The CVI Series is designed for medium-voltage switchgear and power distribution systems rated 7.2–40.5 kV, 50/60 Hz, providing reliable three-phase voltage indication and phase verification at critical points such as incoming busbars, circuit breakers, and main transformers. The series includes four models with flexible configurations: EP models (CVI-EP / CVI-EPR) use an external 85–265Vac/dc power supply, while SP models (CVI-SP / CVI-SPR) are self-powered from the monitored voltage.
The series provides clear LED voltage indication and phase verification across all four models. EP models feature a self-test function for convenient operational checks, while R models (CVI-EPR / CVI-SPR) provide interlocking relay outputs for remote signaling, control, and protection linkage. This flexible design supports reliable voltage monitoring and safe operation of MV switchgear.
The CVI Series is designed for medium-voltage switchgear and power distribution systems rated 7.2–40.5 kV, 50/60 Hz, providing reliable three-phase voltage indication and phase verification at critical points such as incoming busbars, circuit breakers, and main transformers. The series includes four models with flexible configurations: EP models (CVI-EP / CVI-EPR) use an external 85–265Vac/dc power supply, while SP models (CVI-SP / CVI-SPR) are self-powered from the monitored voltage.
The series provides clear LED voltage indication and phase verification across all four models. EP models feature a self-test function for convenient operational checks, while R models (CVI-EPR / CVI-SPR) provide interlocking relay outputs for remote signaling, control, and protection linkage. This flexible design supports reliable voltage monitoring and safe operation of MV switchgear.
| Parameter | Value |
| Power supply | 85-265Vac/dc |
| Rated voltage | 7.2~40.5 KV |
| Power consumption | Less than 2W |
| Rated frequency | 50-60Hz |
| Light-emitting element | Ultra-high brightness LED, operating voltage < 2.5 VDC, service life > 50,000 hours. |
| Digital output | Passive, dry contact, NO, load capacity: 5A@250VAC |
| Insulation | Input, output, power supply to shell >5MΩ |
| Withstand voltage | 2 kV AC RMS 1 minute, between power supply to ground/ between relay contact to ground. |
| Standards | Compliant with IEC 61243-5:2021 |
| Protection class | IP54 |
| Installation dimension | 96x48x43mm |
| Hole size | 92*44mm |
| Working environment | -25~40°C Altitude ≤2000m,
0~95%RH, non-condensing, non-corrosive gas |
Adaptation capacity parameter table:
| Voltage Level (kV) | 7.2 | 12 | 24 | 40.5 |
| Adaptable Capacitance (pF) | 150(±15) | 115(±15) | 80(±10) | 45(±10) |
| Model | Description |
| CVI-EP | Power supply: 85–265Vac/dc
Function: LED Indication · Self-Test · Phase Sequence Verification |
| CVI-EPR | Power supply: 85–265Vac/dc
Function: LED Indication · Self-Test ·Phase Sequence Verification · Interlocking Relay |
| CVI-SP | Power supply: Self-Powered
Function: LED Indication ·Phase Sequence Verification |
| CVI-SPR | Power supply: Self-Powered
Function: LED Indication ·Phase Sequence Verification · Interlocking Relay |
