GE Industrial Solutions ProTrip Trip Units for Low-Voltage - Manual (Page 7)

ProTrip™ Trip Units
Chapter 1. Introduction
1
1–1 Applications
The ProTrip™ Trip Units described in this publication
are used on GE; I-T-E® and ABB®; Allis Chalmers®,
Siemens/Allis®, and Siemens®; and Westinghouse and
Cutler-Hammer® low-voltage power circuit breakers.
Figure 1 shows the ProTrip Trip Unit.
Figure 1. Front view of the ProTrip Trip Unit.
1–2 General
ProTrip Trip Units are the same size and have the same
50-pin male D-sub connector as the RMS9D series of
MicroVersaTrip Plus™ and MicroVersaTrip PM™ Trip
Units.
ProTrip Trip Units may be tested with the Trip Unit
installed in the circuit breaker, the rating plug installed in
the Trip Unit, and the breaker carrying current. The Test
Kit plugs into the test socket of the rating plug. The Test
Kit catalog number is TVRMS2 and its operation is
described in GEK–97367.
ProTrip Trip Units are removable from the circuit
breaker. For instructions on installing and removing the
Trip Unit, see Chapter 4.
CAUTION: Removal of a Trip Unit from its breaker must
be performed with the breaker in the OPEN or TRIPPED
position. Draw-out breakers should be racked out first.
ATTENTION: Pour retirer déclencheur, le disjoncteur
doit être en position ouverte ou déclenchée. Les
disjoncteurs débrochables doivent ètre en position
débrochée.
CAUTION: Do not attempt to operate the breaker without
its assigned Trip Unit. Installation of an incorrect Trip
Unit may result in unsafe operation of the breaker.
ATTENTION: Ne pas utiliser le disjoncteur sans son
déclencheur. Une mauvaise installation du déclencheur
peut être dangereuse.
NOTE: Trip Units as received may have settings that are
undesirable for the specific application. Ensure that
settings are appropriately adjusted before energizing.
NOTE: Les disjoncteurs sont livrés avec des réglages
standards qui peuvent être inadéquates pour certaines
applications. Vérifier ces réglages avant de mettre le
disjoncteur sous tension.
1–3 Trip Unit Functions
ProTrip Trip Units have specific standard functions, with
the current rating determined by installation of the rating
plug. The functions of the Trip Unit are as follows:
• Overcurrent protection
– Long-time protection
– Instantaneous protection
• Protection
– Short-time protection, with or without I
2
T
– Ground-fault protection, with or without I 2 T
• Status
– Trip targets
– Health monitor