Atec Megger-Multi-Amp-CB-832 - Manual

CB-832
Circuit Breaker and Overload Relay Test Set
■
Digital memory ammeter
■ Digital multirange timer
■
High-current output
■ Solid-state output initiate circuit
CB-832
Circuit Breaker and Overload Relay Test Set
DESCRIPTION
The CB-832 test se is a high-current circuit breaker and
overload relay test set. Model CB-832 is designed to test
the circuit breaker and overload relays by means of
primary current injection.
The CB-832 is a self-contained test set that incorporates a
variable high-current output and appropriate control
circuitry and instrumentation for testing thermal, magnetic
or solid-state motor overload relays; molded-case circuit
breakers; and ground-fault trip devices.
APPLICATIONS
One of the most common applications of the CB-832 is the
calibration of magnetic overload relays, such as those
used for protecting air conditioning systems. By providing
up to 1000 amperes to simulate overload conditions, it also
is capable of testing the time-delay characteristic of
magnetic overload relays rated up to 500 amperes.
In addition, the CB-832 can test the time-delay
characteristics of thermal motor overload relays and
molded-case circuit breakers rated up to 225 amperes,
when following the recommended test procedure of
testing the time delay of thermal devices at three times
their rating.
Higher currents are available for the short durations
required to test an instantaneous trip element. For
example, the test set will provide a short-duration output
of 1800 amperes through a typical 225 ampere, molded-
case circuit breaker. Additional applications include
verifying the ratio of current transformers and testing
panelboard ammeters and voltmeters.
FEATURES AND BENEFITS
■ Digital memory ammeter: High-accuracy, direct-
reading instrumenthas read-and-hold memory for
measurement of short-duration currents.
■ Digital multirange timer: Crystal-controlled, high-
accuracy instrument measures operating time to 1
millisecond.
■ High output current: Provides instantaneous currents
up to 1800 amperes through a 225-ampere breaker.
■ Solid-state output initiate circuit: Solid-state circuit
eliminates the need for contact maintenance.
■ Protection: Overload and short-circuit protection is
incorporated.
■ Enclosure: Heavy-duty Formica enclosure is equipped
with carrying handles and removable hinged cover that
protects instruments and controls during transportation
and storage. Space is provided for test lead storage.
SPECIFICATIONS
Input (specify one)
120 V OR 240 V, 50/60 Hz, 1 f
Output
Output Ranges: Continuously adjustable in three ranges to meet
a variety of test circuit impedances:
0 to 500 A at 3.5 V max.
0 to 125 A at 14 V max.
0 to 25 A at 70 V max.