new material
Integrated metering and protection transformers provide precise voltage and current measurement while ensuring reliable fault protection. Designed for industrial power systems and grid applications, they enhance energy monitoring accuracy, safeguard equipment, and optimize operational efficiency.
Product Overview
The Integrated Metering and Protection Transformer adopts the capacitive voltage divider principle. It is a new type of electronic voltage transformer, widely used in 12KV power systems, such as pole-mounted switches, ring main units, circuit breakers, and other equipment. This product integrates both zero-sequence voltage protection and voltage metering functions, offering accurate voltage measurement and protection capabilities.
Features
- Capacitive Voltage Divider Principle: Utilizes the capacitive voltage divider principle, with two sets of capacitors embedded within each transformer to serve both zero-sequence protection and voltage metering purposes.
- High Reliability: Designed in compliance with national standards, ensuring long-term stable operation in various working environments.
- Precise Voltage Measurement: Features high-precision voltage ratios, capable of accurately measuring both zero-sequence and phase sequence voltages.
- Wide Applicability: Suitable for various 12KV power equipment, meeting the protection needs of substations and distribution systems.
- High Voltage Endurance and Anti-interference: Equipped with strong anti-interference and high-voltage endurance, ensuring safe and reliable operation in high-voltage power systems.
- Simplified Installation and Maintenance: Direct signal output simplifies the system structure, reduces error sources, and makes installation and maintenance more convenient.
Applications
- Power System Protection and Metering: Widely used in 12KV power systems such as pole-mounted switches, ring main units, and circuit breakers, providing both zero-sequence voltage protection and voltage metering functionality.
- Substations and Distribution Equipment: As a key component in substations and distribution equipment, it ensures reliable operation and protection of electrical devices.
- Power Monitoring Systems: Suitable for power monitoring and automation systems, enabling online monitoring and fault diagnosis of electrical equipment.
- High Voltage Power Equipment: Ideal for protection and metering in various high-voltage power equipment, ensuring the safety and stability of the power system.
| Item | Value |
| Zero-sequence Voltage Rated Transformation Ratio | 10/√3 KV / (6.5/3) V |
| 8~12KV Voltage Transformation Accuracy | 3P |
| Phase Voltage Rated 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 | 5 PC @ 14.4 KV |
| Withstand Voltage | 42 KV AC, hold for 2 minutes |
| Lightning Impulse Voltage | 75 KV, positive and negative 15 times |
| 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 grounding screw and 2 fixed screws: M10 * 12.5 mm; Zero-sequence and phase signal screws: M6 * 6 mm |
| Skirt Depth | 8.5 mm |
