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Shanghai Tianbi Electric Technology Co., Ltd
Guodian Nanrui NSR631RF-DA Grounding Transformer Protection and Measurement Device
NegotiableUpdate on 05/06
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Overview
The NSR631RF-DA grounding transformer protection and measurement device $r $nNSR631RF-DA of Guodian Nanrui is an integrated device for the protection, measurement and control of the transformer/grounding transformer used, which realizes the protection, measurement and control, operation and other functions of the transformer/grounding transformer used. NSR631RF-DB is an integrated device for grounding transformer protection, measurement and control.
Product Details
Guodian Nanrui NSR631RF-DA Grounding Transformer Protection and Measurement Device
Function Configuration
The main functions of protection include:1）High voltage side three-stage overcurrent protection;2）High voltage side three-stage zero sequence directional overcurrent protection（NSR631RF-DA）； high-voltage sidethree paragraphsNon grounded system zero sequence directional overcurrent protection（NSR631RF-DB）；3）Low voltage side second sectionZero sequence overcurrent protection;4Overload alarm;5）External non electric input protection.
The main functions of measurement and control include:1）23 Road remote signal input acquisition, device remote signal displacementSOErecord;2）Normal circuit breakerRemote control opening and closing;3）IaTheIbTheIcTheUaTheUbTheUcThePositionTheUabTheUbcTheUcaThe3UoThePaThePbThePcThePTheQTheSTheCOSφTheFrtogether19 Remote measurement;4）EventSOE.
High voltage side three-stage overcurrent protection
NSR631RF-DSet up three-stage overcurrent protection（Instantaneous quick breakISection overcurrentIISection overcurrent protection）Each section has independent current settingsValue, time setting, and control word.
High voltage side zero sequence overcurrent protection
1)three paragraphsZero sequence directional overcurrent protection
Guodian Nanrui NSR631RF-DA Grounding Transformer Protection and Measurement DeviceSet up three zero sequence overcurrent protections, each with independent current and time settings; Zero sequence current can be controlled throughChoose whether to use external connection or self-produced method for character production (set as' self-produced zero sequence current ')0 When, the zero sequence current is connected externallyCTsquareFormula; Set as1 At this time, the zero sequence current is self generated.
Fixed tripping of the first and second stages of zero sequence overcurrent; Zero sequence overcurrent three sections can be selected through control words to trip or alarm ("zero sequenceIIIDuan BaoThe setting for 'protective tripping' is1 When tripped, set to0 When only an alarm is triggered.
The three-stage zero sequence overcurrent can be locked in the direction. Select the grounding method through the control word "neutral point grounding" (set to1 When, it means straightGrounding system or low resistance grounding system; Set as0 When indicating a non grounded system. For ungrounded systems, the directional sensitivity angle is90° (Zero sequence voltage leads zero sequence current)90°）； For the grounding system, the directional sensitivity angle is-110° (Zero sequence voltage lags behind zero sequence currentflow110°).
2)Three segment ungrounded system zero sequence directional overcurrent protection
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