DC CIRCUIT BREAKER

PURPOSE:To enable inspection of a switching element even under no-load condition of feeder line for electric vehicle by providing a test load circuit independently from normal load at the load side of a current detector connected in series with a first switching element. CONSTITUTION:Power fed from...

Full description

Saved in:
Bibliographic Details
Main Author YONEHATA YUZURU
Format Patent
LanguageEnglish
Published 14.11.1989
Subjects
BASIC ELECTRONIC CIRCUITRY
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
PULSE TECHNIQUE
Online AccessGet full text

Cover

More Information
Summary:PURPOSE:To enable inspection of a switching element even under no-load condition of feeder line for electric vehicle by providing a test load circuit independently from normal load at the load side of a current detector connected in series with a first switching element. CONSTITUTION:Power fed from an AC bus 1 is fed through a transformer 2 to a rectifier 3 where it is rectified, then the rectified power is fed through a DC bus 4 and a circuit breaker 5 to an electric vehicle feeder line 7. Current value of the circuit breaker 3 is fed to a circuit breaker control circuit section 6 and a circuit breaker 53 is controlled through an open/close commander 61 in the circuit breaker control circuit section 6. The circuit breaker control circuit 6 produces an alarm if there is a logical unmatch between an interruption command and the current value. A test load 56 is arranged at the load side of the current detector 53 and test is made by opening a switch 54 while closing a switch 57 and feeding current to the test load 56. By such arrangement, inspection can be carried out even under no-load condition of the feeder line 7.
Bibliography:Application Number: JP19880109620