INVERSE 10 x 0.808 0.848 0.767 – Isetting 2 x 120 126 114 IEC – Isetting NORMAL 10 x INVERSE 13.333 13.999 12.666 – Isetting Limits : IEC class 5 + 40 ms RESIDUAL OVER CURRENT (EF4PTOC:3) STEP 1 NEUTRAL PICK UP AND DROP-OFF TEST: Current EF4TOC: 3 [IO>] Setting N Amps Pick Up Drop Off Io> = 0.03 0.05xIn = 0.05 TIMING TEST INJECTED TIME OPERATING TIME CURRENT SETTING N Amps sec 0.05 0.1 Limits: ± 0.5% of set time ± 10 ms RESIDUAL OVER CURRENT (EF4PTOC:3) STEP 2 SENSITIVE EARTH FAULT PICK UP AND DROP-OFF TEST: Current EF4TOC: 3 [IO>>] Setting N Amps Pick Up Drop Off Io>>
INVERSE 10 x Isetting 0.808 0.848 – 0.767 IEC NORMAL INVERSE 2 x Isetting 120 126 – 114 10 x Isetting 13.333 13.999 – 12.666 Limits : IEC class 5 + 40 ms RESIDUAL OVER CURRENT (EF4PTOC:3) STEP 1 NEUTRAL PICK UP AND DROP-OFF TEST: Current Setting Amps Io> EF4TOC: 3 [IO>] N Pick Up Drop Off = 0.03 0.05xIn = 0.05 TIMING TEST INJECTED CURRENT Amps TIME SETTING sec OPERATING TIME N 0.05 0.1 Limits: ± 0.5% of set time ± 10 ms RESIDUAL OVER CURRENT (EF4PTOC:3) STEP 2 SENSITIVE EARTH FAULT PICK UP AND DROP-OFF TEST: Current Setting Amps Io>> EF4TOC: 3 [IO>>] N Pick Up Drop Off
tr_differential_ret670.docx