GE AF-650 GP Series, Design And Installation Manual

Page: 148 / 166

13.3 Fuse Specifications
13.3.1 Fuses
It is recommended to use fuses and/ or circuit breakers on
the supply side as protection in case of component break-
down inside the adjustable frequency drive (first fault).
NOTE!
This is mandatory in order to ensure compliance with IEC
60364 for CE or NEC 2009 for UL.
WARNING
Personnel and property must be protected against the
consequence of component breakdown internally in the
adjustable frequency drive.
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 protected against short-circuit
and overcurrent according to national/international
regulations.
NOTE!
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 in case of component breakdown in the
adjustable frequency drive.
Overcurrent protection:
The adjustable frequency drive provides overload
protection to limit threats to human life, property damage
and to avoid fire hazard due to overheating of the cables
in the installation. The adjustable frequency drive is
equipped with an internal overcurrent protection
(
F-43 Current Limit ) that can be used for upstream overload
protection (UL applications excluded). Moreover, fuses or
circuit breakers can be used to provide the overcurrent
protection in the installation. Overcurrent protection must
always be provided in accordance with national
regulations.
WARNING
In case of malfunction, not following the recommendation
may result in personnel risk and damage to the drive and
other equipment.
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 drive to an equal or lower level
than the compliant circuit breakers.
If fuses/circuit breakers are chosen according to
recommendations, possible damage to the drive will be
limited to damage mainly within the unit.
13.3.2 Recommendations
WARNING
In case of malfunction, not following the recommendation
may result in personnel risk and damage to the adjustable
frequency drive and other equipment.
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 drive to an equal or lower level
than the compliant circuit breakers.
If fuses/circuit breakers according to recommendations are
chosen, possible damage to the adjustable frequency drive
will mainly be limited to damage inside the unit.
13.3.3 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 100,000 Arms (symmetrical), 240 V, or 480 V, or
500 V, or 600 V depending on the adjustable frequency
drive voltage rating. With the proper fusing the adjustable
frequency drive short circuit current rating (SCCR) is
100,000 Arms.
Specifications AF-650 GP
TM
Design and Installation Guide
DET-767A 13-19
13 13