ELR-3C
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Catalog excerpts

ELR-3C - 1

ELR-3C EARTH LEAKAGE RELAY - MODULAR VERSION 3 MODULES 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 • Modular DIN housing, 3 module, with transparent cover • Degree of protection: IP20 terminals, IP40 on front with cover ORDER CODE RATED AUXILIARY SUPPLY VOLTAGE OUTPUTS CONTACTS Configurable tripping set-point (I∆n) Configurable tripping delay time (t) Tripping delay time adjustment Fault current to earth adjustment Dip switches settings: 3a -auto reset (A) - man reset (M) auto reset = automatic reset man reset = manual reset through RESET key on the front. For remote resetting, simply shut off the auxiliary supply for about 1 second 3b -tx10 - tx1 constant selection for tripping delay time adjustment. Examples: positioning the dip switch on tx10 and the potentiometer on 0.3 we will have a tripping delay upon exceeding the I∆n threshold of 0.3x10 = 3 seconds; positioning the dip switch on tx1 and the potentiometer on 0.3 we will have a tripping delay upon exceeding the I∆n threshold of 0.3x1 = 0.3 seconds 3c -I∆nx0,1 - I∆nx1 - I∆nx10 constant selection for fault current to earth adjustment. The constants in relation to the position of the 2 dip switches are the following: • dip switch position I∆nx0.1 and I∆nx0.1 K = 0.1 • dip switch position I∆nx1 and I∆nx0.1 K = 1 • dip switch position I∆nx1 and I∆nx10 K = 10 RESET key. To reset the relay after tripping. For remote reset, simply shut off the auxiliary supply for about 1 second. ON LED. Indicates the presence of auxiliary voltage. TEST key. Causes tripping of the relay. TRIP LED. Lighting up indicates the cutting in of

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ELR-3C - 2

ELR-3C EARTH LEAKAGE RELAY - MODULAR VERSION 3 MODULES 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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