Maintenance; Warnings; Maintenance Program; Circuit Breaker Life - Allen-Bradley 140G-R Installation Instructions Manual

8

Maintenance

8.1

Warnings

WARNING RISK OF ELECTRICAL SHOCK
IMPORTANT NOTE: before performing any maintenance operation:
!
- Turn circuit breaker to the OFF position. Make sure springs of the operating mechanism are discharged.
- Remove power from Power and Control terminals and visibly ground line side and load side terminals.
Rockwell Automation declines any responsibility for the injury of people or property damage resulting from the failure to comply
with the instructions set out in this document.
Installation putting into service routine and emergency maintenance shall be performed by qualifi ed personnel with detailed
knowledge of this device.
8.2

Maintenance program

8.2.1

Circuit breaker life

When regular maintenance is performed, 140G-R circuit breakers - with or without shunt opening or shunt closing devices - can
withstand the following operating cycles without replacement of parts.
Frame rated current [A]
2000A
2500A
3000A
(1) Values refl ect installation in accordance with the Installation Instructions.
(2) Extreme enviromental conditions, pollutants and/or shock and vibrations can reduce the life of this product.
8.2.2 Maintenance program
Carry out the following operations at least once a year in normal operation or otherwise every 6 months, and under all circumn-
stances after tripping due to a short circuit.
- Circuit-breakers that are operated infrequently or that remain closed or open for long periods of time are subject to First Level
maintenance.
- Installation of the mechanical operation counter (supplied separately) is recommended.
- Visually inspect from the outside for damage; remove any dust or dirty using clean dry rags.
Maintenance operations
First Level
Second Level
(1)
Values refl ect installation in accordance with the Installation Instructions.
(2)
Extreme enviromental conditions, pollutants and/or shock and vibrations can reduce the life of this product.
DIR 1000682R0002 Version 03
Mechanical life (2)
N° of Frequency
operations
operations/
x 1000 hour
15 60
15 60
15 60
Installations in normal places
One year, or 20% of mechanical life, or 20%
of electrical life
Three years, or 50% of mechanical life, or
50% of electrical life, or after a trip under
short-circuit
(1)
Electrical life
415 V ~
N° of operations x 1000
4.5
4
3
Intervals
Installations in dusty or polluted places
(1) = level of dust measured > 1 mg/m³ ]
6 months, or 10% of mechanical life, or 10%
18 months, or 25% of mechanical life, or
25% of electrical life, or after a trip under
(13)
(2)
Frequency
operations/hour
30
30
30
( 1)/( 2)
of electrical life
short-circuit
[