Tdi for Relays

ACCEPTANCE TESTS ON ELECTRICAL RELAYS

CONTENTS

A.

PURPOSE

B.

PRELIMINARY CHECKS

B .1

PHY PHYSICAL EXAMINATION

B.2 B.2

INSU INSUL LATION RES RESIISTA STANCE NCE TE TEST

C.

PRE PRECAUT CAUTIIONS ONS FOR FOR TRANS RANSPO POR RT/STO STORAGE RAGE

D.

TESTS FO FOR RE RELAY CHARACTERISTI STICS

D .1

OVERCURRENT RE RELAYS

D.2 D.2

VOL VOLTAGE OPE OPERA RAT TED MEA MEASU SURI RING NG REL RELA AYS

D .3

DIFFERENTIAL RELAYS

D .4

BALANCE CU CURRENT RE RELAYS

D.5 D.5

DIRE DIRECT CTIO IONA NAL L OVER OVER CURR CURREN ENT T REL RELA AYS

D .6

REVERSE POER RELAYS

D.! D.!

NEGA NEGAT TIVE IVE SE"U SE"UEN ENCE CE CUR CURRE RENT NT REL RELA AYS

D.# D.#

LOSS LOSS OF EXI EXIT TATION RELA RELAY YS

D.$ D.$

HIGH HIGH IMPE IMPEDA DANC NCE E BUS BUS DIFFE DIFFERE RENT NTIA IAL L RELA RELAY YS

D.1% D.1%

SYNC SYNCHR HRON ONIS ISM M CHEC CHECK K RELA RELAYS SCHEM SCHEME E

D.11 D.11

OVER OVER/U /UND NDER ER FRE" FRE"UE UENC NCY Y RELA RELAY YS

D.12 D.12

AUX. AUX. RELAY RELAYS &INCLUDI &INCLUDING NG HIGH HIGH SPEED TRIPP TRIPPING ING RELA RELAY YS ' TIMER  TIMER  RELAYS(

P)*+ 1 ,-

A.

PURPOSE

A+0)+ 0+0 )+ )+ ,0 , +789 ++:+ +8)9 0, ,-; 0