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SE-703-03-00

更新时间： 2024-11-06 13:45:23
品牌 Logo 应用领域
力特 - LITTELFUSE 继电器微处理器
页数 文件大小 规格书
1页 327K
描述
可在交流直接接地和交流电阻接地系统中运行。 SE-703是一款基于微处理器的接地故障继电器，适用于电阻接地和直接接地系统。 它能够灵敏地检测低至25 mA的接地故障电流，可用于谐波含量极高的系统。

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SE-703-03-00 数据手册

  
Protection Relays and Controls  
Ground-Fault Protection–Grounded Systems  
SE-703 SERIES  
Earth-Leakage Monitor  
Description  
The SE-703 is a microprocessor-based earth-fault relay for resistance-  
and solidly earthed systems. It offers sensitive earth-fault detection as  
low as 25 mA and can be used on systems with significant harmonic  
content.The SE-703 provides feeder-level protection or individual-load  
protection.The output contacts can be connected for use in protective  
tripping circuits or in alarm indication circuits.The analog output can be  
used with a PLC or a meter.The SE-703 is specifically designed to be  
AS/NZS 2081 compliant to either 2011 or 2002 (see ordering options).  
Features & Benefits  
FEATURES  
BENEFITS  
Adjustable pickup  
(25-500 mA)  
Adjustable trip setting provides a wide range of low-  
level protection and system coordination  
Adjustable time delay Adjustable trip delay allows quick protection and  
(INST-500 ms)  
system coordination  
2 Form C ground-fault output contacts for operation of  
separate annunciation and trip circuits  
Output contacts  
Analog output  
(0-5V)  
Allows for connecting an optional meter (PGA-0500)  
or control system  
Simplified Circuit Diagram  
ꢀꢁ  
CT-Loop monitoring  
Alarms when CT is not connected  
A
Contact operating  
mode  
Fail-safe operating mode for undervoltage  
ꢍ
ꢎ
ꢀ
ꢄꢅꢆꢇꢈꢉEꢉ  
ꢊꢇꢋꢋLꢌ  
applications, optional non-fail-safe mode available  
Harmonic filtering  
Eliminates nuisance tripping  
Non-volatile trip  
memory  
Retains trip state while de-energized to simplify  
troubleshooting  
Microprocessor based No calibration required, saves maintenance cost  
Universal  
power supply  
Allows operation in application where one side of PT is  
faulted, provides flexibility for numerous applications  
Compliant with US, Canadian, European, and Australian  
standards for applications in almost any country  
SE-703 SERIES  
(Earth-Leakage Monitor)  
Global certifications  
Lꢃ  
Lꢂ  
Accessories  
A
EFCT Series Ground-Fault CurrentTransformer  
Required zero-sequence current transformer  
specifically designed for low-level detection.  
PGA-0500 Analog % Current Meter  
Optional panel-mounted analog meter displays ground-  
fault current as a percentage of the set-point or 5 A.  
Ordering Information  
ORDERING NUMBER  
SE-703-0U-0x  
CONTROL POWER  
120/240 Vac/Vdc  
12/24 Vdc  
PMA-60 Series – Mounting Adapter  
Required when panel mounting for  
AS/NZS 2081:2011 compliance  
SE-703-0D-0x  
Specifications  
SE-703-0T-0x  
48 Vdc  
IEEE Device Numbers  
Input Voltage  
Ground fault (50G/N, 51G/N)  
See ordering information  
H 75 mm (3.0"); W 55 mm (2.2"); D 115 mm (4.5")  
25-500 mA  
SE-703-03-0x  
24 Vac  
Dimensions  
Trip Level Settings  
Trip Time Settings  
Note: x=0 for AS/NZS 2081:2011 compliance (fail-safe output contacts)  
x=2 for AS/NZS 2081:2002 compliance (selectable fail-safe or non-fail-safe  
output contacts  
INST-500 ms  
Contact Operating Mode Fail-safe (x=0 models) or selectable (x=2 models)  
Harmonic Filtering  
Test Button  
Reset Button  
CT-Loop Monitoring  
Output Contacts  
Approvals  
Standard feature  
Standard feature  
ACCESSORIES  
EFCT Series  
PGA-0500  
REQUIREMENT  
Required  
Optional  
Standard feature  
Standard feature  
Two isolated Form C contacts  
CSA certified, UL Listed (E340889),  
CE (European Union), RCM (Australian)  
AS/NZS 2081:2011 (x=0 models) or  
AS/NZS 2081: 2002 (x=2 models)  
0-5 V  
PMA-55  
Optional  
Compliance  
PMA-60  
Optional  
SE-EFVC Voltage Clamp  
Optional  
Analog Output  
Conformally coated  
Warranty  
Yes  
5 years  
Mounting  
DIN, Surface (standard)  
Panel (with PMA-55 or PMA-60 adapter)  
Rev: 4-D-091517  
Based on Manual Rev 12-B-092117  
© 2017 Littelfuse Protection Relays & Controls  
Littelfuse.com/se-703  
1

中文翻译

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SE-703-03-00 替代型号

型号 品牌 替代类型 描述 数据表
SE-703-03 LITTELFUSE

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 		SE-703-03-02是一款接地漏电监控器，交流供电电压为24V。
SE-703-0D LITTELFUSE

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 		EARTH LEAKAGE MONITOR 24V
SE-703-0D-00 LITTELFUSE

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 		SE-703-0D-00是一款接地漏电监控器，直流供电电压为12-24。
SE-703-0D-02 LITTELFUSE

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 		SE-703-0D-02是一款接地漏电监控器，直流供电电压为12-24。
SE-703-0T LITTELFUSE

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 		EARTH-LEAKAGE MONITOR 32V - 70V
SE-703-0T-00 LITTELFUSE

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 		SE-703-0T-00是一款接地漏电监控器，直流供电电压为48。
SE-703-0T-02 LITTELFUSE

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 		SE-703-0T-02是一款接地漏电监控器，直流供电电压为48。
SE-703-0U LITTELFUSE

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 		MONITOR EARTH LEAKAGE 120/240VAC
SE-703-0U-00 LITTELFUSE

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 		SE-703-0U-00是一款接地漏电监控器，交流和直流供电电压为120/240。
SE-703-0U-02 LITTELFUSE

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 		SE-703-0U-02是一款接地漏电监控器，交流和直流供电电压为120/240。

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