Product introduction
LJ8C low-voltage intelligent integrated power capacitor is a new generation of reactive power compensation equipment for 0.4kV low-voltage power grid, which can save energy, reduce line loss, improve power factor and power quality. It consists of intelligent measurement and control unit, zero crossing switching unit, protection unit, two (△ type) or one (Y type) low voltage power capacitor. The new generation of low-voltage reactive power compensation equipment has the characteristics of better compensation effect, smaller volume, lower power consumption, lower price, more cost saving, more flexible use, more convenient maintenance, longer service life and higher reliability, which adapts to the higher demand of modern smart grid for reactive power compensation requirement.
Technical parameter
Power supply conditions
Rated voltage: 220 V ~ 380 V
Voltage deviation: ± 20%
Current waveform: current harmonics not more than 10%
Voltage waveform: sine wave, total distortion no more than 5%
Power frequency: 48.5 ～ 51.5hz
Power consumption: < 1W (when the capacitor is cut off), < 1W (when two capacitors are put into operation)
measurement error
Voltage: ≤ 0.5%
Current: ≤ 0.5%
Power factor: ≤± 1.5%
Temperature: ≤ 1 ℃
Protection error
Voltage: ≤ 0.5%
Current: ≤ 0.5%
Reactive power compensation parameters
Reactive power compensation error: ≤ 5% of the minimum capacitor
Reactive power capacity: single ≤ 70kvar (three-phase compensation), ≤ 30kvar (split phase compensation)
No controller: ≤ 32 units Online
With controller: ≤ 24 on-line operation
environment condition
Ambient temperature: - 40 ～ 40 ℃
Relative humidity: 40 ℃, 20-90%
Altitude: ≤ 2000m
Reliability parameters
Control accuracy: 100%
Control allowable times: 1 million times
Electrical safety
Electrical clearance and creepage distance, insulation strength, safety protection, short circuit strength, adoption and control circuit protection all meet the requirements of the power industry standard of the people's Republic of China DL / t842-2003 ≤ service conditions of low voltage shunt capacitor device ≥ and GB / t22582-2008 ≤ power factor compensation device of low voltage power capacitor.
Reactance selection and dimensions (mm)
General product terminal diagram
Simple test device
