GE Entellisys, Инструкция по установке и обслуживанию, Страница: 79 / 80

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Entellisys Low Voltage Switchgear
Appendix F. Circuit Breaker Repetitive Duty Data
This standard applies to all parts of a circuit breaker that
function during normal operation. It does not apply to other
parts, such as overcurrent tripping devices, that function only
during infrequent abnormal circuit conditions.
1. Servicing consists of adjusting, cleaning, lubricating,
tightening, etc., as recommended by the manufacturer.
When current is interrupted, dressing of contacts may
be required as well. The operations listed are on the
basis of servicing at intervals of 6 months or less.
2. When closing and opening no-load.
3.
With rated control voltage applied.
4. Frequency of operation not to exceed 20 in 10 minutes
or 30 in an hour. Rectifiers or other auxiliary devices
may further limit the frequency of operation.
5. Servicing at no greater intervals than shown in Column
2 of Table F-1.
6. No functional parts should have been replaced during
the listed operations.
7. The circuit breaker should be in a condition to carry its
rated continuous current at rated maximum voltage and
perform at least one opening operation at rated short-
circuit current. After completion of this series of
operations, functional part replacement and general
servicing may be necessary.
8. When closing and opening current up to the continuous
current rating of the circuit breaker at voltages up to
the rated maximum voltage and at 85% power factor or
higher.
9. When closing currents up to 600% and opening currents
up to 100% (80% power factor or higher) of the
continuous current rating of the circuit breaker at
voltages up to the rated maximum voltage.
When closing currents up to 600% and opening currents
up to 600% (50% power factor or less) of the continuous
current rating of the circuit breaker at voltages up to
rated maximum voltage, the number of operations
shown shall be reduced to 10% of the number listed.
10. If a fault operation occurs before the completion of the
listed operations, servicing is recommended and
possible functional part replacements may be necessary,
depending on previous accumulated duty, fault
magnitude, and expected future operations.
Appendix G. Fuses for EGF-08/16 and FRE Elements
NEMA
Fuse Class
Breaker Type
EGF Ampere
Gould
Shawmut
600V, 60 Hz 08 16 Rating Fuse Cat. No.
“J”
x
x
x
x
x
x —
---
x
x
x
x
300*
350*
400*
450
500
600
A4J300
A4J350
A4J400
A4J450
A4J500
A4J600
“L”
x
x
x
x
—
x
x
x
x
x 800
1000
1200
1600
2000
A4BY800
A4BY1000BG
A4BY1200BG
A4BY1600BG
A4BY2000
Welder Limiter x
x
---
x
x
x 800
1600
2000
A4BX800
A4BX1600BG
A4BX2000
Special — x 2500 A4BQ2500GE
*Mounting adapter required.
Table G-1. Fuses for Integrally Fused EntelliGuard Breakers
Ampere Fuse Size Fuse Cat. No’s
Rating Min. Max. Gould Shawmut
3200
4000
5000 2000A
2000A
2000A 4000A
5000A
5000A A4BY2000-55BA
A4BQ2500-55BA
A4BY3000-55BA
A4BY4000-55BA
A4BY5000-55BA
Table G-2. Fuses for Roll-out Fuse Carriages