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NGD-830Harmonic line selection protection device
Harmonic elimination NGD-830 line protection device is a comprehensive protection set arc suppression, elimination, line selection and over voltage protection functions such as device, this device is the use of computer, over voltage protection, measuring and communication, vacuum switch and high energy Zinc Oxide varistor technologies such as the composition of a set of automatic control device for resonance. Over voltage and phase arc grounding over voltage limits and eliminate, and provide a sensitive, reliable single-phase grounding protection. Such as system arc grounding, the device can act quickly, so that the arc fault point immediately extinguished, reduce the system due to the effects of arc grounding and produces, action and send out alarm signals and display the corresponding fault phase information. In order to effectively improve the power grid running safety and reliability of power supply.
System parameters
Rated voltage: 10 kV
Maximum system voltage: 12KV
Rated frequency: 50Hz
Rated short-circuit breaking current: 50 kA
The neutral point grounding mode: not grounding
System capacitive current to ground: ≤ 80A
The DC operation power supply voltage: DC220V
Rated dynamic stability current: 80kA (peak) 31.5kA (4 seconds)
Controller: power loss ≤ 30W
Communication interface: RS-485 (232), the rate of the default 4800bps, the other requirements when ordering.
Communication protocols: MODBUS protocol
The operation of power: DC220V (or according to the actual situation on site)
The response time of line selection: 1S
Line selection way: no 32 road condition, can choose.
Environmental conditions
The use of places: no acid and alkali corrosion, inflammable and explosive place, no violent vibration
Environment temperature: -25 ℃ ~ +45 ℃
The maximum daily temperature: 30 ℃
Altitude: ≤ 2000m
Relative humidity: daily average relative humidity of not more than 95%
Monthly average relative humidity of not more than 90%
Pollution level: IP4X
Earthquake intensity: 8 degrees
Creepage distance: 31mm/kV
Sunshine intensity: 0.1 W/cm2 (wind speed 0.5m/s)
The maximum wind speed: 30 m/s (10m from the ground, 10 min average value)
Ice thickness: 10 mm, the maximum snow depth: 90 mm
Product features
The comprehensive protection of lightning, operation, phase, phase, over voltage, the system does not produce transient over-voltage harm;
The system of all kinds of overvoltage limitation in the lower voltage level, due to make insulation accident caused by over voltage are greatly reduced;
15ms rapid elimination of arc grounding fault, identify type arc grounding correctly;
Because of the size independent of capacitance current of arc suppression and restriction mechanism and grid voltage, the protective performance is not affected by the change of power grid operation mode and grid expansion
Big impact;
Can effectively prevent the electrical equipment insulation due to repeated over voltage or long time effects of the reduced;
Automatic distinguishing and eliminating frequency resonant, high-frequency resonance frequency, resonance, the ferromagnetic resonance overvoltage occurrence possibility is reduced;
Intermittent grounding, metallic grounding, PT disconnection fault accident, display properties and phase don ist, and outputs the fault state;
The voltage transformer of the device can be voltage signal device to meter and relay protection system, can replace the conventional PT cabinet;
Long service life, can reach more than 30 years.
Rated voltage: 10 kV
Maximum system voltage: 12KV
Rated frequency: 50Hz
Rated short-circuit breaking current: 50 kA
The neutral point grounding mode: not grounding
System capacitive current to ground: ≤ 80A
The DC operation power supply voltage: DC220V
Rated dynamic stability current: 80kA (peak) 31.5kA (4 seconds)
Controller: power loss ≤ 30W
Communication interface: RS-485 (232), the rate of the default 4800bps, the other requirements when ordering.
Communication protocols: MODBUS protocol
The operation of power: DC220V (or according to the actual situation on site)
The response time of line selection: 1S
Line selection way: no 32 road condition, can choose.
Environmental conditions
The use of places: no acid and alkali corrosion, inflammable and explosive place, no violent vibration
Environment temperature: -25 ℃ ~ +45 ℃
The maximum daily temperature: 30 ℃
Altitude: ≤ 2000m
Relative humidity: daily average relative humidity of not more than 95%
Monthly average relative humidity of not more than 90%
Pollution level: IP4X
Earthquake intensity: 8 degrees
Creepage distance: 31mm/kV
Sunshine intensity: 0.1 W/cm2 (wind speed 0.5m/s)
The maximum wind speed: 30 m/s (10m from the ground, 10 min average value)
Ice thickness: 10 mm, the maximum snow depth: 90 mm
Product features
The comprehensive protection of lightning, operation, phase, phase, over voltage, the system does not produce transient over-voltage harm;
The system of all kinds of overvoltage limitation in the lower voltage level, due to make insulation accident caused by over voltage are greatly reduced;
15ms rapid elimination of arc grounding fault, identify type arc grounding correctly;
Because of the size independent of capacitance current of arc suppression and restriction mechanism and grid voltage, the protective performance is not affected by the change of power grid operation mode and grid expansion
Big impact;
Can effectively prevent the electrical equipment insulation due to repeated over voltage or long time effects of the reduced;
Automatic distinguishing and eliminating frequency resonant, high-frequency resonance frequency, resonance, the ferromagnetic resonance overvoltage occurrence possibility is reduced;
Intermittent grounding, metallic grounding, PT disconnection fault accident, display properties and phase don ist, and outputs the fault state;
The voltage transformer of the device can be voltage signal device to meter and relay protection system, can replace the conventional PT cabinet;
Long service life, can reach more than 30 years.
