3UG5618-2CR20 Siemens Under Voltage Relay

The preferred successor type Siemens Under Voltage Relay is 3UG5618-2CR20 phase sequence phase failure 3×160-690 V spring digital monitoring relay for 3-phase supply voltage automatic phase sequence correction phase failure 3 x 160 to 690 V 50 to 60 Hz AC undervoltage and overvoltage 160-690 V hysteresis 1-20 V OFF delay 0-20 s asymmetry 0-20% 1 CO for phase correction 1 CO for power system faults spring-loaded connection system

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Specifications of 3UG5618-2CR20 digital monitoring relay

 

product function Phase monitoring relay
display version LED No
design of the display LCD
insulation voltage for overvoltage category III according to IEC 60664
● with degree of pollution 3 rated value 690 V
degree of pollution 3
type of voltage
● for monitoring AC
● of the control supply voltage AC
surge voltage resistance rated value 6 kV
protection class IP IP20
shock resistance according to IEC 60068-2-27 sinusoidal half-wave 15g / 11 ms
vibration resistance according to IEC 60068-2-6 1 … 6 Hz: 15 mm, 6 … 500 Hz: 2g
mechanical service life (switching cycles) typical 10 000 000
electrical endurance (switching cycles) at AC-15 at 230 V typical 100 000
thermal current of the switching element with contacts maximum 5 A
reference code according to IEC 81346-2 K
relative repeat accuracy 1 %
Substance Prohibitance (Date) 05/01/2012
Product Function
product function
● undervoltage detection Yes
● overvoltage detection Yes
● phase sequence recognition Yes
● phase failure detection Yes
● asymmetry detection Yes
● overvoltage detection 3 phase Yes
● undervoltage detection 3 phases Yes
● voltage window recognition 3 phase Yes
● adjustable open/closed-circuit current principle No
● auto-RESET Yes
Control circuit/ Control
control supply voltage at AC
● at 50 Hz rated value 160 … 690 V
● at 60 Hz rated value 160 … 690 V
operating range factor control supply voltage rated value at AC at 50 Hz
● initial value 1
● full-scale value 1
operating range factor control supply voltage rated value at AC at 60 Hz
● initial value 1
● full-scale value 1
Measuring circuit
measurable voltage at AC 690 … 160 V
adjustable response delay time
● with lower or upper limit violation 0.1 … 20 s
accuracy of digital display +/-1 digit
Precision
relative metering precision 5 %
Auxiliary circuit
number of NC contacts delayed switching 0
number of NO contacts delayed switching 0
number of CO contacts delayed switching 2
operating frequency with 3RT2 contactor maximum 5 000 1/h
Main circuit
number of poles for main current circuit 3
ampacity of the output relay at AC-15
● at 250 V at 50/60 Hz 3 A
● at 400 V at 50/60 Hz 3 A
ampacity of the output relay at DC-13
● at 24 V 1 A
● at 125 V 0.2 A
● at 250 V 0.1 A
operational current at 17 V minimum 5 mA
continuous current of the DIAZED fuse link of the output relay 4 A
Electromagnetic compatibility
conducted interference
● due to burst according to IEC 61000-4-4 2 kV
● due to conductor-earth surge according to IEC 61000-4-5 2 kV
● due to conductor-conductor surge according to IEC 61000-4-5 1 kV
field-based interference according to IEC 61000-4-3 10 V/m
electrostatic discharge according to IEC 61000-4-2 6 kV contact discharge / 8 kV air discharge

Dimension of 3UG5618-2CR20 digital monitoring relay