Features And Characteristics; Basic Confi G U Rations; Manual Operation; Electrical Operation - GE Power Break II Manual

Features and Characteristics

II
Basis Configurations
All Power Break® circu it breakers a re available in two levels
of interrupting capacity - "sta ndard break" and "Hi-B reak®"
b reakers. Each interrupting level is available in both station­
a ry and d rawout construction, w ith a ful l complement of
control and signaling accessories.
Standard brea k breakers a re designed to meet the majority
of application req ui rements, ca lling for moderate levels of
available short-circuit current.
Hi- Break breakers, on the other hand, a re specially desig ned
to w ithstand the stresses, and safely interrupt high levels of
short circuit current found in some app lications (from 65 to
200 kA rms sym metrical amps - depending on voltage).

Manual Operation

The circuit brea ker closing spring is energ ized by size opera­
tions of the retractable pump handle. Each handle move­
ment is a stage in the p re-charging of a spring-loaded,
quick-ma ke, quick-break mechanism. To close the b reaker
contacts, depress the "PUSH ON" button. With the breaker
in the "ON" position, it is now possible to recharg e the main
closing springs by repeating the spring cha rging procedu re.
The circuit breaker opening springs a re a utomatically
charged when the breaker is closed. To open the breaker
and de-energ ize downstream circuits, manually depress the
"PUSH OFF" button.

Electrical Operation

The electrical operation fits u nder the cover of the manually
I I
operated breaker. This assembly may be a dded to a ny Power
Break breaker - in the factory or in the field - to provide
the electrical cha rge feature. All breaker controls inputs and
outputs a re pre-wired to dedicated second a ry terminals for
Table
5.1
Sequence Of Operation
ON/OFF Main Breaker
Indicator Contacts
OFF Open
OFF Open
ON Closed
ON Closed
OFF Open
Operation of c i rcuit breaker pump handle
easy field installation. To complete the remote-operation
feature, a remote-close solenoid and either a shunt trip (with
or w ithout lockout) or undervoltage release accessory is a lso
requi red. The electrical operator can be wired to a utomati­
cally re-ch arge the breaker after CLOSE or upon command.
Should motor control power be lost during the charg i ng cycle
13 seconds duration), spring charging may be com pleted
manually by using the pump handle. No special tools a re
req u ired. Any electrically operated breaker may be operated
manually.
For details of electrica l control power req uirements and w i r­
ing diagrams, see pages 25-26.
Breaker Closing Speed
Three-cycle maximum closing speed, at nominal voltage, is
standard for all fra me sizes. This speed exceeds the require­
ments for generator synchronizing.
Charging Spring Condition of
Ind icator Cha rging Spring
Discharged Discharged
Charged Fully Charged
Discharged Discharged
Fully Charged
Charged
Charged Fully Charged
Next Permissible
Operating Function
Closing springs may be charged
Contacts may be closed
Contacts may be opened, or
closing springs may be charged
Contacts may be opened
Closing spring may be discharged
without closing contacts by depressing
OFF button while pushing ON button