Earth leakage relais
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Catalog excerpts

Earth leakage relais - 1

ELR EARTH LEAKAGE RELAYS According to IEC/EN 60947-2 Annex M CT TOROIDAL CURRENT TRANSFORMERS RSR AUTO RESTART MOTORS RELAY

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Earth leakage relais - 2

EARTH LEAKAGE RELAYS According to IEC/EN 60947-2 Annex M • NETWORK MONITORING AND PROTECTION The electronic residual current relays allow monitoring and protection of the low voltage distribution network through the use of a toroidal transformer. • CARRYING OUT THE PROTECTION Thanks to the residual current relays it is possible to measure the leakage current to earth. These relays work in conjunction with a separate external toroid. The active conductors that pass through the toroid create a magnetic field proportional to the current flow. Under normal conditions and in the absence of...

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Earth leakage relais - 3

P RPO TETETI TIN N NIS TRTRM E NETS | R O C C O O I N S U U M NTS

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EARTH LEAKAGE RELAYS Compliance to IEC/EN 60947-2 Annex M The features and benefits • ADJUSTING SENSITIVITY AND TRIPPING TIMES The sensitivity I∆n can be set from 0.03 to 30 A while the tripping times from 0 to 5 seconds, thus ensuring flexibility for many applications. If the alarm function is ON, the alarm contact switches when the fault current exceeds 60% of the threshold I∆n selected. • FAIL SAFE The new range of ELR residual current relays allows, through a selector switch, to enable or not the fail safe function. If Fail safe is OFF, the relay activates the shunt-trip once the fault...

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EARTH LEAKAGE RELAYS Technical features COMPARATIVE TABLE Earth Leakage Relay Earth Leakage Relay relË differenziale di terra differenziale di terra relË Earth Leakage Relay Earth Leakage Relay relè differenziale di terra differenziale di terra relè Earth Leakage Relay ELR-4Mo Earth Leakage Relay TRIP MEMORY alarm off tx10 IΔx1 ΙΔx10 FS trip TEST FS alarm alarm alarm on off tx10 tx1 IΔ ΙΔx0,1 x1 ΙΔx10 FS off trip off FS alarm FAIL SAFE FAIL SAFE contrel contrel contrel contrel CONTROL CIRCUIT Toroidal transformer 2 changeovers (both trip) 2 changeovers (1 trip, 1 alarm) Auxiliary voltage...

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EARTH LEAKAGE RELAYS Technical features Earth Leakage Relay relè differenziale di terra ON ALARM TRIP alarm off tx10 IΔx1 ΙΔx10 FS trip FS alarm relè differenziale di terra CONTROL CIRCUIT alarm off tx10 ΙΔx1 ΙΔx10 FS trip FS alarm alarm off tx10 IΔx1 ΙΔx10 FS trip FS alarm relè differenziale di terra / earh leakage relay relè differenziale di terra / earh leakage relay alarm off tx10 ΙΔx1 ΙΔx10 FS trip FS alarm relè differenziale di terra HOLD alarm off tx10 ΙΔx1 ΙΔx10 FS trip FS alarm FAIL SAFE FAIL SAFE alarm off tx10 ΙΔx1 ΙΔx10 FS trip FS alarm FAIL SAFE Earth Leakage Relay relè...

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Earth leakage relais - 7

FAIL SAFE EARTH LEAKAGE RELAYS Technical features relè differenziale di terra / earh leakage relay alarm off tx10 ΙΔx1 ΙΔx10 FS trip FS alarm FAIL SAFE relè differenziale di terra COMPARATIVE TABLE alarm off tx10 ΙΔx1 ΙΔx10 FS trip FS alarm RESET RESET FAIL SAFE INSULATION RESISTANCE FAIL BAFE MAN / AUTO RECOVERY DEBUNCE OFF / ON BAUD RATE STATE TRIP ALARM TEST CURRENT ΙΔn(A) Adjustments tripping set-point (I∆) Adjustments tripping time (t) CONTROL CIRCUIT Toroidal transformer Shunt tripping control AUXILIARY SUPPLY 24 VAC/DC 48 VAC/DC 110 VAC/DC 240-415 VAC 50-60 Hz Contact arrangement 2...

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Earth leakage relais - 8

EARTH LEAKAGE RELAYS Technical features COMPARATIVE TABLE 2 changeovers (both trip) 2 changeovers (both trip) 2 changeovers (1 trip, 1 alarm) 2 changeovers (1 trip, 1 alarm) Auxiliary voltage available (ON) Relay tripping (TRIP) Alarm advance (ALARM) Mechanical flag (TRIP) Flag indicator Flag indicator Shunt tripping circuit CONTROL CIRCUIT Toroidal transformer Adjustments tripping set-point (I∆) 0,03A or 0,1A or 0,3A or 0,5A or 1A Adjustments tripping time (t) Shunt tripping control AUXILIARY SUPPLY Auxiliary voltage (Us) Rated frequency Maximum power consumption OUTPUT RELAYS Contact...

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Earth leakage relais - 9

EARTH LEAKAGE RELAYS Technical features COMPARATIVE TABLE ELRC-BL self-reclosing Earth Leakage Relay Incorporated 35-60-80-110 mm standard diameter 0.025÷25A 2 changeovers (both trip) 2 changeovers (1 trip, 1 alarm) 2 changeovers (1 trip, 1 alarm) 2 changeovers (both trip) Auxiliary voltage available (ON) Relay tripping (TRIP) CONTROL CIRCUIT Toroidal transformer Adjustments tripping set-point (I∆) Adjustments tripping time (t) Shunt tripping control AUXILIARY SUPPLY Auxiliary voltage (Us) Rated frequency Maximum power consumption OUTPUT RELAYS Contact arrangement Rated contact capacity Ith...

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Earth leakage relais - 10

ELR - 7 EARTH LEAKAGE RELAY - FLUSH-MOUNT VERSION DIN 48x48 mm GENERAL CHARACTERISTICS • Earth leakage relay type A • Configurable fail safe operation • Green power LED indicator (ON) • Red relay tripped LED indicator (TRIP) • Front TEST and RESET buttons • Configurable automatic or manual resetting • Flush mount 96x96mm housing with transparent cover • Degree of protection: IP20 terminals, IP40 on front with cover. RATED AUXILIARY SUPPLY VOLTAGE OUTPUTS CONTACTS Configurable tripping set-point (I∆n) ORDER CODE Configurable tripping delay time (t) Built-in filter for 3rd harmonic Tripping...

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Earth leakage relais - 11

ELR - 7 EARTH LEAKAGE RELAY - FLUSH-MOUNT VERSION DIN 48x48 mm TECHNICAL CHARACTERISTICS CONTROL CIRCUIT Toroidal transformer Adjustments tripping set-point (I∆) Adjustments tripping time (t) AUXILIARY SUPPLY Auxiliary voltage (Us) Rated frequency Maximum power consumption OUTPUT RELAYS Contact arrangement Rated contact capacity Ith INDICATIONS Auxiliary voltage available (ON) Relay tripping (TRIP) INSULATION Insulation test AMBIENT OPERATING CONDITIONS Operating temperature Storage temperature Relative humidity ENCLOSURE Version Degree of protection CERTIFICATIONS AND COMPLIANCE Reference...

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Earth leakage relais - 12

ELR-4o | ELR-4mo | ELR-4v | ELR-4mv EARTH LEAKAGE RELAY - FLUSH-MOUNT VERSION DIN 48x96 mm GENERAL CHARACTERISTICS • Earth leakage relay type A • External toroidal • Green power LED indicator (ON) • Red relay tripped LED indicator (TRIP) • Front TEST and RESET buttons • Configurable automatic or manual resetting • Flag indicator (TRIP MEMORY) (ELR-m4o, ELR-m4v only) • Flush mount 48x96mm housing with transparent cover • Degree of protection: IP20 terminals, IP40 on front with cover OUTPUTS CONTACTS Configurable tripping set-point (I∆n) Configurable tripping delay time (t) ORDER CODE RATED...

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