Fuse Specifications; Recommendations; Ce Compliance - GE AF-650 GP Design And Installation Manual

Specifications

13.3 Fuse Specifications

It is recommended to use fuses and/or circuit breakers on
the supply side as protection if there is component break-
down inside the frequency converter (first fault).
NOTICE
Using fuses and/or circuit breakers on the supply side is
mandatory to ensure compliance with IEC 60364 for CE
or NEC 2009 for UL.
WARNING
Protect personnel and property against the consequence
of component break-down internally in the frequency
converter.
Branch Circuit Protection
To protect the installation against electrical and fire hazard,
all branch circuits in an installation, switch gear, machines,
and so on, must be protected against short circuit and
overcurrent according to national/international regulations.
NOTICE
The recommendations given do not cover branch circuit
protection for UL.
Short-circuit protection
GE recommends using the fuses/circuit breakers mentioned
below to protect service personnel and property if there is
component break-down in the frequency converter.
Overcurrent protection
The frequency converter provides overload protection to
limit threats to human life, property damage and to avoid
fire hazard due to overheating of the cables in the instal-
lation. The frequency converter is equipped with an
internal overcurrent protection (parameter F-43 Current
Limit) that can be used for upstream overload protection
(UL applications excluded). Moreover, fuses or circuit
3 13
breakers can be used to provide the overcurrent protection
in the installation. Overcurrent protection must always be
carried out according to national regulations.
WARNING
If there is malfunction, not following the recommen-
dation may result in personnel risk and damage to the
frequency converter and other equipment.
132
The following tables list the recommended rated current.
Recommended fuses are of the type gG for small to
medium power sizes. For larger powers, aR fuses are
recommended. Circuit breakers must be used provided
they meet the national/international regulations and they
limit the energy into the frequency converter to an equal
or lower level than the compliant circuit breakers.
If fuses/circuit breakers according to recommendations are
selected, possible damages on the frequency converter will
mainly be limited to damages inside the unit.

13.3.1 Recommendations

WARNING
If there is malfunction, not following the recommen-
dation may result in personnel risk and damage to the
frequency converter and other equipment.
The tables in chapter 13.3 Fuse Specifications list the
recommended rated current. Recommended fuses are of
the type gG for small to medium power sizes. For larger
powers, aR fuses are recommended. Circuit breakers must
be used provided they meet the national/international
regulations and they limit the energy into the frequency
converter to an equal or lower level than the compliant
circuit breakers.
If fuses/circuit breakers according to recommendations are
selected, possible damage on the frequency converter is
mainly limited to damages inside the unit.

13.3.2 CE Compliance

Fuses or circuit breakers are mandatory to comply with IEC
60364. GE recommend using a selection of the following.
The fuses below are suitable for use on a circuit capable of
delivering 100000 Arms (symmetrical), 240 V, 500 V, 600 V,
or 690 V depending on the frequency converter voltage
rating. With the proper fusing, the frequency converter
short circuit current rating (SCCR) is 100000 Arms.
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