2. Vemer
  3. PSR400

Vemer PSR400 User manual

  • Hello! I'm a chat assistant that has read the user manual for the Vemer PSR phase control relay. This document contains valuable information about the device’s functions, including control of voltage asymmetry and phase sequence, adjustable sensitivity, and other features. I am ready to answer your questions about the device based on the information contained in this manual.
  • What is the power supply for the device?
    What is the output of the relay?
    What is the sensitivity of the device?
V3IS00200-031
Mod. PSR
User Manual
PHASE CONTROL RELAY
Read all the instructions carefully
 ThephasesequencerelayPSR is an electronic command device in a standardised
2-module DINcontainer,tocontrolvoltage-asymmetryandphase-sequenceinthree-
phasesystems.
SAFETY WARNINGS
During the installation and operation of the instrument, proceed in accordance with the
instructions below:
1) The instrument should be installed by a competent operator following the
installation diagrams carefully
2) The instrument should be installed in a panel from which no access can be gained to
the terminals after installation
3) Do not power or connect the instrument if any part of it is damaged
4) The electrical system of the building in which the instrument is to be installed
should have a switch and a protective device against over-currents
5) The instrument is designed for installations with over-voltage category III and
pollution level 2, in accordance with the EN 61010-1 standard
Code Model Description
VP807200 PSR Phase-controlrelay
TECHNICAL SPECIFICATIONS
• Powersupply:
400 V
~ 50 Hz
• Absorption:4VA(3W)
• Terminals:6mm2block
• Output:
 –relaywithcontactinexchange8A/250V~
–maximumswitchablepower2000VAcos =1
• Sensitivity:70%÷95%ofratedvalue
• Interventiontime:2s
• Resettime:2s
• Hysteresisonreset:2%
• Signalling:RedLEDrelayintervention
• Operatingtemperature:–5°C÷+50°C
• Storagetemperature:–10°C÷+70°C
• Humidity:20%÷90%non-condensing-
• Insulation:powersupplyandcommandcircuitsgalvanicallyisolatedfromeachotherat
reinforcedinsulationlevelinaccordancewiththeEN61010standard
• Container:2DINmodules,colourRAL-7035
• Containermaterial:self-extinguishinginclassV0inaccordancewiththeUL-94standard
• Degreeofprotection:IP20/IP40whencorrectlyinstalledinanelectricalpanel
USE
• Applicationsineverycasewhereitisessentialtoadheretothephasesequenceupon
wiringortopreventsignicantoscillationsofthepowersupplyvoltageinnetwork.
• Therelaydetectstheexactphasesequenceinthree-phasesystemsandvoltageunbalance
causedbythereductionorabsenceofaphase.
OPERATION
• Theoutputrelayisexcited(
“Relay ON”
ledon)onlyifallthreephasesarepresent
andtheirsequencecorrespondstothesealontheinputterminals(seethe
“Operating
diagram 1”
).
• Whenoperative,theoutputrelaydropsout(
“Relay ON”
ledoff)ifthesequenceofthe
phasesisaltered,ifaphaseisabsentorifthevoltageunbalanceofthephasesexceedsthe
calibrationvalue(seethe
“Operating Diagram 1 and 2”
).
• Thesensitivityoftherelayisadjustablebymeansofthe
“ASYMMETRY (%)”
trimmer
onthefrontofthedevice,from95%to70%oftheratedvalue,tosetitduringinstallation
fortheunbalancevalueofthenetworkvoltagethatmaybetoleratedbytheunitorsystem
tobeprotected(seethe
“Operating diagram 2”
).
• Toavoidundesirableinterventionsbythedeviceinthepresenceofslightvoltage
unbalance,werecommendstartingtheadjustmentsfromthemaximumasymmetry
(70%ofUn).
• Theresetisautomaticwhenthenormalpowersupplyconditionsarerestoredorwhenthe
sequence error is corrected.
• Afteraninterventionduetophaseasymmetry,theresethasahysteresiswhichmakesit
possibletore-excitetheoutputrelaywhenthevoltagevaluereturnsaboveacertainxed
leveloftheThresholdofAsymmetry(seethe
“Operating Diagram 2”
).
RIFERENCE STANDARDS
ConformitytotheEUdirectives:
2006/95/EC(LowVoltage)
89/336/EECmodiedby92/31/EECand93/68/EEC(EMC)
isdeclaredwithreferencetothefollowingharmonisedstandards:
Safety:
EN61010-1
Electromagnetic compatibility:
EN61000-6-2,EN61000-6-4
Dimension
Connection diagram
Operating diagram 1
36 60
45
65
88
ON
Relay
PSR
Asymmetry
(%)
L2
L1
1
2
3
4
5
6
7
8
8A / 250 V ca
L3
Operating diagram 2
Relay
Un
HYSTERESIS
ASYMMETRY THRESHOLD %
Relay
/