Product Overview
The FHEPJL12-630-25 extreme-type combined sensor (deep fusion type) conforms to the technical specifications of the State Grid's primary and secondary fusion equipment and is designed and manufactured according to the T/CES018-2019 standard. It integrates circuit breakers, power supply, current, and voltage, suitable for 10kV power systems.
The sensor can simultaneously output zero-sequence voltage and phase current, and zero-sequence current sampling signals. It features low power consumption, high accuracy, and the three-in-one characteristics of measurement, metering, and protection.
Product Features
Voltage Section
● Uses thin-film capacitors, offering good long-term stability and extensive experience in grid operation.
● Features high working current and strong anti-interference capability.
● Low output impedance, adaptable to various cables, overcoming errors caused by cables, with cable exchange error less than 0.1%.
● Features small accuracy changes affected by ambient temperature. Within the full temperature range of -40℃~70℃, the maximum change in error is less than 0.25%, fully meeting the temperature variation index requirements of the standard sensor.
● Offers enhanced safety and anti-interference capability.
● Secondary signals are output through an isolation transformer, providing enhanced safety and anti-interference capability.
Current Section
● Phase current and zero-sequence current are wound with independent coils, and the zero-sequence current is obtained through current synthesis. There are no mutual influence factors between the phase current and zero-sequence current.
● The zero-sequence current output error is less than 1% when the primary current is 1%~120% of the rated current (1A~24A), and less than 10% at 30 times the overcurrent.
● Manufactured using low-temperature drift iron core, the error variation meets standard requirements within the temperature range of -40~70℃, especially at -40℃.
● The zero-sequence output can operate continuously under single-phase 600A current (i.e., 10 times the current).
● Uses low-temperature drift sampling resistors. 100% of the sampling resistors undergo factory aging, ensuring high long-term stability and small resistance changes.
Technical Parameters
Voltage Section
| Parameter | Value |
| Rated Voltage | ● Input side phase voltage: (10kV/√3 )/(3.25V/√3) ● Zero-sequence voltage: (10kV/√3 )/(6.5V/3) (Optional) Output side phase voltage: (10kV/√3 )/(3.25V/√3) |
| Accuracy Class | ● Phase voltage: 0.5 ● Zero-sequence voltage: 3P |
| Ambient Temperature Influence Variation | <0.25% (-40℃~70℃ temperature range) |
| Insulation Resistance | >1000 MΩ |
| Rated Load | 2MΩ (AC) |
| Operating Frequency | 50/60hz |
| Temperature Range | -40℃~70℃ |
| Partial Discharge | ≤20pC |
| Power Frequency Withstand Voltage | 42kV (1min) |
| Impulse Voltage | 85kV |
Current Section
| Parameter | Value |
| Rated Current | ● Phase current: 600A/1V ● Zero-sequence current: 20A/0.2V |
| Accuracy Class | ● Phase current: Protection 5P10 class, metering/measurement 0.5S ● Zero-sequence current: 1S class, protection: 10P30 class |
| Polarity | Reduced Polarity |
| Rated Load | 20kΩ |
| Operating Frequency | 50±2.5Hz |
| Temperature Range | -40℃~70℃ |
| Primary Power Frequency Withstand Voltage | 42kV (1min) |
| Impulse Voltage | 85kV |
Dimensions
Keywords
Pole type combination sensor
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Product Overview
The FHEPJL12-630-25 extreme-type combined sensor (deep fusion type) conforms to the technical specifications of the State Grid's primary and secondary fusion equipment and is designed and manufactured according to the T/CES018-2019 standard. It integrates circuit breakers, power supply, current, and voltage, suitable for 10kV power systems.
The sensor can simultaneously output zero-sequence voltage and phase current, and zero-sequence current sampling signals. It features low power consumption, high accuracy, and the three-in-one characteristics of measurement, metering, and protection.
Product Features
Voltage Section
● Uses thin-film capacitors, offering good long-term stability and extensive experience in grid operation.
● Features high working current and strong anti-interference capability.
● Low output impedance, adaptable to various cables, overcoming errors caused by cables, with cable exchange error less than 0.1%.
● Features small accuracy changes affected by ambient temperature. Within the full temperature range of -40℃~70℃, the maximum change in error is less than 0.25%, fully meeting the temperature variation index requirements of the standard sensor.
● Offers enhanced safety and anti-interference capability.
● Secondary signals are output through an isolation transformer, providing enhanced safety and anti-interference capability.
Current Section
● Phase current and zero-sequence current are wound with independent coils, and the zero-sequence current is obtained through current synthesis. There are no mutual influence factors between the phase current and zero-sequence current.
● The zero-sequence current output error is less than 1% when the primary current is 1%~120% of the rated current (1A~24A), and less than 10% at 30 times the overcurrent.
● Manufactured using low-temperature drift iron core, the error variation meets standard requirements within the temperature range of -40~70℃, especially at -40℃.
● The zero-sequence output can operate continuously under single-phase 600A current (i.e., 10 times the current).
● Uses low-temperature drift sampling resistors. 100% of the sampling resistors undergo factory aging, ensuring high long-term stability and small resistance changes.
Technical Parameters
Voltage Section
| Parameter | Value |
| Rated Voltage | ● Input side phase voltage: (10kV/√3 )/(3.25V/√3) ● Zero-sequence voltage: (10kV/√3 )/(6.5V/3) (Optional) Output side phase voltage: (10kV/√3 )/(3.25V/√3) |
| Accuracy Class | ● Phase voltage: 0.5 ● Zero-sequence voltage: 3P |
| Ambient Temperature Influence Variation | <0.25% (-40℃~70℃ temperature range) |
| Insulation Resistance | >1000 MΩ |
| Rated Load | 2MΩ (AC) |
| Operating Frequency | 50/60hz |
| Temperature Range | -40℃~70℃ |
| Partial Discharge | ≤20pC |
| Power Frequency Withstand Voltage | 42kV (1min) |
| Impulse Voltage | 85kV |
Current Section
| Parameter | Value |
| Rated Current | ● Phase current: 600A/1V ● Zero-sequence current: 20A/0.2V |
| Accuracy Class | ● Phase current: Protection 5P10 class, metering/measurement 0.5S ● Zero-sequence current: 1S class, protection: 10P30 class |
| Polarity | Reduced Polarity |
| Rated Load | 20kΩ |
| Operating Frequency | 50±2.5Hz |
| Temperature Range | -40℃~70℃ |
| Primary Power Frequency Withstand Voltage | 42kV (1min) |
| Impulse Voltage | 85kV |
Dimensions
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