GE AF-600 FP Design Manual page 75

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Illustration 4.17: Mounting of bottom plate,51Unit Size .
The bottom plate of the 51 Unit Size can be mounted from either in- or outside of the Unit Size, allowing flexibility in the installation process, i.e. if mounted from
the bottom the glands and cables can be mounted before the frequency converter is placed on the pedestal.
4.2.8 Fuses
Branch Circuit Protection
In order to protect the installation against electrical and fire hazard, all branch circuits in an installation, switch gear, machines etc., must be short-circuit and
over-current protected according to the national/international regulations.
Short-circuit protection:
The frequency converter must be protected against short-circuit to avoid electrical or fire hazard. GE recommends using the fuses mentioned
below to protect service personnel and equipment in case of an internal failure in the drive. The frequency converter provides full short-circuit
protection in case of a short-circuit on the motor output.
Over-current protection
Provide overload protection to avoid fire hazard due to overheating of the cables in the installation. Over current protection must always be
carried out according to national regulations. The frequency converter is equipped with an internal over current protection that can be used
for upstream overload protection (UL-applications excluded). See par. F-43 Current Limit in the AF-600 FP Programming Guide . Fuses must be
designed for protection in a circuit capable of supplying a maximum of 100,000 A
If UL/cUL is not to be complied with, we recommend using the following fuses, which will ensure compliance with EN50178:
P110 - P250
P315 - P450
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(symmetrical), 500 V/600 V maximum.
rms
380 - 480 V
380 - 480 V
AF-600 FP Design Guide
type gG
type gR