Before Commencing Repair Work; Special Conditions; Caution - GE AF-600 FP Operating Instructions Manual

2.1.4 Before commencing repair work

1. Disconnect the frequency converter from mains
2. Disconnect DC bus terminals 88 and 89
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3. Wait at least the time mentioned in section General Warning above
4. Remove motor cable

2.1.5 Special conditions

Electrical ratings:
The rating indicated on the nameplate of the frequency converter is based on a typical 3-phase mains power supply, within the specified voltage, current and
temperature range, which is expected to be used in most applications.
The frequency converters also support other special applications, which affect the electrical ratings of the frequency converter.
Special conditions which affect the electrical ratings might be:
• High temperature applications which require de-rating of the electrical ratings
• Marine applications with more severe environmental conditions.
Other applications might also affect the electrical ratings.
Consult the relevant sections in this manual and in the AF-600 FP Design Guide for information about the electrical ratings.
Installation requirements:
The overall electrical safety of the frequency converter requires special installation considerations regarding:
• Fuses and circuit breakers for over-current and short-circuit protection
• Selection of power cables (mains, motor, brake, loadsharing and relay)
• Grid configuration (IT,TN, grounded leg, etc.)
• Safety of low-voltage ports (PELV conditions).
Consult the relevant clauses in these instructions and in the AF-600 FP Design Guide for information about the installation requirements.

2.1.6 Caution

The frequency converter's DC link capacitors remain charged after power has been disconnected. To avoid an electrical shock hazard, dis-
connect the frequency converter from the mains before carrying out maintenance. Before doing service on the frequency converter, wait at
least the amount of time indicated below:
Voltage
380 - 480 V
525 - 600 V
Be aware that there may be high voltage on the DC link even when the LEDs are turned off.
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AF-600 FP High Power Operating Instructions
Power size
110 - 250 kW
315 - 1000 kW
45 - 400 kW
450- 1000 kW
Min. Waiting Time
20 minutes
40 minutes
20 minutes
30 minutes