Advertisement
Ground-Fault Protection
Ground-fault protection with ProTrip Trip Units is
provided in the Rating Plug. Rating Plugs are equipped
with defeatable ground fault protection.
Ground-fault protection is activated when a Rating Plug is
installed in the Trip Unit. The pickup and delay settings
available with the switches on the Rating Plug are
described in DEH–40034, ProTrip™ Trip Units User's Guide.
WARNING: Rating Plugs equipped with ground fault
must be replaced only with other ground-fault-equipped
Rating Plugs. Failure to do so could result in personal
injury or death, as well as damage to equipment.
AVERTISSEMENT: Les calibreurs munis d'un détecteur
de défaut de mise à la terre ne doivent être remplacés
que par des calibreurs munis d'un détecteur de défaut de
mise à la terre. La non application de cette directive peut
entraîner des blessures ou même provoquer la mort ainsi
qu'endommager l'équipment.
Installation
Before installing a Rating Plug into a ProTrip Trip Unit,
inspect the plug for damage, then follow these steps:
1. Verify that the Rating Plug catalog number matches
the desired continuous current rating (X) and the
sensor rating (S) on the breaker frame.
2. Hold the Rating Plug between the thumb and
forefinger, then push it into the Trip Unit. Proper
engagement is verified by a click.
CAUTION: Do not attempt to push the Rating Plug into
the Trip Unit if there is resistance. This may indicate the
wrong Rating Plug for the current sensor rating. Stop
immediately and verify that the breaker sensor rating (S)
and the Rating Plug nameplate "S=" value are the same.
ATTENTION: Il ne faut pas essayer de pousser le calibreur
dans le déclencheur si il y a une résistance. Cela peut
indiquer que c'est le mauvais calibreur pour ce type
d'appareil. Arrêtez immédiatement et vérifiez que la
valeur assignée du disjoncteur "S" corresponde à celle de
la plaque signalétique du disjoncteur "S=."
These instructions do not cover all details or variations in equipment nor do they provide for every possible contingency that
may be met in connection with installation, operation, or maintenance. Should further information be desired or should
particular problems arise that are not covered sufficiently for the purchaser's purposes, the matter should be referred to the
GE Company.
g
DEH40054 R01 1198
General Electric Company
41 Woodford Ave., Plainville, CT 06062
© 1998 General Electric Company
Removal
An installed Rating Plug is seated firmly in the Trip Unit.
As shown in Figure 1, there are tabs at the sides of the
Rating Plug for removal. A Rating Plug Removal Tool,
catalog number TRTOOL, also known as an integrated
circuit (DIP) extractor, is required to remove the Rating
Plug. Grasp the tabs of the Rating Plug with the tool, as
illustrated in Figure 2. Be careful to hold the tabs and not
the front cover, as the Rating Plug could be damaged
otherwise. Gently pry the Rating Plug out by pulling away
from the Trip Unit. A gentle left–right wriggling motion
assists the removal. Insure that the tabs are held securely
until the Rating Plug is completely removed.
NOTE: Protection to the breaker is maintained at only
25% of the current sensor rating when the Rating Plug is
removed. If the breaker is carrying more than 25% of the
current sensor rating, the breaker will trip after the long-
time delay setting.
NOTE: La protection du disjoncteur n'est maintenue
qu'a 25% de la valeur du transformateur de courant
lorsque le calibreur est retiré. Si le disjoncteur est chargé
à plus de 25% de la valeur du transformateur de courant,
le disjoncteur se déclenchera après une période
prédéterminée par une mnuterie.
Figure 2. Rating Plug removal.
GE Industrial Systems
Advertisement
