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差动保护7UT6121-4EB20-1AA0：

DIGITAL DIFFERENTIAL PROTECTION
RELAY,
FOR TRANSFORMER, GENERATORS,
MOTOR AND SHORT CABLE
4-LINE ALPHANUM.BACKLIT DISPLAY
7 PROGRAMMABLE LED,
NAVIGATION KEYS, FUNCTION KEYS,
CASE 1/3 X 19", 3BI, 4BO,
1 WATCHDOG CONTACT, 7I, IEE,
CURRENT TRANSFORMER: 1A
SUPPLY VOLTAGE: DC 60V TO 125V,
TRIGGER LEVEL BINARY INPUT 19V
FLUSH MOUNTING CASE,
SCREW TERMINALS
(DIRECT WIRING/RING LUGS)
REGION WORLD,
50/60HZ,  IEC/ANSI,
LANGUAGE ENGLISH
(LANGUAGE CHANGEABLE)
SYSTEM PORT
(ON REAR OF DEVICE) PORT B
IEC 60870-5-103 PROTOCOL,
ELECTRICAL RS485,
WITHOUT DIGSI 4/MODEM PORT
BASIS MEASURED VALUES,
FAULT RECORDING
FUNCTIONALITY:
DIFFERENTIAL PROTECTION,
BASIC FUNCTION,
DIFFERENTIAL PROTECTION
TRANSFORMER, GENERATOR, MOTOR,
BUSBAR, (87 T G M L),
OVERLOAD PROTECTION FOR ONE
PAGE (49), LOCK OUT (86),
TIME OVERCURR.PROTECT.TOC PHASE
(50/51): I>, I>>, IP
(INRUSH BLOCKING)
TIME OVERCURR.PROTECT.TOC 3I0
(50/51): 3I0>, 3I0>>, 3I0P
(INRUSH BLOCKING)
TIME OVERCURR.PROTECT.TOC EARTH
(50/51): IE>, IEE>>, IEP
(INRUSH BLOCKING)
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