new material
The 10KV phase-sequence metering transformer is a high-precision electrical measurement device designed for accurate phase sequence detection, voltage monitoring, and energy metering. It ensures reliable performance, optimized grid stability, and long-term operational efficiency in industrial power systems.
Product Overview
The 10KV Phase-sequence Metering Transformer is an electronic voltage transformer designed using the capacitive voltage divider principle. It is widely used in 12KV pole-mounted switches, ring main units, circuit breakers, and other switchgear for phase-sequence voltage metering. The transformer complies with the integration technology requirements for primary and secondary systems specified by the State Grid Corporation of China and has independent intellectual property rights. It is a high-performance, reliable new type of voltage transformer specifically designed for power systems.
Features
- High-Precision Transformation Ratio: Provides high-precision transformation ratios within the 8-12KV voltage range, ensuring accurate metering.
- Versatile Application: Can be used for both phase-sequence voltage metering and as a protective transformer, meeting the dual needs of voltage measurement and protection in power systems.
- High Voltage Endurance: Has excellent voltage endurance, capable of withstanding a 42KV AC voltage test, ensuring stability in high-voltage environments.
- Strong Reliability: Designed with lightning impulse voltage tolerance, suitable for complex operating conditions in power systems.
- Environmental Adaptability: Operates in a wide temperature range from -40℃ to +70℃, suitable for extreme environments.
- Compact Design: The product features a compact size, easy to install, and is ideal for use in power equipment with limited space.
Applications
- Power Substations: Used in substations as voltage metering and protection devices.
- Power System Automation: Widely used in power system automation equipment, providing accurate phase-sequence voltage metering.
- Ring Main Units and Pole-mounted Switches: Commonly found in voltage measurement systems in ring main units and pole-mounted switches, ensuring the stable operation of the system.
- Circuit Breaker Systems: Used for voltage metering in power circuit breakers, ensuring the normal operation of protection and control functions.
- High-voltage Power Equipment: Suitable for voltage metering and protection in various high-voltage power equipment, enhancing the safety and stability of power systems.
| Item | Value |
| Voltage Transformation Accuracy | 3P |
| Rated Voltage Transformation Ratio | 10/√3 KV / 3.25/√3 V |
| 8~12KV Voltage Transformation Accuracy | 0.5 |
| Operating Temperature Range | -40℃ ~ +70℃ |
| Rated Frequency | 50 Hz |
| Rated Load | 5.1 MΩ |
| System Rated Voltage | 10 KV / 12 KV |
| Partial Discharge | 5PC @ 14.4 KV |
| Withstand Voltage | 42 KV AC, hold for 2 minutes |
| Lightning Impulse Voltage | 75 KV, 15 times positive and negative |
| Power Frequency Requirement | 48 KV @ 1 min |
| Diameter | 78 mm |
| Height | 120 mm |
| High Voltage Input Side Screw | M8*8 mm |
| Low Voltage Output Side | 1 ground and 2 fixed screws: M10*12.5 mm |
| Zero-sequence and Phase Sequence Signal Screw | M6*6 mm |
| Skirt Depth | 8.5 mm |
