GE Industrial Solutions Power Break II Undervoltage Release 480 & 600 Vac - Manual

Introduction
The Undervoltage Release (UVR) accessory, shown in Figure
1, can be installed in 800–4000 ampere frame Power Break®
II circuit breakers. This accessory trips the circuit breaker when
the input control voltage drops to 35–60% of its rated value
and prevents an open breaker from closing until the input
control voltage is greater than 80% of the rated value.
In addition to providing a trip signal to the breaker, the UVR
accessory can be set up to interact with other Power Break II
accessories, when used with a MicroVersaTrip Plus™ or
MicroVersaTrip PM™ Trip Unit. DIP switches on the rear of
the breaker Trip Unit can configure the UVR accessory to
activate a Bell Alarm–Alarm Only accessory or a Bell Alarm
with Lockout accessory when a UVR trip occurs. The Accessory
Configuration section below describes how this can be done. If
the breaker is equipped with a Power+™ Trip Unit, it is
configured so that only protection trips will activate a Bell
Alarm–Alarm Only or Bell Alarm with Lockout.
The catalog numbers for the UVR for 480 and 600 Vac
applications are listed in Table 1. Voltage and current ratings
in Table 1 are given at the input of the transformer. The
voltage and current ratings at the input of the UVR accessory
are equal to that of the SPUV120AC accessory. Input voltage is
120 Vac, peak inrush current is 3 A, and the nominal RMS
current is 80 mA.
Operation
Apply control voltage to the primary of the supplied step-down
transformer. The secondary of the transformer is connected to
terminals 29 and 30 of the terminal strip on the right side of
the breaker.
WARNING: 480 Vac and 600 Vac Undervoltage Release
accessories must be used with the supplied step-down
transformer.
AVERTISSEMENT: Les modules de déclenchement à manque
de tension 480 Vac et 600 Vac doivent être utilisés avec le
transformateur abaisseur de tension qui est fourni.
When the applied control voltage is above 80% of the UVR’s
rated value, the breaker can be closed. When the voltage drops
to 35–60% of the rated value, the UVR will trip the breaker.
Figure 1. Undervoltage Release.
Catalog
Number
Voltage
Rating➀
Peak Inrush
Current, mA➁
Nominal RMS
Current, mA
SPUV480AC 480 Vac 750 20
SPUV600AC 600 Vac 600 16
➀
Rated for 50/60 Hz. Rating is 120 Vac without step-down
transformer.
➁
Peak inrush current is present for 2–6 ms after activation. This
number is provided so that fuses and supplies can be chosen
appropriately.
Table 1. Catalog numbers and voltages for the Undervoltage Release.
Installation
WARNING: Before installing any accessories, turn the breaker
OFF
, disconnect it from all voltage sources, and discharge the
charging springs.
AVERTISSEMENT: Avant d’installer toute accessoire, mettre
le disjoncteur en position OFF, le déconnecter de toute tension
d’alimentation, et décharger les ressorts d’armement.
The Undervoltage Release is installed in the accessory
compartment through the front of the circuit breaker in the
position shown in Figure 2.
Use the following procedure to install the UVR accessory into
the UVR slot in the accessory compartment of the circuit
breaker:
1. Open the hinged door over the accessory compartment and
Trip Unit.
2. To remove an existing accessory, loosen the accessory
locking screw and pull the accessory out with the Rating
Plug Removal Tool (catalog number TRTOOL).
g
Power Break ® II Circuit Breaker
Accessories
Undervoltage Release
480 & 600 Vac
GEH–6520A