EVT/ZW32-10 Zero Sequence Voltage Sensor
Product Model
Technical Parameters
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Category |
Project indicators |
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Rated voltage |
10kV/√3 |
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Rated secondary output voltage |
3.25V/√3(Phase sequence) |
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Accuracy |
0.5(Voltage phase sequence) |
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Rated load |
2MΩ |
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Rated frequency |
50Hz |
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Insulation level |
12/42/75kV |
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Partial Discharge |
10pC |
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Working environment |
Environment temperature |
-40℃~+70℃ |
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Daily average does not exceed |
40℃ |
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Altitude |
<1000m |
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Relative temperature |
<90% |
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Maximum wind speed |
34m/s |
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Outline Dimension
Wiring Principle Diagram
Product Functions
◆Provides precise zero sequence voltage measurement for system grounding fault detection and protection.
◆Delivers small signal output compatible with digital secondary equipment, eliminating the need for secondary PT conversion.
◆Supports direct integration with protection relays and monitoring devices through standard A/D interfaces.
◆Enhances the accuracy and reliability of grounding fault identification in medium-voltage distribution networks.
Applicable Environment
◇Designed for outdoor installation, compatible with outdoor vacuum circuit breakers.
◇Suitable for use in 10kV distribution networks and substation automation systems.
◇Ideal for applications requiring digital, intelligent, and networked monitoring in modern power grids.
Product Highlights
◆Direct Digital Interface: Small signal output enables direct connection to secondary digital equipment without additional PT conversion, simplifying system design.
◆High Accuracy & Reliability: Ensures precise zero-sequence voltage measurement for effective grounding fault protection.
◆Outdoor Durability: Built to withstand harsh outdoor environments, ensuring stable long-term performance.
◆Supports Grid Modernization: Fully aligns with the development needs of digital, intelligent, and networked substation automation.
◆Customizable Design: Can be tailored to specific technical or application requirements through manufacturer consultation.
Installation Instructions
◇Ensure compatibility with the target outdoor vacuum circuit breaker and system voltage (10kV).
◇Confirm the required technical parameters, voltage ratio and accuracy class, before ordering.
◇Mount the sensor securely in the designated position on the circuit breaker or support structure, following outdoor electrical installation standards.
◇Connect the small signal output cables directly to the secondary digital equipment via the appropriate A/D interface.
◇Verify all connections and perform functional testing before commissioning. For special requirements, provide detailed specifications to the manufacturer when ordering under model EVT/ZW32-10.