TERASAKI AME Series, Инструкция по эксплуатации

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KRB-5200h
-27-
6. PRECAUTIONS ON TEMPERATURE-RISE TEST
When performing a temperature-rise test using a single-phase power supply, set the short
time-delay trip pick-up current (I
2
) to In x 2.5 or more. A temperature-rise test with I
2
set to In x 2
and three poles connected in serial may cause the ACB to trip open.
After completion of the test for which the trip pick-up current setting (I
2
) of the ACB have been
changed, be sure to set the I
2
back to the original value.
7. PRECAUTIONS ON INSULATION RESISTANCE TEST AND
DIELECTRIC WITHSTAND VOLTAGE TEST
7.1 Insulation Resistance Measurement
Use a 500 VDC insulation-resistance tester to check if the insulation resistance is not less than 5 M
Ω
.
Caution : The following terminals must not be subject to the insulation resistance test.

T
1
and T
2
(UVT circuit)

Ka, Kb, Kc, and
l
(OCR test circuit)
7.2 Dielectric Withstand Voltage Test
7.2.1 Main Circuit
The withstand voltage of the main circuit is 2500 VAC for one minute between terminals with
different poles; between ON and OFF terminals; and between main circuit terminals and ground.
Do not subject the ACB main circuit to test conditions that are severer than shown above.
7.2.2 Auxiliary and Control Circuits
Caution : The following terminals must not be subject to the dielectric withstand voltage test.

T
1
and T
2
(UVT circuit)

Ka, Kb, Kc, and
l
(OCR test circuit)
Caution : Do not perform the dielectric withstand voltage test between terminals. The withstand
voltages of auxiliary and control circuits are as follows:

U
1
and U
2
(UVT circuit): 2500 VAC for one minute between terminal
group and ground

S1 and S2 (SHT circuit): 2500 VAC for one minute between terminal
group and ground

Auxiliary/alarm switch circuits: 2500 VAC for one minute between terminal
group and ground

Motor operator circuit: 1500 VAC for one minute between control
terminal group and terminal “E” (ground)