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N600 grounding online monitoring device
Category: Product Center
Key words: equipment
Product Description
System Introduction
SubstationDuring normal operation, for several groups of voltage transformer secondary circuits connected through the zero-phase small bus (N600) in the control room, only one point of N600 shall be reliably grounded in the control room, and the secondary neutral point of each voltage transformer shall be disconnected at the grounding point of the switching site. If the secondary neutral point N600 of the voltage transformer in the substation is grounded at multiple points, it may cause the phenomenon of distance protection and zero sequence direction protection refusing or misoperation.
LHTX1306B type voltage transformer secondary neutral point N600 grounding online monitoring device through real-time online capture instantaneous current changes, and analysis, judgment, alarm, accurate realization of substation voltage transformer secondary neutral point N600 grounding wire real-time monitoring, timely detection of security risks, to provide operators with accurate and direct basis for judgment.
Functional features
The N600 ground wire passes through the upper hole of the sensor, does not change the original wiring mode of the N600, does not affect the electrical performance of the original system, and does not cause any potential safety hazard to the equipment in operation.
Built-in high-precision current transformer (external CT), real-time acquisition of current data, analysis;
Using high-speed processor for data processing, high-precision AD conversion chip;
Real-time and accurate monitoring of voltage transformer secondary neutral point N600 grounding current value, and long-distance transmission of data;
RS485 signal can be output;
Main technical parameters
system composition
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