Eaton Industrial Switchgear - xCommand xSystem Automation, control & visualization

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11/30 Electronic relays
Measuring and monitoring relays
2010 CA08103002Z-EN
EMR
Measuringandmonitoring relaysEMR
EMR4-RDC-1-A EMR4-RAC-1-A
Input circuit
Rated control voltage US
power consumption:
A1-B2 24 - 240 V AC/DC - approx. 8 VA / 2 W 24 - 240 V AC/DC - approx. 8 VA / 2 W
Tolerance of rated control voltage US -15 % - +10 % -15 % - +10 %
Rated frequency
AC/DC versions 15 - 400 Hz or DC 15 - 400 Hz or DC
AC versions – 50 - 60 Hz
Duty factor (DF) 100 % 100 %
Measuring circuit L-PE
Monitoring function, insulation monitoring for isolated
AC networks
Isolated DC networks
Measuring range, threshold value setting range min-max. 10 - 110 kΩ 1 - 11 kΩ , 10 - 110 kΩ
Minimum internal resistance – 57 kΩ
Minimum internal AC resistance – 100 kΩ
Internal DC resistance – 100 kΩ
Test resistance – 820
Max. voltage at measuring input 300 V DC 415 V AC
Max. DC measuring voltage 24 - 240 V DC 30 V DC
Max. cable length for clear-test button 10 m
Time delay < 1 s with insulation, < 0.9 x response value Proportional to insulation resistance and
dependent on set threshold value
Operating status indication
Control voltage U: green LED U: green LED
Insulation fault L+: red LED, L-: red LED F: red LED
Output circuits
Output circuits 15-16/18 15-16/18
Output type One changeover contact One changeover contact
Operating principle Open-circuit principle:
Output relays pick up when value above/
below set threshold value
Closed-circuit principle: output relays drop
out when value above/below set threshold
value
Open-circuit principle: Output relays pick up when
value above/below set threshold value
Contact material AgCdO AgCdO
Rated operating voltage
(VDE 0110, IEC 664-1, IEC 60947-1)
250 V 250 V
Maximum switching voltage 400 V AC, 300 V DC 400 V AC, 300 V DC
Rated operational current
(IEC 60947-5-1, EN 60947-5-1)
AC12 (resistive) 230 V 5A 5A
AC15 (inductive) 230 V 3A 3A
DC12 (resistive) 24 V 5A 5A
DC13 (inductive) 24 V 2A 2A
Rated operational data AC (UL 508)
Utilization category (Control Circuit Rating Code) B300 B300
Max. rated operational voltage 300 V AC 300 V AC
Max. thermal uninterrupted current at B 300 5A 5A
Max. input/output rating (N/O / N/C) for B 300 3600/360 VA 3600/360 VA
Mechanical lifespan 30 x 106operations 30 x 106 operations
Electrical lifespan (AC12, 230 V, 4 A) 0.1 x 106 operations 0.1 x 106 operations
Short-circuit rating, max. fuse protection,
N/C / N/O contact
4 A fast/6 A fast 4 A fast/6 A fast