Eaton Industrial Switchgear - xCommand xSystem Automation, control & visualization

30 / 253

11/26 Electronic relays
Measuring and monitoring relays
2010 CA08103002Z-EN
EMR
EMRMeasuringandmonitoring relays
EMR5-A300-1-C EMR5-A400-1
Input circuit, measuring circuit L1,L2,L3 L1,L2,L3
Rated control voltage, monitored voltage Us 3 x 160 - 300 V AC 3 x 300 - 500 V AC
Typical current/power consumption 25 mA/10 VA/230 V AC 25 mA/18 VA/400 V AC
Rated control voltage tolerance Us % -15 - +10 -15 - +10
Rated frequency Hz 50/60 50/60
Frequency range Hz 45 - 65 45 - 65
Measuring circuit
Monitoring functions
Phase failure Yes Yes
Phase sequence Yes Yes
Automatic phase sequence correction No No
Asymmetry Yes Yes
Overvoltage/undervoltage No No
Neutral conductor No No
Measuring range
Overvoltage No No
Undervoltage No No
Asymmetry 2 - 25 % of phase voltage mean value
Adjustable threshold values
Overvoltage No No
Undervoltage No No
Imbalance (disconnection value) Adjustable within measuring
range
Adjustable within measuring
range
Hysteresis relative to threshold value
Overvoltage/undervoltage No No
Asymmetry Fixed 20 % Fixed 20 %
Rated frequency of measuring signal Hz 50/60 50/60
Frequency range of measuring signal Hz 45 - 65 45 - 65
Maximum monitoring cycle ms 100 100
Measuring error within rated control voltage
tolerance
Measuring error within temperature range
Measurement method True RMS value measurement True RMS value measurement
Timing circuit
On-delay Ts ms Fixed 200 Fixed 200
Response delay Tv s On-delayed: none = 0;
adjustable 0.1 - 30
On-delayed: none = 0;
adjustable 0.1 - 30
Timeout error within rated control voltage tolerance % ≤ 0.5 ≤ 0.5
Timeout error within temperature range % /°C ≤ 0.06 ≤ 0.06
Repetition accuracy
(constant parameters)
% < ±0.2 < ±0.2
Operating status indication
Relay status R: yellow LED See instructional leaflet See instructional leaflet
Output circuits
Output circuits 15-16/18, 25-26/28 15-16/18, 25-26/28
Output type 2 x 1 relay (changeover contact) 2 x 1 relay (changeover contact)
Operating principle Closed-circuit principle: output relays drop out when value above/
below set threshold value
Contact material AgNi alloy, Cd-free AgNi alloy, Cd-free
Rated operating voltage (VDE 0110, IEC 60947-1) V 250 250
Minimum switching voltage/minimum switching current No 24 V/10 mA 24 V/10 mA
Minimum switching duty V/mA 24/10 24/10
Maximum switching voltage ￫Page 11/21 ￫Page 11/21
Rated operational current (IEC 60947-5-1)
AC12 (resistive) at 230 V A 4 4
AC15 (inductive) at 230 V A 3 3
DC12 (resistive) at 24 V A 4 4
DC13 (inductive) at 24 V A 2 2
Rating data AC (UL 508)
Utilization category (Control Circuit Rating Code) B 300 B 300
Max. rated operational voltage V AC 300 300
Max. thermal uninterrupted current at B 300 A 5 5
Max. input/output rating (N/O / N/C) for B 300 VA 3600/360 3600/360
Mechanical lifespan Operations 30 x 106 30 x 106
Electrical lifespan (AC12, 230 V, 4 A) Operations 0.1 x 106 0.1 x 106