Eaton Industrial Switchgear - xCommand xSystem Automation, control & visualization

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11/22 Electronic relays
Measuring and monitoring relays
2010 CA08103002Z-EN
EMR
Measuringandmonitoring relaysEMRTechnical data
EMR4-I1-1-A EMR4-I15-1-A EMR4-I15-1-B
Input circuit, power supply circuit A1-A2
Rated control voltage US - power consumption:
A1-A2 24 - 240 V AC/DC 24 - 240 V AC/DC 220 - 240 V AC
Tolerance of rated control voltage US -15 - +10 % -15 - +10 % -15 - +10 %
Rated frequency
AC versions 50/60 Hz 50/60 Hz 50/60 Hz
AC/DC versions 50/60 Hz or DC 50/60 Hz or DC 50/60 Hz or DC
Current/power consumption
24 V DC 30 mA/0.75 W 30 mA/0.75 W
115 V AC 24 mA/2.6 VA 24 mA/2.6 VA
230 V AC 11 mA/2.6 VA 11 mA/2.6 VA 12 mA/2.6 VA
Duty factor (DF) 100 % 100 % 100 %
Mains failure buffering 20 ms 20 ms 20 ms
Transient overvoltage protection Varistors Varistors Varistors
Input circuit measuring circuit B1/B2/B3-C
Monitoring functions Overcurrent or
undercurrent monitoring
can be configured
Overcurrent or
undercurrent monitoring
can be configured
Overcurrent and
undercurrent monitoring
Measurement method True RMS value measurement, any curve shapes
Measuring inputs
Terminal assignment B1 - C – – –
Measurement ranges AC/DC 3 - 30 mA 0.3 - 1.5 A 0.3 - 1.5 A
Input resistance 3.3 Ω 0.05 Ω 0.05 Ω
Pulse overload capacity t < 1 s 500 mA 15 A 15 A
Long-term overload 50 mA 2 A 2 A
Measuring inputs
Terminal assignment B2 - C – –
Measurement ranges AC/DC 10 - 100 mA 1 - 5 A 1 - 5 A
Input resistance 1 Ω 0.01 Ω 0.01 Ω
Pulse overload capacity t < 1 s 1 A 50 A 50 A
Long-term overload 150 mA 7 A 7 A
Measuring inputs
Terminal assignment B3 - C 0.1 - 1 A 3 - 15 A 3 - 15 A
Measurement ranges AC/DC 0.1 Ω 0.0025 Ω 0.0025 Ω
Input resistance 10 A 100 A 100 A
Pulse overload capacity t < 1 s 1.5 A 17 A 17 A
Long-term overload – – –
Threshold value(s) Adjustable within specified measuring range
Threshold value setting accuracy 0.1 0.1 0.1
Repetition accuracy (constant parameters) ±0.07 % of full-scale value ±0.07 % of full-scale value ±0.07 % of full-scale value
Hysteresis relative to threshold value 3 - 30 % adjustable 3 - 30 % adjustable 3 - 30 % adjustable
Frequency range of measuring signal DC/15 Hz - 2 kHz DC/15 Hz - 2 kHz DC/15 Hz - 2 kHz
Rated frequency range of measuring signal DC/50 - 60 Hz DC/50 - 60 Hz DC/50 - 60 Hz
Maximum response time AC: 80 ms/DC: 120 ms AC: 80 ms/DC: 120 ms AC: 80 ms/DC: 120 ms
Measuring error within control voltage tolerance ≤ 0.5 % ≤ 0.5 % ≤ 0.5 %
Measuring error within temperature range ≤ 0.06 %/°C ≤ 0.06 %/°C ≤ 0.06 %/°C
Timing circuits
Release delay Tv 0 or 0.1 - 30 s adjustable 0 or 0.1 - 30 s adjustable 0 or 0.1 - 30 s adjustable
Repetition accuracy (constant parameters) None ±0.07 % of full-scale value ±0.07 % of full-scale value
Time error within control voltage tolerance ≤ 0.5 % ≤ 0.5 % ≤ 0.5 %
Timeout error within temperature range ≤ 0.06 %/°C ≤ 0.06 %/°C ≤ 0.06 %/°C
Operating status indication
Control voltage U/T: green LED Continuous light: control voltage present; slow flashing: trip delay Tv active
Measured value I: red LED Continuous light: overcurrent; slow flashing: undercurrent
Relay status R: yellow LED Continuous light: relay picked up, no storage
Slow flashing: duty factor long: relay picked up, active storage
Slow flashing: duty factor short: relay dropped out, active storage
Output circuits 11(15) - 12(16)/14(18), 21(25) -
22(26)/24(28) - relays
11(15) - 12(16)/14(18), 21(25) -
22(26)/24(28) - relays
11(15) - 12(16)/14(18), 21(25) -
22(26)/24(28) - relays
Output type Two changeover contacts Two changeover contacts Two changeover contacts
Operating principle Open-circuit principle: Output relays pick up when actual value exceeds or is below set
threshold value.