Bushing - Voltage & Current Sensing
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Customized Voltage and Current Sensing Bushing 250A/630A – 17,kV/25kV The Voltage sensor is produced on the basis of capacitive or resistive divider, according to the IEC 61869-11 standard. The current sensor consists of the operating principle of a Rogowski coil. This equipment is totally passive, without the need of power supply. This sensor is applicable in equipment insulated with solid dieletric or SF6, typically transformers and switchgears. The bushing type and design is customized according to needs. The sensors offer alternatives for monitoring, protecting and analyzing network quality. Indoor application. The sensors provide a BNC/RJ45 type connection with the corresponding cable (1m, 2m, 5m, 10m). Easy utilization and installation. Accuracy over complete lifetime INDISOL . Rua de Pardilhó 7 . 3860-529 Estarreja . Portugal . T +351 234 844 494 . geral@indisol.pt .

Customized Voltage and Current Sensing Bushing 250A/630A – 17,kV/25kV VOLTAGE SENSOR PRINCIPLE The basic principle of sensors, with diferente accuracy and transformation classes, is based on the IEC 61869-11 standard The sensors are based, according to customer preference, on the resistive or capacitive divider. The sensor has two elements that divide the input signal in a normed output value. The transformation relationship between the high voltage (pݑ Ȱݑְݑ ) and output voltage (۰ݑ Ȱݑܰݑ°ݑ ) is developed according to the needs. VOLTAGE SENSOR LINEARITY Amplitude error [%] according to table...

Customized Voltage and Current Sensing Bushing 250A/630A – 17,kV/25kV ACCURACY CLASSES FOR HIGH BANDWIDTH D.C APPLICATIONS Depending on the equipment that is connected to the network, it is possible that harmonics are created, distorting the network. The harmonics will depend on the network and voltage level To be possible to monitoring, protecting and analyzing network quality, it is necessary to understand the behavior of the sensor in frequency. Depending on the sensor model, it is possible to obtain the characteristics present in the graphs on the left. Phase displacement [Δϴ°] Phase...

Customized Voltage and Current Sensing Bushing 250A/630A – 17,kV/25kV Equipment connection Fixing points Sealing oring Bushing interface According to the needs, the location of the signal output can be varied, and it is possible to have the output on both sides of the insulation. It is also possible to have different output shape and cable type (we can have the signal output through an integral cable). TECHNICAL CHARACTERISTICS Voltage sensor Current sensor Rated primary voltage* Rated primary current Insulation Level* Rated transformation ratio Rated transformation ratio Accuracy class...