Manual for Induction Motors and Generators
60 - Maintenance
3BFP 000 050 R0101 REV E
Table 7-1. Maintenance intervals
7.3.1.1 General construction
7.3.1.2 Main supply connection
MAINTENANCE INTERVAL
In equivalent operating hours or time period, which ever comes first
L1 L2 L3 L4
Maintenance
object
4 000 Eq. h
12 000 Eq. h
20 000 Eq. h
28 000 Eq. h
8 000 Eq. h
16 000 Eq. h
24 000 Eq.h 80 000 Eq.h
½ year Annual 3-5 years Overhaul
Check / Test
Maintenance object L1 L2 L3 L4 Check / Test
Machine operation V / T V / T V / T V / T Starting, shut down, vibration measurement, no-load point
Mounting and foundation V V / T V / T V / T / D Cracks, rust, alignment
Exterior V V V V Rust, leakage, condition
Fastenings V V / T V / T V / T Tightness of all fastenings
Anchor bolts V V V / T V / T Fastening, condition
Maintenance object L1 L2 L3 L4 Check / Test
High voltage cabling V V / T V / T V / T / D Wear, fastening
High voltage connections V V / T V / T V / T / D Oxidation, fastening
Terminal box accessories,
i.e. surge capacitors,
arrestors and current
transformers
V V V V General condition
Cable transits V V V V Condition of cables entering the machine and inside the
machine
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