7UT6131-6EB92-1BC3-L0D優(yōu)質(zhì)推薦,西門子7UT6131-6EB92-1BC3-L0D差動保護,用于變壓器保護,發(fā)電機保護,短引線,單母線,單側(cè)熱過負荷保護,隨著科學技術(shù)進步,適用環(huán)境的更高要求,微機保護西門子7UT6131-6EB92-1BC3-L0D差動保護功能要求也越來越高RDS100型微機綜合保護裝置可作為35KV及以下電壓等級的發(fā)電廠、變電站、配電站等。微機保護裝置具有集成度高、西門子7UT6131-6EB92-1BC3-L0D差動保護保護配置齊全抗干擾能力強、功耗小、抗惡劣環(huán)境等有點,特別適合于直接分散安裝。
7UT6131-6EB92-1BC3-L0D參數(shù):DIGITAL DIFFERENTIAL PROTECTION
RELAY,
FOR TRANSFORMER, GENERATORS,
MOTOR, SMALL BUSBARS AND
SHORT CABLE,
4-LINE ALPHANUM.BACKLIT DISPLAY
14 PROGRAMMABLE LED,
NAVIGATION KEYS, FUNCTION KEYS,
NUMBER BLOCK,
CASE 1/2 X 19", 5BI, 8BO,
1 WATCHDOG CONTACT, 11I, IEE,
CURRENT TRANSFORMER: 1A
SUPPLY VOLTAGE:DC 110V TO 250V,
AC 115V/230V,
TRIGGER LEVEL BINARY INPUT 176V
FLUSH MOUNTING CASE,
SCREW TERMINALS
(DIRECT WIRING/RING LUGS)
REGION WORLD, IEC/ANSI,
LANGUAGE ENGLISH
(LANGUAGE CHANGEABLE)
SYSTEM PORT
(ON REAR OF DEVICE) PORT B
MODBUS, RS485
DIGSI 4/MODEM PORT
(ON REAR OF DEVICE) PORT C
DIGSI 4, BROWSER OR THERMO-BOX,
ELECTRICAL RS485
BASIS MEASURED VALUES,
FAULT RECORDING
RESTRICTED EARTH FAULT
LOW IMPEDANCE (87N)
UMZ - 1-PHASE FOR RESTRICTED
EARTH FAULT HIGH IMPEDANCE
(87N W/O RESISTOR AND VARISTOR)
SENSITIVE OVERCURR.-TIME PROT./
TANK PROTECTION (64)
NEGATIVE SEQUENCE PROTECT. (46)
BREAKER FAILURE PROTECT. (50BF)
TRIP CIRCUIT SUPERVISION (74TC)
ADDITIONAL FUNCTION:
VOLTGAE MEASUREMENT AND
OVEREXCITATION PROTECTION,
OVER- /UNDERVOLTAGE PROTECTION,
FREQUENCY PROTECTION,
DIRECTIONAL PROTECTION,
FUSE FAILURE MONITOR
MULTIPLE PROTECTION FUNCTION +
FREE CONFIGURABLE
PROTECTION MODULES
西門子7UT6131-6EB92-1BC3-L0D差動保護概述
7UT61系列微機電流差動保護總體來說為具有比率制動特性,帶二次諧波及高次諧波制動的分相電流差動保護系統(tǒng),其最基本原理當然仍是差動原理,差動電流(Id)為各側(cè)電流相量和的模,制動電流(Is)為各側(cè)電流相量模的和(國產(chǎn)繼電器多取其值的1/2。)
7UT61動作特性曲線,斜線部分分為兩段,這是它的特點之一,這使得它可以更好的與TA飽和特性相匹配,從而在獲得較高靈敏性的同
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