TERASAKI AME Series, Инструкция по эксплуатации

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KRB-5200h
-28-
8. MAINTENANCE AND INSPECTION
Caution
(1) Maintenance and inspection of the ACB must be performed by competent persons.
(2) Prior to commencing maintenance and/or inspection work on the ACB, stop the generator
and open a disconnector or the like to isolate all sources of power/voltage from both the
primary and auxiliary circuits.
Otherwise, electric shock may result.
(3) When terminating conductors to the ACB, tighten terminal screws to the torque specified in
3. INSTALLATION of this manual.
Otherwise, a fire could result.
8.1 Guideline of Inspection Interval
Prior to commencing the initial current application to the ACB and one month after commencing
generator operation, inspect the ACB according to 8.2 Inspection Procedure. Thereafter, the ACB
requires to be inspected at appropriate intervals, which vary depending on the environmental and
operating conditions such as installation site, number of operation cycles, trip pick-up current,
breaking current and the like. Tables 1, 2, and 3 summarize the guidelines of inspection intervals.
Table 1: Environmental Conditions
Installation site Example Guideline of inspection intervals
1
Interior where air is
always kept clean
and dry Dust-proof and
air-conditioned
electric room

Within 10 years after installation: Every 2 or 3 years

10 years or more after installation: Every year

15 years or more after installation: Every 6 months
2
Interior which is free
from corrosive gases
and excessively
dusty air
Switchboard or
enclosure in
electric room
which is not
dust-proof and
air-conditioned

Within 10 years after installation: Every year

10 years or more after installation: Every 6 months

15 years or more after installation: Every month
Table 2: Number of Operation Cycles
Operating condition Guideline of inspection intervals
AME3B AME4B AME6B, AME8B, AME10B
Nearly no load 2000 2000 1000
Rated current 2000 1000 500
Overcurrent (approx. 6 times the
frame current) and short-circuit
current
Every operation Every operation Every operation
Table 3: Endurance in terms of Number of Operation Cycles
Operating condition Endurance (No. of operation cycles)
AME3B AME4B AME6B, AME8B, AME10B
Actual load 2000 1000 500
Mechanical operation * 10000 * 10000 * 5000
* Including the number of operation cycles with actual load