Eaton Digitrip 3000 series - Page 80

Instruction Leaflet DT3000
Page 76 Effective: Date 07/02 I.B. 17555D
For more information visit: www.cutler-hammer.eaton.com
Supersedes I.B. 17555C dated November 1999
drop across the Digitrip 3000 current input during the
test. Check the value against the “No Vac, 1 Phase I”
curve, the highest curve, of Figure B-8.
7. Apply ac control voltage again, with Phase C current
still applied, or reapply it. The voltage drop shown on
the multi-meter should decrease to the value for the
“With Vac, 1 Phase I” curve of Figure B-8. With ac
power applied, this voltage will be roughly half of the
value without the ac power applied.
Fig. B-6 Digitrip 3010/3020 Protective Relay Burden Curves - OHMS
Total Burden,
w
ith Vac, 3 Phase I
Total Burden, No
V
ac, 3 Phase I
Total Burden, with
V
ac, 1 Phase I
Total Burden, No
V
ac, 1 Phase I
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