FläktGroup eQ Three phase asynchronous motor Installation guide

Brand: FläktGroup

Model: eQ Three phase asynchronous motor

Type: Installation guide

FläktGroup eQ Three phase asynchronous motor is a high-quality motor designed for continuous operation in ambient temperatures of up to 40 °C and altitudes below 1000 meters. It is equipped with permanently lubricated bearings, which have a lifespan of 32,000 - 45,000 hours for 4-pole motors and 16,000 - 26,000 hours for 2-pole motors at an ambient temperature of 25 °C. The motor is also equipped with a thermal and short circuit protection device, which helps to prevent damage to the motor in the event of a power surge or overload.

The FläktGroup eQ Three phase asynchronous motor is a versatile motor that can be used in a variety of applications, including:

FläktGroup DC_9126GB 20180202_R0 Specifications are subject to alteration without notice

The external surface of the motor should be kept clean and the

ventilation inlets should not be blocked.

Intermittent and abnormal noise and vibrations are not accept-

able and the motor should be shut off. The bearing temperature

shall not exceed 95 °C.

INSTALLATION OF SEPARATELY SUPPLIED

FREQUENCY INVERTER

CAPACITIES IN EXCESS OF 22 KW

If the capacity exceeds 22 kW, a symmetrically shielded cable

with concentric or in some other way symmetrically designed

protective earth conductor should be used. For recommenda-

tions governing these installations we refer to the installation

instructions for the frequency inverter.

INPUT POWER {MAINS) CABLE, FUSES AND CIRCUIT

BREAKERS

A four conductor cable (three phases and earth/protective

earth) is recommended for the input power cabling. Shielding is

not necessary. Dimension the cables and fuses in accordance

with the input current. Always pay attention to local codes when

sizing the cables and fuses.

The input power connectors are at the bottom of the drive. lnput

power cable routing must be done so that the distance from the

sides of the drive is at least 20 cm to avoid excessive radiation

to the input power cable. In the case of shielded cable, twist the

cable shield wires together into a bundle (pigtail) not longer than

five times its width and connect to the PE terminal of the drive (or

PE terminal of input filter, if present).

GENERAL

FläktGroup Standard Three phase asynchronous motor can be

delivered in different models (manufacturers).

Regardless of the models the delivered motor always fulfils

the specification given from the product selection software ACON.

The motor and fan are balanced from factory.

The motor is designed for continuous operation in ambient

temperature 40 °C and altitudes below 1000 meters. The casing

of the motor can be hot when touching during normal service

even after shut off.

INSTALLATION

The motor shall be earthed according to valid regulations.

Voltage tolerance is +/- 10 %. When the phase-sequence is

L1, L2, L3 the direction of rotation is clockwise viewed from the

driving end. The direction of rotation will be reversed if

the phase-sequence is altered.

The connecting terminal block is equipped with metric knock-

outs. Not used holes must be sealed. The cable gland must have

same IP-class as the terminal block and fit the cable diameter.

Generally, a thermal and short circuit protection device should

be mounted in the motors power supply. If the motor is equipped

with a thermistor it should be used.

The instruction for connection of the thermistor is in the terminal

block.

Warning!

If the frequency inverter is not installed

correctly, this may damage the motor bearings.

FläktGroup’s policy stipulates that we agree

to accept guarantee liability only if the motor

and frequency inverter have been supplied

and installed by us.

Guarantee liability will not be accepted by

FläktGroup if the motor has been connected/

wired to a frequency inverter by another fitter,

i.e. one who is not employed by or commis-

sioned by FläktGroup.

FLÄKTGROUP

ASYNCHRONOUS MOTOR

INSTALLATION AND MAINTENANCE INSTRUCTION

FLÄKTGROUP ASYNCHRONOUS MOTOR

Installation and maintenance instructions

FläktGroup DC_9126GB 20180202_R0 Specifications are subject to alteration without notice

MOTOR CABLING INSTRUKTIONS

Keep individual unshielded wires between the cable clamps and

the screw terminals as short as possible. Route control cables

away from power cables.

The figure below shows the recommended conductor layout.

Allowed

A separate Pe conductor is required if the conductivity of the cable

shield is < 50 % of the conductivity of the phase conductor.

Allowed for motor cables with phase conductor cross section up to

10 mm2.

Recommended

Symmetrical shielded cable: three-phase conductors and a concentric or

otherwise symmetrically constructed PE conductor and a shield

Not allowed for motor cables

A four-conductor system: three-phase conductors and protective

conductor, without a shield.

conductor

and shield

Shield

SUPPLY CABLE MOTOR CABLE

As short unshielded

wires as possible

Short pigtail

Unpainted gland plate

Cable shielding

covered with

conductive tape

Conductive shielding

and compression seal EMC cable gland

Clamping nut

Cable

Continuity of

Faraday cage

GROUNDING PRINCIPLES OF CABLES

At the motor end, the motor cable shield must be grounded

360 degree with an EMC cable gland.

Control cable

min. 200 mm

min. 300 mm

Input power cable Motor cable

The figure below shows an example of correct wiring.

Safety switches or terminals mounted between the frequency

converter and the motor is not recommended.

FLÄKTGROUP ASYNCHRONOUS MOTOR

Installation and maintenance instructions

FläktGroup DC_9126GB 20180202_R0 Specifications are subject to alteration without notice

EFFECTIVE MOTOR CABLE SHIELDS

The general rule for cable shield effectiveness is: the better and

tighter the shield, the lower the radiated emission level. The

figure below shows an example of an effective construction (for

example Ölflex-Servo-FD 780 CP, Lapp Kabel or MCCMK, Draka

NK Cables).

Insulation jacket Inner insulator L2

L3 L1

Braided metallic shield

Galvanised steel or tinned copper wire with braided shield.

Layer of copper tape with concentric layer of copper wire.

Concentric layer of copper wire.

MAINTANANCE

Inspect the motor regularly and keep it clean. Especially impor-

tant is to keep the ventilation inlets clean.

If the motor protection is activated: The cause of the malfunction

must be investigated and corrected before starting the motor

again; motor failure, temporary overload or wrong set values in

the protection device.

BEARINGS

Most fans and motors are equipped with permanently lubricated

bearings. As a guideline the following lifetimes can be expected

at an ambient temperature of 25 °C.

32 000 – 45 000 1) h for 4-pole motors

16 000 – 26 000 h 1) for 2-pole motors

The shorter times for bigger sizes (IEC 180 or bigger)

1) The interval is dependent of the speed of the motor.

If the bearings are overheated or deteriorated the bearing must

be exchanged or, if possible, the crease be renewed. If the

grease is to be renewed: Remove the old grease and clean with

gasoline. Fill half of the empty volume of the bearing with lithium

based grease.

Type of bearing is to be found on the marking on the motor.

While dismantling the motor, the rotor can be removed either

from driving or non-driving end. While the rotor is taken out care

should be taken to avoid damage of the rotor.

If motor need rewinding, please contact manufacturer for correct

winding data.

FläktGroup eQ Three phase asynchronous motor Installation guide

Brand: FläktGroup

Model: eQ Three phase asynchronous motor

Type: Installation guide

The FläktGroup eQ Three phase asynchronous motor is a versatile motor that can be used in a variety of applications, including:

Download PDF

report

FläktGroup eQ Three phase asynchronous motor Installation guide

FläktGroup eQ Three phase asynchronous motor Installation guide

Related papers

Other documents