EVT for CGIS and Switchgear Panels / Cubicles with Solid Insulation
EVT-XXC-P Series Electronic Voltage Transformers for installation in interface C cable connectors according to IEC 50181. The integrated design combines the functions of a Cable Connector Insulating Plug and a high-precision measuring device.
Technical Characteristics — EVT-C-P, 100 V
| Parameter | 12 kV | 24 kV | 40.5 kV |
|---|---|---|---|
| Insulation class | 12/42/75 kV | 24/65/125 kV | 40.5/90/195 kV |
| Phase transformation ratio | 12/√3 : 100 V/√3 | 24/√3 : 100 V/√3 | 40.5/√3 : 100 V/√3 |
| 3U0 transformation ratio | 12/√3 : 200 V/3 | 24/√3 : 200 V/3 | 40.5/√3 : 200 V/3 |
| Phase accuracy class | 0.5 | ||
| 3U0 accuracy class | 1 / 3P | ||
| Partial discharge level | ≤10 pC, 1.2 Un | ||
| Load | ≥2 kΩ // ≤500 pF | ||
| Supply voltage | AC/DC 30...240 V | ||
| Output power per channel | 2 VA, up to 15 VA optional | ||
| Frequency | 50/60 Hz | ||
| Rated voltage factor | 1.9 Un, 8 h | ||
| Temperature | −40...+70°C | ||
| Standard | IEC 61869 |
Insulation class
12 kV
12/42/75 kV
24 kV
24/65/125 kV
40.5 kV
40.5/90/195 kV
Phase transformation ratio
12 kV
12/√3 : 100 V/√3
24 kV
24/√3 : 100 V/√3
40.5 kV
40.5/√3 : 100 V/√3
3U0 transformation ratio
12 kV
12/√3 : 200 V/3
24 kV
24/√3 : 200 V/3
40.5 kV
40.5/√3 : 200 V/3
Phase accuracy class
24 kV
0.5
3U0 accuracy class
24 kV
1 / 3P
Partial discharge level
24 kV
≤10 pC, 1.2 Un
Load
24 kV
≥2 kΩ // ≤500 pF
Supply voltage
24 kV
AC/DC 30...240 V
Output power per channel
24 kV
2 VA, up to 15 VA optional
Frequency
24 kV
50/60 Hz
Rated voltage factor
24 kV
1.9 Un, 8 h
Temperature
24 kV
−40...+70°C
Standard
24 kV
IEC 61869
Overall Dimensions and Drawings
Sensor Sizes, EVT-C Series
EVT-12C-01, version 01
EVT-24C-04, version 04
EVT-40.5C-08, version 08
Component Drawings
Connection Diagram
Connection diagram with amplifier-converter, EVT-C-P
Technological Advantages
- High AccuracyMeasuring accuracy reaches class 0.51
- High SafetyThe absence of a core fundamentally eliminates the risk of ferromagnetic resonance2
- Easy IntegrationDirect replacement of Cable Connector Insulating Plugs without equipment modification3
- Compact DesignEfficient use of internal space in GIS and switchgear panels / cubicles4