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SE-703

更新时间： 2024-11-30 01:01:31
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力特 - LITTELFUSE /
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描述
The SE-703 is a microprocessor-based earth-fault

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SE-703 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  
(INST-500 ms)  
Adjustable trip delay allows quick protection and  
system coordination  
Form A and Form B or 2 Form C ground-fault output  
contacts for operation of separate annunciation and  
trip circuits  
Allows for connecting an optional meter (PGA-0500) or  
control system  
Output contacts  
Simplified Circuit Diagram  
Analog output  
(0-5V)  
ꢀꢁ  
A
CT-Loop monitoring  
Alarms when CT is not connected  
ꢍ
ꢎ
ꢀ
ꢄꢅꢆꢇꢈꢉEꢉ  
ꢊꢇꢋꢋLꢌ  
Contact operating  
mode  
Fail-safe operating mode for undervoltage 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  
SE-703 SERIES  
(Earth-Leakage Monitor)  
(Output contacts  
vary by model)  
Lꢃ  
Lꢂ  
Accessories  
EFCT Series Ground-Fault CurrentTransformer  
Required zero-sequence current transformer  
specifically designed for low-level detection.  
A
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-OU  
PMA-60 Series – Mounting Adapter  
Required when panel mounting for AS/NZS 2081:2011  
compliance  
CONTROL POWER  
120/240 Vac/Vdc  
12/24 Vdc  
48 Vdc  
SE-703-OD  
Specifications  
SE-703-OT  
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  
SE-703-xx-001  
SE-703-xx-021,2  
24 Vac  
Dimensions  
As above  
Trip Level Settings  
Trip Time Settings  
Contact Operating Mode Fail-safe unless noted  
Harmonic Filtering  
Test Button  
INST-500 ms  
As above  
Standard feature  
ACCESSORIES  
EFCT Series  
PGA-0500  
REQUIREMENT  
Required  
Optional  
Standard feature  
Reset Button  
Standard feature  
CT-Loop Monitoring  
Output Contacts  
Approvals  
Standard feature  
Isolated Form A and Form B unless noted  
CSA certified, UL Listed (E340889),  
CE (European Union), RCM (Australian) unless noted  
AS/NZS 2081:2011 unless noted  
0-5 V  
PMA-55  
Optional  
PMA-60  
Optional  
Compliance  
Analog Output  
Conformally coated  
Warranty  
SE-EFVC Voltage Clamp  
Optional  
Yes  
5 years  
NOTES:  
1
2
Two Form C contacts. CSA and UL certification pending.  
Selectable fail-safe/non-fail-safe operating modes (AS/NZS 2081:2002 compliant)  
Mounting  
DIN, Surface (standard)  
Panel (with PMA-55 or PMA-60 adapter)  
Rev: 4-C-032917  
Based on Manual Rev 12-A-031017  
© 2017 Littelfuse Protection Relays & Controls  
Littelfuse.com/se-703  
1

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SE-703-03 LITTELFUSE

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 		MONITOR EARTH LEAKAGE 24VDC
SE-703-03-00 LITTELFUSE

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SE-703-03-02 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。

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