IB 6.2.11.1-2C
Page 18
ABB
other means for reapplying the lubricants listed.
1. Apply NO-OX-ID special grade A grease from
Dearborn Chemical Company to all mating surfaces of
moving current carrying joints. Do not apply NO-OX-ID
grease on any main or arcing contact surfaces.
Primary disconnects should be maintained by
reapplying NO-OX-ID during maintenance periods.
NO-OX-ID is available from ABB in one pint cans, part
number 713222A00.
2. Apply Anderol 757 synthetic grease manufactured by
HULS AMERICA, INC. to mechanism parts, bearings
and pins. Anderol 757 is also to be used on the
external reduction gearing of the spring charging motor.
DO NOT APPLY GREASE TO LATCH OR ROLLER
SURFACES. Anderol 757 is available from ABB in four
ounce tubes, part number 712994A00.
3. Anderol synthetic lubricant is also available as a
spray, Anderol 732. Anderol 732 is useful as a solvent
for removing old lubricant, dirt, and debris in the
mechanism. It can NOT be used as a substitute for
Anderol 757.
4. Use only the recommended lubricants. Use of other
than approved lubricants can cause breaker
misoperation at temperature extremes.
Please observe the following additional warnings:
a. DO NOT apply light machine oil, or thin spray
lubricants to lubricate any mechanism part.
b. DO NOT attempt to relubricate internal components
of the spring charging motor. It is sealed and should not
require repacking. Lubrication should only be applied
to the external reduction gearing per item 2 above.
c. DO NOT lubricate magnetic latch device or otherwise
clean or spray with any substance.
DIELECTRIC WITHSTAND TESTS ON POWER AND
CONTROL CIRCUITS
1. Dielectric withstand tests on circuit breakers may be
made to determine the ability of the insulation to
withstand overvoltages.
2. A 60-cps alternating sinusoidal voltage (rms) value
equal to the specific voltage shall be used. All voltages
used in the dielectric withstand test shall be measured
in accordance with ANSI Measurement of Voltage in
Dielectric Tests, C68.1.
3. Duration Of Test. The dielectric test voltage shall be
applied for a period of 60 seconds. The duration of the
test may be one second if a voltage 30% greater than
that specified is applied.
4. Condition Of Circuit Breaker To Be Tested.
Dielectric tests shall be made on a new, completely
assembled circuit breaker and not on individual parts.
When a circuit breaker is tested in the field or after
storage, the test voltage shall be 75% of the value
listed in ANSI C37.50, 3.5.2 (value shown below).
5. Temperature At Which Tests Are To Be Made.
Dielectric tests shall be made at any temperature
between 10 and 55 °C.
6. Magnitudes And Point Of Application Of Test
Voltage. The dielectric test shall be applied as follows:
a. With circuit sreaker in open position, apply 2200
volts (1000 volts plus twice 600 volts on new breakers;
0.75 x 2200 = 1650V on breakers that have been in
service):
i. Between live parts, including both line and load
terminals, and metal parts that are normally
grounded.
ii. Between !ive terminals and load terminals.
b. With circuit breaker in closed position, apply 2200
volts on new breaker and 1650 volts on breakers that
have been in service:
i. Between live parts and metal parts that are
normally grounded.
ii. Between terminals of different phases.
c. With circuit breaker in either open or closed position,
apply 1500 volts (1125 volts on breakers taken out of
service):
Note: Disconnect solid state trip unit, as a precaution.
i. Between control circuit and metal parts that are
normally grounded. If the circuit breaker control
circuit includes a motor, the motor
MUST
be
disconnected during the dielectric test on the
control circuit.
