Eaton 600 A 15 kV class push-OP Maintenance Instructions

Type VSA12, VSA16 and VSA20/800 maintenance instructions
10MAINTENANCE INSTRUCTIONS MN280064EN October 2017
Brush replacement
1. Remove brush caps and carefully pull old brushes
frommotor.
2. Install new brushes, with cove positioned to cup over
the commutator.
CAUTION
Do not use excessive force when replacing brush holder
caps; excessive tightening may crack the caps.
3. Install brush caps to secure.
Gear reduction unit
The pinion gear at the opposite end of the motor shaft
coupling engages a gear reduction train consisting of a first
and second intermediate gear and the main gear. All gears
are permanently lubricated to provide maintenance- free
operation and prevent corrosion. Oil impregnated bronze
bearings provide long wear life. Inspect all gear teeth and
bearings carefully; disassemble the unit only when part
replacement is necessary.
Electrical components
Electrical circuit components of the operating mechanism
require no maintenance and should provide troublefree
operation. If control circuit malfunction is indicated, check
out the circuitry in the following order:
WARNING
Hazardous voltage. When checking the CT output of
one phase, the output from the other two phases must
be shorted. If the test circuit is energized while there
is no load connected to the CT secondaries, dangerous
voltages will be generated. Contact with high voltage
can cause severe personal injury or death.
T206.1
1. Substitute another electronic control - known to be in
working order. Follow the procedures in the electronic
control service manual to test and repair the control.
2. Check the control cable for breaks or shorts.
3. Check the circuit components in the operating
mechanism.
Sensing current transformer tests
The sensing transformers can be tested using the circuits
shown in Figure 16. Connect all three phases of the recloser
in series across a 100 ampere ac test supply and close the
recloser with the manual closing crank.
Ratio test for sensing-current transformers
Refer to Figure 16, “Ratio Test Circuit (A).”
1. Energize 100 ampere test source.
2. Check current through control cable receptacle sockets
K-G (Phase A), K-H (Phase B) and K-J (Phase C). For
each sensing bushing CT checked, the milliammeter
should indicate 100 milliamperes (mA) (50 mA when
testing 2000:1 ratio CTs) plus or minus ten percent.
3. A 100 mA reading verifies the 1000:1 ratio (a 50 mA
reading verifies the 2000:1 ratio) of each current
transformer. Be sure to allow for tolerances of metering
equipment. De-energize test source and proceed with
polarity test.
Polarity test
Refer to Figure 16, Polarity Test Circuit (B) .
1. Connect sockets G, H and J of the control cable
receptacle in series with jumper leads as indicated in
Figure 17. The jumper leads connect the secondaries of
the current transformers in parallel so that total output
current, measured at points K and J, should be 300
mA, 150mA when testing 2000:1 ratio CTs.
2. Energize the 100 ampere test source. A 300 mA
reading (150mA when testing 2000:1 ratio CTs)
indicates correct polarity for all three sensing
transformers. If the meter across K and J reads only
100 mA (50 mA when testing 2000:1 ratio CTs), the
polarity of one of the transformers is reversed. Check
for uniform location of the polarity marks on all three
transformers; reposition as necessary.
3. De-energize ac test current and remove jumper wires
from receptacle sockets.

Eaton 600 A 15 kV class push-OP Specifications

General

Brand	Eaton
Model	600 A 15 kV class push-OP
Category	Cables and connectors
Language	English