Gossen MetraWatt MAVOLOG 10 Operating instructions

Brand: Gossen MetraWatt

Model: MAVOLOG 10

Category: Measuring, testing & control

Type: Operating instructions

Bedienungsanleitung

Operating Instructions

MAVOLOG 10N/ 10S

Mains Disturbance Analyzer

3-349-062-03

1/06.08

MAVOLOG 10N/S

page 2 GMC-I Gossen-Metrawatt GmbH

MAVOLOG 10N/S

GMC-I Gossen-Metrawatt GmbH page 3

Table of Contents

I First Inspection.................................................................................4

II Safety Precautions...........................................................................4

III Take-Back and environmental compatible Disposal............... 5

1. Technical Description......................................................................6

1.1 Use and Applications..........................................................................6

1.2 Forming of Measuring Quantities.......................................................6

1.2.1 Fundamental Measuring Quantities...................................................6

1.2.2 Calculated Measuring Quantities.......................................................6

1.2.3 Window width (Harmonics Measurement) ........................................6

1.2.4 Observation Period.............................................................................7

1.3 Included Functions .............................................................................7

1.4 Memory Structure...............................................................................8

1.4.1 Memory Modes...................................................................................8

1.4.2 Memory Partitioning............................................................................8

1.5 Memory Types and Memory Space Requirements..........................8

1.5.1 Event Logger.......................................................................................8

1.5.2 Event Statistics ...................................................................................9

1.5.3 Signal Logger (Graphlogger)..............................................................9

1.5.4 Interval Logger (Datalogger)..............................................................9

1.5.5 Daily Statistics...................................................................................10

1.6 RS485 Interface................................................................................11

1.7 Relay Output.....................................................................................11

1.8 Display Functions.............................................................................11

1.9 MAVOLOG 10-Types.......................................................................12

2 Initial Start Up..................................................................................13

2.1 Mechanical Mounting........................................................................13

2.2 Electrical Connection........................................................................13

2.2.1 Measuring Connection .....................................................................13

2.2.2 Auxiliary Supply Connection ............................................................13

2.2.3 Connection to the PC.......................................................................13

2.2.4 Connection to the Modem................................................................14

2.2.5 Bus Connection ................................................................................14

2.2.6 Relay Connection .............................................................................14

3. Configuration of Operating Parameters, Operation..................15

3.1 General Notes...................................................................................15

3.2 Bus Address and Baud-rate.............................................................15

3.3 Memory Configuration Setup ...........................................................15

3.4 Relay Output.....................................................................................15

3.5 Display Setup....................................................................................16

3.6 Preparing a Measuring Run.............................................................16

3.6.1 Transmission of new Device Configuration.....................................16

3.6.2 Starting a Recording.........................................................................16

4 Measuring Quantities, Events and Statistics.............................17

4.1 General Notes...................................................................................17

2.1.1 Voltage Characteristics ....................................................................17

2.1.2 Current Retroactions........................................................................17

4.2 Listing of available Measuring Quantities .......................................18

4.2.1 Voltage Measurement......................................................................18

4.2.2 Current, Power and Energy Measurement......................................18

4.2.3 Harmonics and Flicker Measurement..............................................19

4.3 Voltage Characteristics, Compatibility Levels .................................20

4.4 Statistics Evaluation..........................................................................21

5. Technical Data.................................................................................22

5.1 Applied Regulations and Standards.................................................23

5.2 Standard Configuration.....................................................................24

5.2.1 Common Standard Configuration.....................................................24

5.2.2 Standard Configuration for MAVOLOG 10 L and 10 N...................24

5.2.3 Standard Configuration for MAVOLOG 10 S...................................24

5.3 Scope of Delivery, Accessories........................................................24

6. Dimensions and Electrical Connections.....................................24

7. Maintenance.....................................................................................28

8. Repair and Replacement Parts Service.......................................28

MAVOLOG 10N/S

page 4 GMC-I Gossen-Metrawatt GmbH

I. First Inspection

Check whether instrument and accessories supplied with the

instrument are complete and undamaged just after receipt:

Unpacking

Handle the instrument with the usual care for electronic

instruments.

The transport packing is made of recycling material and

provides for sufficient protection during transport. In case of

repacking use equivalent packing material.

Visual inspection

Compare order code and type code on the packing and/or

instrument with the data on the delivery note.

Ascertain whether accessories are complete.

Check packing, instrument and accessories on eventual

transport damage.

Claims

In case of finding out damages please reclaim at the carrier

without delay (keep packaging). When other defects occur or

in case of repair inform the representative in charge. or apply

to our service department directly (see address on rear

cover).

II Safety Warnings

The MAVOLOG 10N/S is constructed and tested in

compliance with the safety rules of IEC 61010-1/EN 61010-

/-VDE 0411 T1 and meets protection class I. When properly

used, the safety of both the user and the instrument is

assured. It is not assured, however, if the instrument is

misused or carelessly handled.

To maintain the safe and proper condition of the instrument

and to assure its safe operation, it is absolutely necessary to

carefully and completely read these operating instructions

before using the instrument. These instructions must be

followed in all respects.

WARNING!.

An instruction note, a practical application etc. with this notice

must be kept in order to maintain the safety protection of the

instrument and avoid insurances of persons.

ATTENTION!

An instruction note, a practical application etc. with this notice

must be kept in order to avoid damage of the instrument and

to maintain correct operation.

WARNING 1

The instrument must only be operated by persons who

understand the danger of shock hazards and know how to

apply safety precautions.

Shock hazards exist wherever voltages of more than 30V

(TRMS) can appear.

WARNING 2

When making installations or measurements where shock

hazards exist, avoid from working alone. In this case a

second person must be present.

WARNING 3

The maximal permissible potential between current / voltage

inputs and ground is when connected to circuits of

- overvoltage category II 600V

III 300V

WARNING 4

Do not exceed the permissible overload limits of the

measuring inputs. The maximum permissible overload is:

- of the voltage inputs each 600V

- of the current inputs each 7A

- of the auxiliary inputs U

36VDC

WARNING 5

The instrument must not be used on circuits with corona

discharge (high voltage).

MAVOLOG 10N/S

GMC-I Gossen-Metrawatt GmbH page 5

WARNING 6

Be particularly careful when measuring on HF circuits.

Dangerous composite voltages may exist there.

WARNING 7

Take into account that unexpected high voltages can occur

on devices under test conditions (e.g. defective instruments)

Capacitors may be charged to a dangerously high voltage, for

instance.

WARNING 8

Measurements under moist environmental conditions are not

permitted.

WARNING 9

Verify that the test leads are in proper condition, e.g no

cracked insulation, no open circuits in the leads or

connectors.

WARNING 10

When it must be assumed that safe operation of the

instrument is no longer possible, take the device out of

service and secure it against unintentional and accidental

use.

It is assumed that safe operation is no longer possible,

• when the instrument shows obvious signs of damage,

• when the instrument does not longer function correctly,

• after prolonged storage under adverse conditions,

• after severe transport stress.

WARNING 11

When opening the instrument, live parts may be exposed.

Therefore, the instrument must be disconnected from the

measuring circuit prior to opening the housing for repair,

replacement of parts or recalibration. If repair or recalibration

cannot be avoided unless the instrument is opend and live,

this work must be carried out only by a quailfied person who

understands the danger involved.

III Take-Back and environmental compatible

Disposal

According to WEEE ordinance as well as to national

regulations based on that, the

MFT 6040 is a device of category 9

(monitoring and test instruments). This

category is not contained in the RoHS-

guidelines.

According to WEEE 2002/96/EC, the

devices are marked with the crossed-

out wheeled bin after

DIN EN 50419 illustrated on the right.

This symbol indicates collection separated from private

households waste.

Concerning take-back of waste electrical and electronic

equipment please contact our service and/or your

contractual partner.

MAVOLOG 10N/S

page 6 GMC-I Gossen-Metrawatt GmbH

1. Technical Description

1.1 Use and Applications

The three phase mains disturbance analyzers

MAVOLOG 10N/ 10S were preferably designed for recording

exceedings of given limits and compatibility levels of the

characteristics of three phase electricity supplies at any load

(event detector). Simultaneously it permits for recording the

r.m.s values of the available measuring quantities in

selectable time sequence (interval recorder function). With its

additional current inputs the type MAVOLOG 10S provides for

measuring and recording the quantities in the fields of current

distortion and power demand for power clearing.

The applications cover the wide field of recording power line

fluctuations, power quality parameters and parameters for

energy consumption.

In the application field „testing of voltage characteristics of

electrical power supply“ (power quality) the test duration

extends to several days or weeks. In addition some

characteristics have to be measured in several sites of a

supply area. Therefore the MAVOLOG 10N/S is designed for

mounting on panel or hat rail.

1.2. Forming of Measuring Quantities

1.2.1 Fundamental Measuring Quantities

Forming of measuring quantities follows the standardized

representation after DIN 40110-1 94:

dtv

∫

T: period length

V: signal waveform

V: effective value of voltage

Corresponding applies to the current I.

Voltage signal waveform (v) is sampled with a frequency of

12,8 kHz, digitalized and squared. For exact time stamp

detection, two consecutive samples are matched, so that the

difference in propagation time is compensated. By a digital

low pass filter the integration is carried out at the fundamental

frequency of 35 Hz. The output value of the digital filter is

determined every 10 ms. The square root of it represents the

effective value in a 10 msec interval, which is used for all

subsequent measuring value formations.

1.2.1 Calculated Measuring Quantities

RMS Value

The measuring interval for the RMS value is 1 second, which

is 50 periods at 50 Hz.

10- Second mean value

From the instantaneous values recorded continuously and

haplessly, the r.m.s value is calculated over every 10

seconds time interval.

10-Minute-Mean-Value

The measuring interval for the 10-minutes-mean value is 10

minutes, which is 30000 periods at 50 Hz.

Collective Power

For the instantaneous value of the collective power (three

phase power) applies according to DIN 40110-2 96:

∑∑∑

===

ivivtPtP

)()(

μμ

For the three-phase system the „collective quantities” are

determined according to DIN 40110-2 96 as follows:

∑

and

∑

From that definition the collective apparent power is defined:

ΣΣΣ

IVS

Interval Energy

For calculating the interval energy and as a result from that

the power demand, the every 15 minutes energy

consumption is cumulated and recorded. Other measuring

periods agreed between utility and consumer (e.g. 30

minutes).can be derived via the software METRAwin for

MAVOLOG 10 und PC.doc-ACCESS (see separate scope of

delivery).

Note: Synchronisation to the periodical sync pulse is not

possible in the actual version of the MAVOLOG 10.

1.2.3 Window Width (harmonics measurement)

For harmonic measurements, the FFT is calculated over a

window width of 8 fundamental periods at synchronous

scanning every 3 seconds. The measurement is planned for

quasi-stationary harmonics.

Further references see standard EN 61000-4-7: 1994-08

and IEC 61557-12

MAVOLOG 10N/S

GMC-I Gossen-Metrawatt GmbH page 7

1.2.4 Observation Period

The basic observation period is a day interval (24 hour

interval). It starts at 00:00 o'clock and stops the same day at

24:00 o'clock. Further periods required for statistics purpose

(e.g. a week period for evaluations after EN 50160) are

calculated via software METRAwin 10 for MAVOLOG.

Corresponding to the actual memory set-up all intervals can

be stored, including partial intervals.

Note: Beginning and end of the observation period are

selected after transfer of the measuring data to the PC. In this

way, the data can be used for evaluation of different national

and international normative standards.

1.3 Included Functions

Measuring

The voltage and current signals are sampled quasi

simultaneously at a frequency of 6,4 kHz.

The four voltage inputs UL1, UL2, UL3 and N are connected

straight to the low voltage mains. A separated terminal serves

for connecting the protective earth. The standard instrument

supports the voltage measuring ranges 100V and 400V.

For the current inputs (MAVOLOG 10S) the measuring

ranges 5A and 1A are available. The adaption to the line

current is made via appropriate current transformers X/1A or

X/5A (in exceptions clip on current transformers with current

output can be used).

Voltage and current ratios can be adjusted via the software

METRAwin 10 for MAVOLOG 10.

Calculating

The basic measuring quantities can be calculated from the

sampled values. From this the derived measuring quantities

are calculated and represented as r.m.s values, maximum

values, minimum values and average values.

Display Mode

Up to 10 measuring quantities can be displayed successively

on the integrated display (MAVOLOG 10N und 10S).

Recording

The relevant measuring data can be recorded in the internal

memory. The memory organisation permits recording of

interval data, events and statistics data simultaneously in

separated memory sections.

Communication

The incorporated data interface (RS485) in combination with

the PC-software METRAwin 10 for MAVOLOG 10 (see

separated scope of delivery) allows for configuring the device

and uploading the stored data to the PC.

Monitoring

Events can be signalled via the programmable alarm output

(relay contact) performing as common alarm.

MAVOLOG 10N/S

page 8 GMC-I Gossen-Metrawatt GmbH

1.4 Memory Structure

1.4.1 Memory Operating Modes

The internal flash memory incorporates a storage capacity of

640K Byte (320K words) in 10 sectors each having a capacity

of 32K words. Two memory operation modes are available:

- RING Mode (first-in-first-out): With the storage capacity fully

used the in each case oldest data stored in a 32 k words

sector are erased and then overwritten by the actual ones

(push-up storage). Exception see chapters 1.5.2 event

statistics.

- STOP Mode: (write protection mode): The stored data are

maintained when data flow exceeds the stooge capacity. In

this case, the stored data must be erased via external

information available via the software METRAwin 10 for

Mavolog 10. Exception see 1.5.5 daily statistics.

1.4.2 Memory Partitioning

The storage can be configured as event logger, signal logger

and interval logger. Following partitioning at following

combinations are possible (specifications in words):

(1) 320K event logger

(2) 320K event / signal logger

(3) 320K interval logger

(4) 160K interval- + 160k event logger

(5) 160K interval- + 160k event / signal logger

For simultaneous measuring up to 40 measuring quantities

(data points) can be selected from the total number being

available. Selection is made via the software METRAwin 10

for MAVOLOG 10.

Note: The simultaneous operation in ring mode and stop mode

is possible. For sample, in configuration (4) the event logger

can be operated in stop mode whereas the interval logger

runs in ring mode. The configuration is selected via the

software METRAwin 10 for MAVOLOG 10.

1.5 Memory types and Memory Space Requirements

1.5.1 Event Logger

Events are defined as fluctuations of single measuring values

exceeding given limits or compatibility levels, which occur at

not predictable time.

For the voltage characteristics limits or compatibility levels are

defined in the emc standards ( see 4.3 „characteristics of

voltage, compatibility levels). The measuring value calculated

in the DSP (digital signal processor) according to standard

requirements (10sec-mean value, instantaneous value,

10min-mean value) is compared with the given limits. An

exceeding releases a recording automatically.

The alphanumeric recording comprises following

information’s:

- Start date and time (hh:mm:ss,xxx)

- Phase, in which the event occurred

- Type of distortion (characteristics)

- Exceeding value (minimum, maximum)

Each event requires 6 words memory space. Recording of

500 events in a weekly interval requires a memory capacity

of 3k words. When operated as event storage sufficient

memory capacity for 53.000 is available.

Note 1: When events are recorded according to standard,

e.g. EN 50160, the memory space requirement is small. For

this main application the memory size was designed.

Note 2: The event storage is the basis for each further data

analysis. It incorporates all informations required for further

statistics evaluations. The data transferred to the PC via the

software METRAwin 10 for MAVOLOG 10 provides for further

evaluation according to different standard requirements. For

instance it is possible to collate a distortion statistics

according to EN 50160 (weekly statistics) as well as to

industrial standards (daily, monthly or yearly statistics).

Note 3: Transients cannot be recorded. However, conclusions

are possible when the limit exceeding (10ms event) was

recorded as a graph in the signal logger function.

Interharmonic voltages are not calculated at present.

MAVOLOG 10N/S

GMC-I Gossen-Metrawatt GmbH page 9

1.5.2 Event Statistics

Event statistics logger is a separated part of the event logger.

In this fix programmed memory partition all the events leading

to a quantitative states are collected. To it belong quantity

and duration of events, such as quantity of voltage dips,

voltage drops, frequency deviations, auxiliary voltage drops,

as well as total duration of occurred events.

Note: The event statistics remain stored even if the event

logger runs in ring mode. Erase of recorded information is

only available by manual reset.

1.5.3 Event / Signal Logger (Graphlogger)

In this function the progress of the 10 ms effective values of

voltage and current dependent on the time is recorded when

exceeding a given limit.

For each event the duration of the record is limited to 2

seconds. Accordingly a recorded event comprises 200

measuring points, additionally 6 words are required for the

descriptions of the event (begin date and time, type of event,

end date and time). The trigger position is fixed with 25%

(post trigger) so that 25% prehistory and 75% post history are

recorded.

The recorded progress of the 10 ms mean values can be

transferred to the PC via the software METRAwin 10 for

MAVOLOG 10. Analysis can be performed graphically or in

alphanumeric way.

With the selected memory configuration 320K event / signal

storage more than 1500 events can be recorded as signal

form and alphanumeric.

Events occurring during or shortly after actual recording of

an event are ignored as long as the standby state (armed

position) is released again automatically. It may happen that

for alphanumeric recordings a time progressive recording

does not exist when the event occurred shortly after the

previous event.

Note 1: The signal storage provides for analysing the signal

progress of voltage and current in the fixed resolution of 10

ms. It does not allow for recording the signal shape in

sample rate resolution of 6,4 kHz. Acquisition of transients

is not possible in the actual version.

Note 2: For practical applications the memory configuration

160K interval logger + 160K event / signal logger is

recommended. In this configuration provides for recording of

more than 760 events in graphical and alphanumerical

mode.

Note 3: The signal storage can only be enabled in

combination with the event storage.

1.5.4 Interval Logger (Data logger)

A measuring run incorporates the lot of all measuring points

of a measurement recorded with the same parameters and in

constant time intervals (storage interval).

The measuring values are recorded in successive order in

time intervals of 1 / 10 seconds, 1 / 5 / 10 / 15 minutes and 1

or 24 hours

). It performs unaffected from events which

cannot be predicted. The recorded rms value corresponds to

the value which occurred next to the end of the interval.

The record of a measuring run is started via the software

METRAwin 10 for MAVOLOG 10. Measuring points recorded

previous to the start of the new measuring run were erased

via the software.

The measuring values recorded in each time interval are

dependent from the selected or given measuring type:

• Effective values (norm) are recorded with the detected value

next to the end of each time interval.

• Extreme values (Maxima/maX; Minima/miN) are recorded by

current comparison of the actual measuring value and the

last extreme value detected within in the current time

interval. The extreme values of the current time interval are

recorded just before ending the interval and opening the

next one.

• Mean values (avG) are defined as arithmetic mean value

formed over the current time interval. They were recorded

just before ending the current interval and opening the next

one.

).1 / 10 seconds and 5 minutes available from firmware version 2.00

Each data point recorded at a defined time requires one word

of memory space. Therefore the memory space requirement

for 40 data points is 40 words per measuring point.

Additionally a head line is generated for every start and stop

of recording, as well as for an auxiliary energy drop. It

requires 7 words memory space.

Example: Measurement with 40 data points

Storage interval 10 minutes

Measuring duration 1 week

Total memory space requirement:

40 x 7 x 24 x 6 = 40.320 words.

Storage interval (meas. points per hour)

Day interval (hours)

Measuring time interval (days)

Quantity of data points (meas. quantities)

Additionally a head line of 7 words is required.

When operated as 10-minutes interval logger according to EN

50160 this provides for recording of 40 data points

simultaneously for a time duration of 7,9 weeks.

Note 1: For continuous, uninterrupted recording, the time

interval must be matched to the measuring interval. For 10

minutes mean values records according to EN 50160 the

interval must be set to 10 minutes. Synchronisation of interval

and measuring start time is set automatically.

Note 2: Datapoints with the measuring interval deviating from

the storage interval are recorded with the measuring value

detected next to the end of the storage interval (e.g.

instantaneous values or maxima and minima in 10 minutes-

interval)

MAVOLOG 10N/S

page 10 GMC-I Gossen-Metrawatt GmbH

1.5.5 Daily Statistics

The daily statistics is generated for the last completed day.

The values recorded provide for gaining a representative

overview over the daily progress of the events and measuring

values named below:

• Extreme values not exceeding given limits or compatibility

levels. A selection of 95% of the recorded values and / or

time intervals represent the daily value:

- Phase undervoltage – daily value

- Phase overvoltage – daily value

- Neutral overvoltage – daily value

- Voltage unbalance – daily value

- Flicker – daily value

- Extreme value for each harmonic

• Daily quantity of

- Voltage drops

- Voltage dips

• Daily extreme value of

- Current per phase (MAVOLOG 10 S)

- Active, reactive and apparent power (collective)

• Energy consumption

- Active and reactive energy consumption since last reset

e.g. 60 days for 20 measuring quantities in

intervals of 10 minutes and > 660 events with

representation of voltage progress of event

phase

e.g. 36 days for 40 measuring quantities in

intervals of 10 minutesand > 27.000 events

over 500 events for each phase, together with the

10 ms effective values of the voltage progress

over a time duration of 2 seconds.

58.000 events together with date, time, type of

event, phase and measuring value

e.g. 61 days for 40 measuring quantities in

intervals of 15 minutes

50% event + signal data50% interval data

50% event data50% interval data

100% event + signal data

100% event data

100% interval data

event statistics data

daily statistics data

Memory CapacityFlexible Memory Configuration

RING or STOP mode separate for each memory type

e.g. 60 days for 20 measuring quantities in

intervals of 10 minutes and > 660 events with

representation of voltage progress of event

phase

e.g. 36 days for 40 measuring quantities in

intervals of 10 minutesand > 27.000 events

over 500 events for each phase, together with the

10 ms effective values of the voltage progress

over a time duration of 2 seconds.

58.000 events together with date, time, type of

event, phase and measuring value

e.g. 61 days for 40 measuring quantities in

intervals of 15 minutes

50% event + signal data50% interval data

50% event data50% interval data

100% event + signal data

100% event data

100% interval data

event statistics data

daily statistics data

Memory CapacityFlexible Memory Configuration

RING or STOP mode separate for each memory type

MAVOLOG 10N/S

GMC-I Gossen-Metrawatt GmbH page 11

1.6 Communication Interface RS 485

The incorporated interface RS 485 provides for data

communication and device configuration. For applications

that require several measurement points, the devices are

meshed over the RS485 field bus. Up to 32 devices of

different configuration can be connected to a bus.

At bigger plants, several buses are installed and summarized

in workstations. For bigger areas local workstations can be

installed and mashed together via a second network (e.g.

Ethernet LAN). This easy to service installation guarantees

the clarity and a secure handling.

Note: When using a standard host computer, usually no

RS485 communication interface is available. Therefore, the

communication between MAVOLOG 10N / 10S and computer

is performed via the interface converter MAVOLOG PS/C

contained in the delivery program. Furthermore the PS/C

serves for auxiliary supply of at max. 5 devices of different

configuration.

1.7 Relay Output

The built-in relay serves for signalling of limits or compatibility

level exceedings. The potential free relay contact is working

as common alarm. After detection of a limit exceeding the

relay is activated. Signalling mode and relay contact mode

can be set up via the software METRAwin 10 for MAVOLOG

Relay contact mode opener (NC = normally closed)

closer (NO = normally opened)

Signalling mode OFF no signalling

TIME signalling duration

programmable

EXT signalling reset external

(via PC software)

Due to the common alarm definition all exceedings of limits

and compatibility levels act commonly. The first event that

occurred sets the alarm condition without delay. Further

alarms are ignored until the relay falls back into the standby

mode. A selective signalling of alarm conditions assigned to

different measurement quantities is not possible.

In the TIME alarm mode, the alarm announcement time can

be adjusted between 2 and 65335 seconds. After this time,

the relay resets to standby position without external actions.

Note: Before detecting an alarm condition all monitored

measuring quantities must be within the preset tolerances.

Even the shortest alarm condition (e.g. voltage dip of 10 ms)

is signalled, however, with the time delay of some 100

milliseconds which is typical for the relay.

1.8 Display Functions

Display of measuring quantities and values

Up to 10 measuring quantities can be monitored on the

display (one line, 12 characters) in successive order.

Quantities can be selected via the software METRAwin 10 for

MAVOLOG 10 in the menu setup/device/set LCD.

With a click on the key the display changes from a monitored

quantity to the next.

Display recording

The blinking pointer left of the displayed measuring quantity

indicates the recording mode. With the field clear no data are

recorded, the storage is stopped.

flashing when recording is activated

Display of measuring parameters

When pressing the key the measuring parameters are

monitored in successive order. Among other parameters

program version, selected baud rate, bus adress and serial

number can be displayed.

flashing when recording is activated

MAVOLOG 10N/S

page 12 GMC-I Gossen-Metrawatt GmbH

1.9 MAVOLOG-Types

MAVOLOG 10N

MAVOLOG 10S

The version MAVOLOG 10N without current inputs was

designed for voltage quality testing and additionally serves as

voltage recorder. With the incorporated LCD display it serves

for monitoring of measured values on site. Over a key click, at

maximum 10 programmable measurement quantities can be

selected and displayed on the LCD display. If the key remains

pressed, the programmed measurement parameters appear

in successive order.

The measured values are recorded to the internal storage

together with the relevant evaluations. Via the built-in relay,

exceedings of limits and compatibility levels are signalled.

Programming and data transfer are carried out via the

software METRAwin 10 for MAVOLOG.

The MAVOLOG 10S with included current inputs represents

a universally applicable mains analyzer. It is used equally for

the registration of the process of essential measuring

quantities in the power line (current/voltage/power recorder),

for testing the characteristics of the mains voltage (voltage

quality) and for energy recording in corporation with the

software METRAwin 10 for MAVOLOG.

In the respects to other functions, the MAVOLOG 10S

corresponds to the type MAVOLOG 10N

MAVOLOG 10N/S

GMC-I Gossen-Metrawatt GmbH page 13

2. Setting into Operation

WARNING! Setting into operation works are to be carried out

with the connecting cables being voltage free. Before works

on the device, the measuring inputs must be disconnected

from the mains!

2.1 Mechanical Mounting

The case is designed as wall mounting housing. Fitting is

made with the aid of a snap in foot (see scope of delivery) on

a hat rail TS35 according to DIN EN 50022 or directly onto a

panel.

For dismantling, the latch (snap-in foot) is to be released with

a suitable tool (screwdriver):

2.2 Electrical Connections

The instrument is connected to the measuring circuits via the

screw terminals on top and bottom side of the case. They are

suitable for commercially available connecting cables, control

cables or measuring lines with a cross section of 1 mm

Note: For fitting the cables a 3mm screwdriver must be used.

In order to protect the front panel from damage please use

the screwdriver included in the scope of supply. For their

widening just above the jack common used screwdrivers do

not fit into the guide hole and might damage the front panel.

Strip the isolation at the cable ends such that the cables can

be tight fitted to the clamping screws. On the other hand live

parts must not be accessible (e.g. voltage connections).

Note: Prior to works on the device exceeding normal

operating such as paging with the key disconnect the device

from the measuring and auxiliary supply connections.

2.2.1 Measuring Connections

The measuring connections are made via the terminals on

the front panel designated as voltage and current terminals

suitable for a cross section up to 2,5 mm

. Make certain that

the neutral conductor is really connected to the neutral

conductor of the mains! Otherwise an exceeding of the

neutral voltage is monitored.

2.2.2 Auxiliary Supply

The nominal value of the auxiliary supply is 24 V AC or DC.

For that a power unit is necessary with secure el.

separation. The power supply unit MAVOLOG PS/C (ID.Nr.:

Z863D) with integrated and galvanic separated interface

RS485/RS232 (half duplex) meets these requirements.

When AC supplied the lower potential must be connected to

the minus terminal. When operation more devices take care

on a through connection ( - always on – etc.).

2.2.3 Connection to the PC

The PC connection is made via the RS485- bus terminals A

and B, and further via the Power supply / Interface converter

MAVOLOG PS/C available as separate accessory.

Wall Mounting

Mountin

on Hat Rail

MAVOLOG 10N/S

page 14 GMC-I Gossen-Metrawatt GmbH

2.2.4 Connection to a modem

For data communication via modem the connection is set up

via the PC with the connecting software installed and a

modem connected to the PC. On MAVOLOG 10 site a

second modem is installed between telephone line and

interface converter PCS/C. The MAVOLOG 10 modem has

to be set up before connecting it up. When setting it up the

baud rate and the “auto answer” function are configured. A

detailed description can be found in the manual for

METRAwin 10 and PC.doc-ACCESS for MAVOLOG 10.

2.2.5 Bus Connection

All MAVOLOG 10 and the interface converter MAVOLOG

PS/C are linked via the RS485 field bus in 2-wire technique

(twisted pair). Take care on correct connection (A always

connected to A, B always connected to B); otherwise the

device might get damaged. The maximum bus extension is

approx. 1200m. When using bus repeaters a considerable

larger distance is possible.

2.2.6 Relay Connection

The relay is connected via the corresponding relay

terminals. The potential free contact serves for signalling of

the alarm conditions. Pay attention to the maximum ratings

of the relay contact which are 50 V / 0,5 A!

MAVOLOG 10N/S

GMC-I Gossen-Metrawatt GmbH page 15

3. Configuration of Operating Parameters, Operating

3.1 General Notes

• The configuration of all parameters (iratio, uratio, type of

mains, Measuring quantities, measuring range, memory

configuration, alarm relay allocation, etc.) is performed via

the software. A detailed description can be found in the

users manual METRAwin 10 and PC.doc-ACCESS for

MAVOLOG 10.

• The key serves for changing the displayed measuring

quantity. After a klick the in successive order next

measuring quantity is displayed.

• When the key remains pressed for a longer time than 3 s,

the programmed measurement parameters are displayed

in successive order (MAVOLOG 10 N/S).

• The measured data are recorded in the internal memory

corresponding to the selected memory configuration. They

can be transferred to the PC via the RS485 interface and

the interface converter at any time. Therefore, a

permanent connection to the calculator or a corresponding

alarm unit is required only for the online signalling of an

event over the alarm output.

• An initialisation routine is started after activation of

auxiliary supply. Therefore the measurement parameters

appear only after some seconds on devices with LCD

display .

3.2 Bus Address and Baud Rate

Ex works the devices are set up to address 2 and baud rate

19200. Each device working in a bus system has its individual

address. Before integration in the bus system the devices are

to be reconfigured as follows:

• Read-in the device to be reconfigured onto the monitor of

the PC via the menu Setup/device/search/read in. If

necessary, the communication parameters com. port (com

1 or com 2), baud rate (9200) and adress (2) are to be

reset.

• With a click on OK in the window “set device adress” the

new allocated adress is send to the device.

• The same way the baud rate is set up in the menu baud

rate/set baud rate to the baud rate used in the bus system.

Here too the new allocation is sent to the device after the

click to yes.

• After reconfiguration of the before mentioned parameters

the device can be linked to the bus system.

Note: Within a bus system the baud rate is the same for all

devices. Further instructions can be found in the manual

METRAwin 10 and PC.doc-ACCESS for MAVOLOG 10.

3.3 Memory Configuration set up

The setup of the memory configuration requires several

steps in the software menu set up/device/memory. It covers

the set up of the memory mode and of the memory type. A

more detailed description can be found in the user manual

METRAwin 10 and PC.doc-ACCESS for MAVOLOG 10

Memory operating mode

The memory can be operated in stop-mode and in ring-

mode. This memory functions can be operated

simultaneously. For sample, the event logger can be

operated in stop mode whereas the interval logger runs in

ring mode.

Memory partitioning

The memory capacity can be partitioned in 5 different ways

to the storage functions event logger, signal logger and

interval logger. For detailed information see chapter 1.4

„memory structure“ and 1.5 „memory types and memory

space requirements”.

Data Point List

The data point list includes the measuring quantities and

evaluations which are recorded corresponding to the

memory function event logger, signal logger and interval

logger.

The data points are available as instant values (norm),

maximum value, (max), minimum value (min) and as mean

value over the selected measuring interval. Up to 40 data

point can be recorded simultaneously.

Note 1: The software METRAwin 10 for MAVOLOG 10

includes a list of predefined data points. More information

can be found in the users manual METRAwin 10 and

PC.doc-ACCESS for MAVOLOG 10.

Note 2: A configuration selected once remains unchanged

even if the data in the memory are erased. On the contrary

the memory contents is erased automatically when memory

configuration is changed.

MAVOLOG 10N/S

page 16 GMC-I Gossen-Metrawatt GmbH

3.4 Relay Output

The relay function is programmed in two steps in the software

menu set up /device/relay:

Relay contact

The relay contact can be defined as opener (NC) or as closer

(NO).

Signalling Mode

When selected the signalling mode OFF the relay is not

active.

In the signalling mode TIME the signalling duration can be set

between 1 and 65536 seconds. At the end of the delay time

the signalling is cancelled automatically.

In the signalling mode EXT the signalling duration is

unlimited. The signalling has to be reset via the software.

A detailed description can be found in the users manual

METRAwin 10 and PC.doc-ACCESS for MAVOLOG 10.

3.5 Display Setup

The selection of the displayed measuring quantity is done via

the software METRAwin 10 for MAVOLOG 10 in the menu

set up/device/set LCD.

Recording enabled is indicated via the flashing pointer in the

left field of the display.

With the key pressed the device configuration can be

displayed on the LCD at any time during operation.

3.6 Preparing a Measuring Run

According to standard requirements, the duration of a

measuring run has to cover a week (EN 50160); for stationary

quality investigations an unlimited duration has to be

considered. The available memory functions allow to erase

the measuring data partial. This is possible for the memory

functions statistics, maxima/minima and energy meter.

Before starting a new measuring run it is to make sure that all

recorded measuring data are erased. The operating steps for

total memory clearance and partial memory clearance can be

found in the manual METRAwin 10 and PC.doc-ACCESS

for MAVOLOG 10.

Note: Make sure whether event statistics data are needed

for long term evaluation or shall be erased.

3.6.1 Transmission of new Device Configuration

For transmitting the device configuration, for uploading the

stored data to the PC and for the online function „display

measuring quantities” the device has to logged in to the PC:

• Select the desired device via the device adress.

• Read-in the device to the monitor via the menu set

up/device/search/read in (software METRAwin 10 for

MAVOLOG 10).

• Check the device configuration before starting a

measuring run via the corresponding menus of the

software:

- Bus adress

- Baud rate

- Memory mode ((endstop- or ring mode)

- Memory type (event-, signal-, Interval storage)

- List of data points

- Measurement type (instantaneous-, min/max- , average value)

- Recording interval (for power quality 10 minutes)

- Relay contact

- Signalling mode

- time / date

- Display functions

• Read-in to the device possibly required changes or the

complete device configuration via the menu send to

device.

Note: The baud rate can be set up via the menu set up/baud

rate/new baud rate for all devices linked in a bus system

simultaneously.

ATTENTION! After transmission of the new configuration and

clearing the memory a possibly activated recording is

stopped.

3.6.2 Starting a Recording

• Read-in the device via the relevant device adress.

• Start a new recording after checking the device

configuration via the menu device/memory mode/start in

the software METRAwin 10 for MAVOLOG 10.

MAVOLOG 10N/S

GMC-I Gossen-Metrawatt GmbH page 17

4. Available Measuring Quantities and Evaluations

4.1 General Note

The MAVOLOG 10 allows to combine up to 40 measuring

quantities and measuring types according to actual

requirements. The selection is done via the software

METRAwin 10 for MAVOLOG 10 in the menu device/set

up/dp list. Thus for the same quantity the measuring types

instantaneous value, maximum, minimum and mean value

can be selected for simultaneous recording.

The close interaction between electric utility and power

consumer is reflected in volume and complexity of the

international and national standards as well as of the EU

guidelines. In addition to recording instantaneous values and

mean values, characteristics of voltage fluctuations and

current retroactivities are calculated and compared with the

compatibility levels described in the standards for

electromagnetic compatibility (EN 50160, IEC 61000- ff/EN

61000- ff, NRS 048 etc.).

The considerable accumulation of data requires an efficient

use of the available memory capacity. In order to meet the

standard requirements only measuring data and derived

evaluations exceeding given limits and compatibility levels

are recorded. This phenomenon designated as events, are at

disposal qualitatively (begin time, end time, calculated value,

type of event) and quantitatively (number of exceedings).

An access corresponding to the standards includes

quantitative values such as event type, number and duration

(total number and duration of exceedings) only. Within the

bounds of power quality characteristics are defined permitting

a statistical evaluation over specified time duration (day,

week, year).

4.1.1 Voltage Characteristics

For the conforming to standards evaluation of voltage

fluctuations, in particular in public supply networks, the

progress of the r.m.s voltage is observed permanently and

uninterrupted and evaluated according to the criteria

described in the relevant standards. According to the random

shaped character of voltage fluctuations statistical and

probability theoretical evaluating methods are applied. A

detailed description can be found in chapter 4.3.

4.1.2 Current Retroactions

The evaluation follows the guidelines for quasi-stationary and

slowly fluctuating harmonic currents according to IEC 1000-4-

7 and EN 61000-4-7 respectively. After this a continuous but

not uninterrupted measuring sequence is required.

In intervals of 3 seconds, probes are taken for every phase

and every rms value of the harmonic current. The

corresponding data are filed in the storage in case of the

assessed value exceeds the compatibility level

MAVOLOG 10N/S

page 18 GMC-I Gossen-Metrawatt GmbH

4.2 Available Measuring Quantities and Evaluations

Legend:

) 10 ms-effective value (basic values according 1.2.1)

) 1-second instantaneous value in the selected recording interval 1/1o seconds, 1 / 5 / 10 / 15 minutes or 1 / 24 hours

) Daily maximum and daily minimum of the 10 minutes mean values

) Total number of exceedings of given compatibility levels in the recording interval

) 1-second effective value (instantaneous value); window width for harmonics: 8 periods

) The Plt-value is calculated from 12 successive Pst-values according to EN 61000-4-15, this is an observation time of 2 hours

4.2.1 Voltage Measurement

measuring type

measuring quantity designation unit.

effective value

)

instant. value

)

maximum

)

minimum

)

10-sec-mean value

10-min-mean value

daily maximum

)

daily minimum

)

energy meter

event counter

)

Phase-neutral-voltage U1N, U2N, U3N V

• • • •

• • •

•

Phase-phase-voltage U12, U23, U32 V

• • • •

• • •

•

Neutral-earth-voltage in the 4-wire mains UNPE V

• • • •

•

Collective voltage

UΣ

• • • •

Voltage unbalance Uu %

•

Mains frequency f Hz

•

Interruption of auxiliary supply -

•

4.2.2 Current-, Power- and Energy measurement (MAVOLOG 10S)

measuring type

measuring quantity designation unit

effective value

)

instant. value

)

maximum

)

minimum

)

10-sec-mean value

10-min-meanvalue

daily maximum

)

daily minimum

)

energy meter

event counter

)

Phase current I1, I2, I3 A

• •

• • •

•

Neutral current IN A

• •

• • •

•

Active power per phase P1, P2, P3 W

• •

•

Active power, collective

PΣ

• •

•

Reactive power, collective

QΣ

Var

• •

•

Apparent power, collective

SΣ

• •

•

Active energy, collective, consumption and delivery

+WPΣ, -WPΣ

• •

Reactive energy, collective

WQΣ

varh

• •

Apparent energy, collective

SQΣ

Vah

• •

Power factor, collective

PFΣ

•

MAVOLOG 10N/S

GMC-I Gossen-Metrawatt GmbH page 19

4.2.3 Harmonics and Flicker measurement (option)

measuring type

measuring quantity according to EN 50160 designation unit

effective value

)

instant value

)

maximum

)

minimum

)

10-sek-mean value

10-min-mean value

daily maximum

)

daily minimum

)

energy meter

event counter

)

Fundamental harmonic voltage U1H01, U2H01,U3H01 %

• • •

•

Voltage harmonics from 2

-to 40

order U1H02 ... U1H40

U2H02 ... U2H40

U3H03 ... U3H40

• • •

•

Total harmonics distortion THD-U per phase U1THD, U2THD, U3THD %

• •

•

Short term flicker severity Pst U1Pst, U2Pst, U3Pst -

•

Long term flicker severity Plt U1Plt, U2Plt, U3Plt - 6)

harmonics measurement for current retroactions (MAVOLOG 10S)

Fundamental harmonic current I1H01, I2H01,I3H01 A

• • •

• •

•

Current harmonics from 2

-to 40

order I1H02 ... I1H40

I2H02 ... I2H40

I3H03 ... I3H40

• • •

• •

•

Total harmonics distortion THD-I per phase I1THD, I2THD, I3THD %

• • •

• •

•

MAVOLOG 10N/S

page 20 GMC-I Gossen-Metrawatt GmbH

4.3 Voltage Characteristics, Compatibility Levels

For the MAVOLOG 10 the following voltage characteristics with the following value- and time limits are defined as events:

Overvoltage: from 10 ms with begin time, end time or duration of the event and value of overvoltage per phase

• Trigger function:

Voltage: ≥ 110% Un (voltage tolerance selectable)

Time : from 10 ms duration with begin time, end time, duration of event per phase

Voltage dip: from 10 ms with begin time, end time or duration of the event and dip value per phase

• Trigger function according to EN 50160:

Voltage: ≤ 90% of nominal value

Duration: 10 ms to 3 seconds record of time duration

From 3 seconds record of end time

• Trigger function according to NRS 048:

Voltage: ≤ 90% Un ≤ 10% of nominal voltage in categories of dip value

Duration: 10 ms to 3 seconds in categories of dip value

dip value duration

Y 10% - 20% 20ms – 3000ms

X 20% - 60% 20ms – 150ms

S 20% - 60% 150ms – 600ms

T 60% - 100% 20ms – 600ms

Z 20% - 100% 600ms – 3000ms

Table: Categories of voltage dips according to NRS 048

Voltage unbalance: 10-minutes mean value

• Trigger function:

Voltage unbalance > 3%

Voltage drop: from 10 ms with begin time, end time or duration of voltage drop per phase

• Trigger function according to EN 50160:

Voltage: ≤ 1% of nominal voltage

Duration: 10 ms to 3 seconds record of time duration

From 3 seconds record of end time

• Trigger function according to NRS 048:

Voltage: ≤ 10% of nominal voltage

Duration: 10 ms to 3 seconds record of time duration

From 3 seconds record of end time

Harmonics: 10-minutes mean value with date, time, per phase for each harmonic

• Trigger function: Table according to EN 50160

THD 10-minutes mean value with date, time, per phase and number of exceedings

• Trigger function: > 8%

Long-term flicker Plt: 2-hours mean value (cubic calculation)

• Trigger function: > 1

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Gossen MetraWatt MAVOLOG 10 Operating instructions

Brand: Gossen MetraWatt

Model: MAVOLOG 10

Category: Measuring, testing & control

Type: Operating instructions

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Gossen MetraWatt MAVOLOG 10 Operating instructions

Gossen MetraWatt MAVOLOG 10 Operating instructions

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