Product Overview
EVKFI-10 series voltage sensor is a new type of high-voltage phase sequence and zero sequence protection sensor, mainly used in inflatable ring main units.The sensor is powerful, and the small signal output does not require secondary PT conversion. It can be directly connected to the secondary equipment through A/D conversion, which meets the development requirements of "integrated automation system of substation" and "digitalization, intelligence and networking". This series of voltage sensors adopts the principle of resistance voltage division and epoxy resin casting.
Product Features
● Directly outputs a small voltage signal, simplifying the system structure and reducing error sources;
● Contains no iron core (or contains a lightly loaded small iron core), will not saturate, has a wide frequency response range, large measurement range, and good linearity. Under system fault conditions, it allows the protection device to operate reliably;
● When the voltage output terminal is short-circuited, no overcurrent will be generated, nor will ferromagnetic resonance occur. This eliminates major fault risks in power system operation and ensures the safety of personnel and equipment;
● Multi-functional, small size, light weight, low energy consumption, and reduced ferromagnetic pollution;
● According to user needs, zero-sequence voltage can be directly output, or phase sequence voltage can be output, and zero-sequence voltage can be synthesized through the control device.
Technical Parameters
Voltage Section
| Parameter | Value |
| Rated Voltage | ● Phase voltage: (10kV/ √ 3 )/(6.5V/ √ 3) ● Zero-sequence voltage: (10kV/ √ 3 )/(13V/3) |
| Accuracy Class | 1/3P Class |
| Environmental Temperature Influence Variation | < 0.5% (-25℃ ~40℃ temperature range) |
| Insulation Resistance | >1000 MΩ |
| Rated Load | 2MΩ (AC) |
| Operating Frequency | 50±2.5hz |
| Temperature Range | -40℃~70℃ |
| Partial Discharge (1.2um) | ≤20pC |
| Power Frequency Withstand Voltage | 42kV (1min) |
| Impulse Voltage | 75kV |
Dimensions
Keywords
Voltage Sensor
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Product Overview
EVKFI-10 series voltage sensor is a new type of high-voltage phase sequence and zero sequence protection sensor, mainly used in inflatable ring main units.The sensor is powerful, and the small signal output does not require secondary PT conversion. It can be directly connected to the secondary equipment through A/D conversion, which meets the development requirements of "integrated automation system of substation" and "digitalization, intelligence and networking". This series of voltage sensors adopts the principle of resistance voltage division and epoxy resin casting.
Product Features
● Directly outputs a small voltage signal, simplifying the system structure and reducing error sources;
● Contains no iron core (or contains a lightly loaded small iron core), will not saturate, has a wide frequency response range, large measurement range, and good linearity. Under system fault conditions, it allows the protection device to operate reliably;
● When the voltage output terminal is short-circuited, no overcurrent will be generated, nor will ferromagnetic resonance occur. This eliminates major fault risks in power system operation and ensures the safety of personnel and equipment;
● Multi-functional, small size, light weight, low energy consumption, and reduced ferromagnetic pollution;
● According to user needs, zero-sequence voltage can be directly output, or phase sequence voltage can be output, and zero-sequence voltage can be synthesized through the control device.
Technical Parameters
Voltage Section
| Parameter | Value |
| Rated Voltage | ● Phase voltage: (10kV/ √ 3 )/(6.5V/ √ 3) ● Zero-sequence voltage: (10kV/ √ 3 )/(13V/3) |
| Accuracy Class | 1/3P Class |
| Environmental Temperature Influence Variation | < 0.5% (-25℃ ~40℃ temperature range) |
| Insulation Resistance | >1000 MΩ |
| Rated Load | 2MΩ (AC) |
| Operating Frequency | 50±2.5hz |
| Temperature Range | -40℃~70℃ |
| Partial Discharge (1.2um) | ≤20pC |
| Power Frequency Withstand Voltage | 42kV (1min) |
| Impulse Voltage | 75kV |
Dimensions
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No. 95, West Section, Century Road, Pulandian District, Dalian City, Liaoning Province
