Summator
Precise detection of fault currents
Voltage sensors play a central role in modern energy technology, especially in the field of medium-voltage switchgear. These sensors enable precise and safe measurement of electrical voltage without making direct galvanic contact with the main circuit. In contrast to conventional voltage transformers, modern voltage sensors are characterized by their compact design, high measuring accuracy and economic advantages.
Voltage sensors in local network substations fulfill several important functions for safe and efficient network operation:
Grid monitoring and power quality
- Continuous monitoring of the voltage level to ensure compliance with the standard limits (±10% UN)
- Detection of overvoltage and undervoltage
- Monitoring the voltage symmetry between the phases
Switchgear control
- Voltage-free test before switching operations
- Synchronization check for changeovers
- Safe earthing after disconnection
Network automation
- Telecontrol connection to grid control centers
- Automatic fault location and isolation
Documentation and analysis
- Recording of voltage events for grid planning
- Proof of voltage quality
- Long-term analyses for preventive maintenance
Quick links
Our range includes the following voltage sensors & components:
Capacitive voltage coupling
for Wega series in air-insulated switchgear
| C1A2-24 | Cable length [m] | Rated voltage [kV] | Item no. Set |
|---|---|---|---|
|
For mounting on cable terminations Driescher: LDTM-12/24 Driescher: TSL-20 Driescher: TSL-G20 Calor Emag: C2-20 Calor Emag: C3-10/20 F&G: Concordia speaker 12 F&G: EA20 Leukhardt: 10 kV |
4,5 | 12, 24 |
V38-9100-061-001 (without Wega) V38-9100-061-002 (set incl. Wega 1) V38-9100-061-003 (set incl. Wega 2) |
| C1Ix | Voltage [kV] | Item no. |
|---|---|---|
| C1I1-12 | max. 12 | 3 x 48-0101-002 |
| C1I2-24 | max. 24 | 3 x 48-0101-003 |
| C1I3-36 | max. 36 | 3 x 48-0101-004 |
Wega 1 V for capacitive backer C1Ix
| Device set | Item no. |
|---|---|
| 1 integrated voltage test system Wega 1 V |
51-1900-108 |
| 3 Coaxial cable – 3,000 mm | 49-6003-201 |
| 3 Coaxial cable – 5,000 mm | 49-6003-213 |
| 3 Coaxial cable – 6,000 mm | 49-6003-210 |
| 3 Coaxial cable – 7,500 mm | 49-6003-215 |
| 3 Coaxial cable – 10,000 mm | 49-6003-212 |
| 1 Earth connection cable | 49-0511-016 |
Measuring cable sets between capacitive backer C1Ix and Sigma D/ D+/ D++, ComPass B 2.0, ComPass Bs 2.0
| Capacitive support | Nominal voltage | Input Indicator | Cable length | Item no. |
|---|---|---|---|---|
| C1I1-12 (PSA 10) | 10 kV | AMP | 8,000 mm | 49-0509-245 |
| C1I2-24 (PSA 20) | 20 kV | AMP | 4,000 mm | 49-0509-246 |
Measuring cable sets between capacitive back-up C1Ix and ComPass B
| Capacitive support | Nominal voltage | Input Indicator | Cable length | Item no. |
|---|---|---|---|---|
| C1I1-12 (PSA 10) | 10 kV | 4-pole Series plug |
2,000 mm | 49-0509-061 |
| C1I2-24 (PSA 20) | 20 kV | 4-pole Series plug |
2,000 mm | 49-0509-062 |
Resistive voltage sensors for high-precision voltage measurements
for ComPass B 2.0 series
Connection cable 2-pole shielded with plug connector, coupling connector and terminating resistor
For gas-insulated switchgear
| C1A2-24 | Cable length [m] | Rated voltage [kV] | Item no. Set |
|---|---|---|---|
|
For mounting on cable terminations Driescher: LDTM-12/24 Driescher: TSL-20 Driescher: TSL-G20 Calor Emag: C2-20 Calor Emag: C3-10/20 F&G: Concordia speaker 12 F&G: EA20 Leukhardt: 10 kV |
4,5 | 12, 24 |
V38-9100-061-001 (without Wega) V38-9100-061-002 (set incl. Wega 1) V38-9100-061-003 (set incl. Wega 2) |
Other encoders and sensors
Phase current encoder
Phase current sensors
Summator
