Atec Megger-DDA-1600 User Manual download pdf

DDA-1600

Circuit Breaker Test Set

■

Model DDA-1 Digital Data Acquisition

Instrumentation and Control System

■

Variable pulse time and firing-angle

output current control

■

Tests wide range of breakers

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Modular, portable design

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Compliant with NEMA AB-4 test

guidelines

DDA-1600

Circuit Breaker Test Set

DESCRIPTION

The Model DDA-1600 Circuit Breaker Test Set incorporates

proven transformer design with the latest development in

high-current instrumentation and control. This new design

means the DDA-1600 is fully compliant with NEMA AB-4

test guidelines.

This combination provides the user with a portable,

economical, high-current source for primary injection

testing.

Model DDA-1600 provides all the controls, instrumentation

and output capabilities to test low-voltage circuit breakers

in a three-module configuration.

Module 1 – Controller and instrumentation module

contains all the control circuitry and instrumentation

needed for manually testing low-voltage circuit breakers.

Module 2 – Power module contains the coarse and fine-

current controls, along with the SCR initiate package.

Module 3 – Output module contains the high-current

output transformer and the current sensors.

Model DDA-1600 comes complete with all interconnect

cables. Each module is housed in its own rugged, compact

enclosure. The test set is easily transported and may be

connected to the test device by cables or stab assemblies.

APPLICATIONS

Ideally suited for industrial, utility and testing service

company use, Model DDA-1600 is designed to maintain

and test low-voltage power circuit breakers rated to 1600-

ampere frame size.

In addition, it can be used for verifying the ratio of current

transformers and testing thermal or magnetic motor

overload relays.

In the series configuration, the higher voltage output of

Model DDA-1600 permits ready use in substations for

primary injection testing of high-voltage circuit breakers

and protective relays.

FEATURES AND BENEFITS

Model DDA-1600

■

Portable: Housed in a lightweight, rugged, three-piece

chassis that can be carried. This reduces the need for

heavy equipment to transport the test set.

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Versatile: Designed to test a wide range of air frame and

molded-case circuit breakers. Model DDA-1600 will test

airframe circuit breakers rated up to 1600 amperes and

molded-case circuit breakers rated up to 1200 amperes.

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Initiating control circuit: Fully digital initiating

control circuit provides both pulsed and maintained

control modes of output duration.

The pulsed mode automatically pulses the output to any

programmed pulse duration. This provides additional

testing capabilities for electromechanical and solid-state

trip devices. A short pulse duration also limits the

preheating of the breaker under test while setting the

test current.

In the maintained mode, the output remains energized

until the device under test operates, which both stops

the timer and de-energizes the output.

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Summary of Contents

Page 1 - Circuit Breaker Test Set

DDA-1600Circuit Breaker Test Set Model DDA-1 Digital Data AcquisitionInstrumentation and Control System Variable pulse time and firing-angleoutput cur

Page 2

DDA-1600Circuit Breaker Test Set Zero dc offset: Use of digitally controlled SCRs insteadof a contactor to initiate the output of the test seteliminat

Page 3

DDA-1600Circuit Breaker Test SetSPECIFICATIONSInputOther input voltages are available with an optional inputautotransformer, Model AT-5: 208/240/575 V

Page 4 - ORDERING INFORMATION

DDA-1600Circuit Breaker Test SetItem (Qty) Cat. No.Model DDA-1600 DDA-1600Model DDA-1600/50 DDA-1600/50Included AccessoriesInput leads, 15 ft (4.5 m),

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Atec Megger-DDA-1600 User Manual

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