Front Frame Description - Legrand Ime Rd4B Manuel D'utilisation

Differential relays

Front Frame Description

IDn intervention threhold
Test push-button
Reset push-button
Test no trip test push button + reset push button
6
Green LED's "On" = fed meter
(presence of extra supply voltage)
Dt (s) intervention time
*
Yellow LED's "20-30-40-50%" = IDn instantaneous value
Red LED's "Trip / Fail" = alarm intervention /ring transformer -
0,03...0,3A
Range selector x1 / x10 / x100
L.50% - L.2 function selector
Function L.2 = alarm with double exchange relay output
Function L.50% = alarm + pre-alarm 50% of selected IDn
Man - ut reset selector
Man = Manual
ut = Automatic
Nd - Ne state of output relay selector
Nd = (normally -de-energized) negative security
Ne = (normally energized) positive security
*
(in percentage of IDn value)
earth leakage relay connection breakdown
0,3...3A 3...30A
LE12569AA_E 10/20 - 01IM cod.RD4B21.B
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