ABB Voltage monitoring relays CM-ESS Technical Data
Technical data
Data at Ta = 25 °C and rated values, unless otherwise indicated
Input circuits
Supply circuit A1-A2
Rated control supply voltage U
Rated control supply voltage Us tolerance -15...+10 %
Rated frequency 50/60 Hz 50/60 Hz or DC
Typical current / power consumption 24 V DC - - 30 mA / 0.75 W
Power failure buffering time 20 ms
Transient overvoltage protection varistors
Measuring circuit B-C
Monitoring function over- or undervoltage monitoring configurable
Measuring method TRMS measuring principle
Measuring inputs terminal connection B-C
Threshold value adjustable within the indicated measuring range
Tolerance of the adjusted threshold value 10 % of the range end value
Hysteresis related to the threshold value 3-30 % adjustable
Measuring signal frequency range DC / 15 Hz - 2 kHz
Rated measuring signal frequency range DC / 50-60 Hz
Maximum response time AC 80 ms
Accuracy within the rated control supply voltage tolerance
Accuracy within the temperature range
Transient overvoltage protection varistors
s
115 V AC 24 mA / 2.6 VA - 17 mA / 1.9 VA
230 V AC - 12 mA / 2.6 VA 11 mA / 2.6 VA
measuring range
input resistance 600 kΩ
pulse overload capacity t < 1 s 800 V
continuous capacity 660 V
110-130 V AC 220-240 V AC 24-240 V AC/DC
3-30 V, 6-60 V, 30-300 V, 60-600 V
DC 120 ms
ΔU ≤ 0.5 %
ΔU ≤ 0.06 % / °C
Timing circuit
Time delay T
Repeat accuracy (constant parameters) ±0.07 % of full scale
Tolerance of the adjusted time delay -
Accuracy within the rated control supply voltage tolerance -
Accuracy within the temperature range -
V
none
User interface
Indication of operational states
Control supply voltage U/T: green LED
Measured value U: red LED
V: control supply voltage applied
V: overvoltage
W: undervoltage
Relay status R: yellow LED
V: output relay energized, no latching function
6 - Voltage monitoring relays CM-ESS.1 | Data sheet
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