IG-267-EN versión 01; 07/04/2017
51
General Instructions
ekor.rpa
Sensors
6.2. Voltage sensors
6.2.1. Bushing
The cubicle voltage is detected using a capacitor divider
incorporated in the cubicle’s bushings. The following
precisions are ensured, in accordance with the type of
acquisition:
Figure 6.5. Voltage pickup
Bushing
Type
Conventional
Double screen
Standard Calibration on site
Maximum voltage (compound)
40.5 kV
Transformation ratio
10 kV/60 - 100 µA 10 kV/70 - 100 µA
Metering class (together with the equipment)
5 3 1
Protection class (together with the equipment)
6P 6P 6P
Burden
0.0025 – 0.25 mVA
Frequency
50 – 60 Hz
Voltage range (compound)
10 – 40.5kV
IP Grade
IP65
Temperature range
- 10 °C to + 60 °C
Reference standard
IEC 61869-3
IEC 60044-7
Table 6.4. Bushing
Figure 6.6. Zero-sequence toroidal transformer
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