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Rishabh ELPR Smart+ Earth Leakage Protection Relay (Smart+)

Rishabh ELPR Smart+ Earth Leakage Protection Relay (Smart+)

Brand
Rishabh
Model number
ELPR Smart+

DIN-rail earth leakage relay with CBCT input: In 30 mA - 30 A and trip delay 0 - 10 s set by potentiometer, CBCT open detection, bar graph LEDs; DIP switches for auto re-closure, fail-safe or alarm relay and main relay configuration.

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Key features

  • Leakage current set by front potentiometer: 30 mA, 100 mA, 300 mA, 500 mA, 1 A, 3 A, 5 A, 10 A, 20 A or 30 A
  • Trip delay set by potentiometer: 0, 0.06, 0.15, 0.25, 0.5, 0.8, 1, 2.5, 5 or 10 s (0 = instantaneous)
  • CBCT connection fault detection (PON LED blinks)
  • DIP switches: auto re-closure (3 reset attempts) or manual reset, relay 2 as fail-safe or alarm relay, main relay energized or de-energized
  • True RMS, Type A earth leakage relay (up to 15th harmonic)
  • Bar graph LEDs show leakage at 30%, 45%, 60% and 75% of set In
  • Test and reset keys plus remote reset contacts
  • Wide auxiliary supply: 20 - 60 V DC / 20 - 40 V AC or 60 - 300 V AC/DC
  • DIN-rail mount 2U flame retardant housing
  • Applications: motor protection, mining equipment, industrial and substation premises

Specifications

Input
Leakage current (In)30 mA to 30 A (Type A), via CBCT
Tripping operating range80% to 100% of In
Alarm operating range> 50% of In
Reset hysteresis15% of trigger value
Power on / reset delayApprox. 1 s
Auxiliary supply
OptionsL: 20 - 60 V DC / 20 - 40 V AC; M: 60 - 300 V AC/DC
Frequency45 to 66 Hz
Burden< 4 VA approx.
Accuracy
Leakage current5% of full scale
Trip delay5% of set trip time or 50 ms, whichever is greater
Instantaneous trip< 25 ms for leakage current greater than 5 x set In (not for 30 A range)
Relay contacts
Relay 1 (ELR)1 NO + 1 NC (1 CO), energized / de-energized by DIP switch
Relay 21 NO, alarm or fail-safe by DIP switch
Rating5 A / 250 V AC or 30 V DC
Mechanical endurance1 x 10^7 operations
Electrical endurance5 x 10^4 operations (resistive load)
Remote reset
OperationNon potential free (approx. 12 V DC), isolated contacts for remote resetting
Standards
ComplianceIEC 61326-1:2012, IEC 60947-2 Annex M, IEC 61010-1-2001; IEC 60755 optional
Installation categoryIII 300 V
High voltage test2.2 kV AC, 50 Hz for 1 minute
General
Operating temperature-20 to +65 °C
Storage temperature-40 to +70 °C
Relative humidity0 - 90% non condensing
EnclosureIP40 front face, IP20 terminals
Housing dimensions90 x 65 x 35 mm as per DIN 43880
Weight125 g approx.
Ordering
Order codeELR2-[L/M]-AR (L: 20 - 60 V DC / 20 - 40 V AC, M: 60 - 300 V AC/DC aux.)

Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.

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