The CVI-2R is an integrated capacitive voltage indicator for medium-voltage switchgear applications. It provides continuous voltage presence indication and voltage absence verification in accordance with IEC 62271-213:2021. The device supports dual-stage voltage indication and overvoltage indication to improve operational safety during switching and maintenance procedures.
The front panel features two LED indicators and two dedicated pushbuttons for self-test and voltage presence verification. An adjustable capacitance module (C2) is provided to optimize the capacitive voltage division ratio. Two relay outputs are available for alarm, interlock, and remote indication applications. With a compact 96 × 48 mm design and a wide auxiliary power supply range of 85–265 Vac/dc, the CVI-2R is suitable for various switchgear installations.
The CVI-2R is an integrated capacitive voltage indicator for medium-voltage switchgear applications. It provides continuous voltage presence indication and voltage absence verification in accordance with IEC 62271-213:2021. The device supports dual-stage voltage indication and overvoltage indication to improve operational safety during switching and maintenance procedures.
The front panel features two LED indicators and two dedicated pushbuttons for self-test and voltage presence verification. An adjustable capacitance module (C2) is provided to optimize the capacitive voltage division ratio. Two relay outputs are available for alarm, interlock, and remote indication applications. With a compact 96 × 48 mm design and a wide auxiliary power supply range of 85–265 Vac/dc, the CVI-2R is suitable for various switchgear installations.
| Parameter | Value |
| Power supply | 85-265Vac/dc |
| Rated voltage | 7.2~40.5 KV |
| Power consumption | Less than 2W |
| Voltage threshold | 10% to 45%Un |
| Rated frequency | 50-60Hz |
| Relay output | 2 channel, passive, dry contact, normally open
Load capacity: 10A @250Vac/5A@ 30Vdc |
| LED indicator | 2* Ultra-high brightness LED
operating voltage < 2.5Vdc, service life > 50,000 hours. |
| 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 62271-213 |
| Installation dimension | 96×48 |
| Working environment | -25~70°C, Altitude ≤2000m,
0~95%RH, non-condensing, non-corrosive gas |
The device is based on a capacitive voltage detecting system (VDIS), the phase conductors of the medium-voltage network are coupled via a capacitive voltage divider. The coupling unit (C1) picks up an electric field proportional to the primary system voltage and transmits a low-energy signal through a shielded coaxial cable to the indicator unit.
The indicator (C2) processes the coupled signal and provides phase-wise voltage presence indication, including voltage present, nominal voltage present, and overvoltage conditions. The system operates without galvanic connection to the high-voltage circuit, providing reinforced isolation through capacitive coupling principles.
