Siemens RL, Инструкция по эксплуатации

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Maintenance
Table 3 Inspection and Maintenance Intervals
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Inspection Interval
Overhaul
Maintenance & Lubrication Interval
All Type RL Breakers Interval
Frame
'
Size
Check & Exercise RL built
I
RL built
A m p eres
Tripping System before 6/91
I
All Type
!
6/91 or later RL Breakers
(Number of operations
i
I
(with "LM" in (Number of
Check
&
Exercise
or time. whichever
I
type designation) operations)
I
Circuit Breaker Mechanism occurs first)
I
I
800 Annually 1750 operations/1 year
I
5 years
12500 operations
1600
I
Annually
I
500 operations/1 year 5 years
4000 operations i
2000 Annually
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500 operations/1 year
5 years 4000 operations
3200
Annually 250 operations/ 1 year
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5 years
1500 operations
4000 Annually
250 operations/ 1 year
5 years 1500 operations
( 1) A �y
circuit breaker which has interrupted a heavy fault current should
be
inspected accordi,-,g to the recommenced procedure for maintenance and lubrication.
•
"LM" indica:cs Low Maintenance RL Breaker produced beginning June,
1991.
Type
635V
SIEMENS
LM
508V
Serial No.
i
'-------·
254V Control Voltage kA Symm.
lnst.
-----'-------:---- Motor
S�ort Time Close
Brkr. W/D
I
Trip
WID
Fr. Size
:------ ------l
L-··-···-·····
----:
::
:
·Date
/
-
······· - ----�
Sensor Ratings:
Current Sensors
Grd. Senso;s (when used);
i
lnst Book
I
SG
3068
Siemer,s Enetgy & A;.;t:x:oatio�.
Inc
.•
Raleign, NC Made
in
U.S
A
4. Rotate the racking screw to the TEST position (ap­
proximately 3 turns) to ciear the spring discharge inter­
lock before attempting to charge closing springs.
Exercise the circuit breaker through several close-open
cycles. For electrically operated circuit breakers,
operate the circuit breaker electrically. (Refer to the
specific wiring information for your circuit breaker to
determine where control voltage signals should be ap­
plied. Usually, spring charging power is connected be­
tween secondary disconnects SD12 and SD16, closing
control power between SD13 and SD16, and tripping
power between SD11 and SD15. Secondary discon­
nects are arranged with SD1 on top, and SD16 on the
bottom). Examine the operation of the circuit breaker
during these operations for any evidence of difficulty,
erratic operation, etc.
5. Test the tripping system, using an appropriate test set.
such as the Siemens Portable Static Trip Test Set, model
PTS-4. Refer to ·static Trip Ill Information and Instruction
Guide".
SG-3118 and "Portable Test Set Instructions·.
SG-3138 for information on testing. The test should in­
clude tripping of the circuit breaker by the trip device.
This confirms the functionality of the system, including
the trio device and the tripping components.
6.
Clean any
accum:.;lation of
dust or dirt from the circuit
breaker. For insulated parts. use a clean cloth saturated
with a non-toxic cleaner. such as denatured alcohoL
7. Turn the racking screw to the DiSCONNECTED position,
and reinstall the circuit breaker in the cubicle.
Recommended RL Breaker Maintenance
and Lubrication Procedure
A suggested procedure to follow during maintenance and
lubrication sessions:
1. De-energize the primary and control circuits.
2. With the cubicle door closed, rack the circuit breaker to
the DISCONNECTED position.
3. Open the cubicle door. and remove the circuit breaker
from the cubicle.
4. Rotate the racking screw to the TEST
position (ap­
proximately 3 turns) to clear the spring discharge inter­
lock. This is necessary before the closing springs can
be charged. and also makes removal of the arc chutes
easier.
5. Remove arc chutes and examine arc chutes and circuit
breaker contacts for burned, cracked. or broken parts.
To remove arc chutes, proceed as follows:
a. Remove mounting screws for holding clips, remove
bar and phase barriers.
b. Lift arc chutes vertically to clear arc runners.
6. Inspect arc chutes for excessively burned arcing plates.
Replace arc chutes under the following conditions:
a. Copper-plated steel plates in the arc chutes measure
less than 0.06" thickness for RL-800 through
RL-2000
circuit breakers.
b. Copper-plated steel plates in the arc chute measure
less than 0.08" thickness for
RL-3200
and RL-4000
circuit breakers.
7. Wipe the contacts with a ciean cloth saturated with a
non-toxic cleaning fluid. such as denatured alcohoL
8. Replace badly ouned o� pitted contacts. (See Cc1tact
Reolace":"'ent Page
1 3,
and Lubrication Instructions,
Page
17.i Do
not ilb·icate faces
of contacts.
11
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