Page 112 - EPR Catalog 2015
P. 112
Three-phase monitoring relays
Technical data
Type CM-MPS.11 CM-MPS.21 CM-MPS.31 CM-MPS.41
Input circuit = Measuring circuit L1, L2, L3, N L1, L2, L3
Rated control supply voltage US = measuring voltage 3x160-300 V AC 3x300-500 V AC
Rated control supply voltage US tolerance 3x90-170 V AC 3x180-280 V AC
2 Rated frequency -15...+10 %
Frequency range
Typical current / power consumption 50/60 Hz 25 mA / 18 VA 25 mA / 10 VA 25 mA / 18 VA
45-65 Hz (230 V AC) (230 V AC) (400 V AC)
25 mA / 10 VA
(115 V AC)
Measuring circuit Phase failure ½ L1, L2, L3, N L1, L2, L3
Monitoring functions ½ ½½
Phase sequence can be switched off
Automatic phase sequence correction - - - -
Over- / undervoltage ½ ½ ½ ½
Phase unbalance ½ ½ ½ ½
Interrupted neutral ½ ½ - -
Measuring range Overvoltage 3x120-170 V AC 3x240-280 V AC 3x220-300 V AC 3x420-500 V AC
3x160-230 V AC 3x300-380 V AC
Undervoltage 3x90-130 V AC 3x180-220 V AC
Phase unbalance 2-25 % of average of phase voltages
Thresholds Overvoltage adjustable within measuring range
Undervoltage adjustable within measuring range
Phase unbalance (switch-off value) adjustable within measuring range
Hysteresis related to the Over- / undervoltage fixed 5 %
threshold value Phase unbalance fixed 20 %
Rated frequency of the measuring signal 50/60 Hz
Frequency range of the measuring signal 45-65 Hz
Maximum measuring cycle time 100 ms
Accuracy within the rated control supply voltage tolerance ͬU ͨ 0.5 %
Accuracy within the temperature range ͬU ͨ 0.06 % / °C
Measuring method True RMS
Timing circuit fixed 200 ms
Start-up delay tS ON- or OFF-delay 0; 0.1-30 s adjustable
Tripping delay tV ͬt ͨ 0.5 %
ͬt ͨ 0.06 % / °C
Accuracy within the rated control supply voltage tolerance Details see function description / -diagrams
Accuracy within the temperature range
Indication of operational states
Output circuits 15-16/18, 25-26/28
Kind of output relay, 1 x 2 c/o contacts
Operating principle closed-circuit principle 1)
Contact material AgNi alloy, Cd free
Rated operational voltage Ue (IEC/EN 60947-1) 250 V
Minimum switching power 24 V / 10 mA
Maximum switching voltage see „Load limit curves“ on page 127
Rated operational current Ie AC-12 (resistive) 230 V 4 A
(IEC/EN 60947-5-1) AC-15 (inductive) 230 V 3 A
DC-12 (resistive) 24 V 4 A
DC-13 (inductive) 24 V 2 A
AC rating (UL 508) Utilization category B 300
(Control Circuit Rating Code)
max. rated operational voltage 300 V AC
max. continuous thermal current at B 300 5 A
max. making/breaking 3600/360 VA
apparent power at B 300
Mechanical lifetime 30 x 106 switching cycles
Electrical lifetime (AC-12, 230 V, 4 A) 0.1 x 106 switching cycles
Max. fuse rating to achieve short-circuit n/c contact 6 A fast-acting
protection n/o contact 10 A fast-acting
1) Closed-circuit principle: Output relay(s) de-energize(s) if measured value exceeds or falls below the adjusted threshold value
2/45 ABB | Catalog Electronic Products and Relays 2015 | 2CDC 110 004 C0210
