Table 1 Key technical parameters
JKF8 smart low-voltage reactive power automatic compensation controller (hereinafter referred to as
controller) is designed for reactive power compensation in low voltage power distribution systems. By
compounding controlling of physical variables (reactive power and power factor), the product enables
automatic capacitor switching, power factor improvement and line reactive power loss reduction. It is easy
for operation and reliable, with complete functions and strong anti-interference capability. The product
complies with JB/T9663 standard and can correctly display grid power factor under harmonic environment.
Use Purpose
1
Type Key and Definitions
Key Technical Parameters
2
Rated frequency: 60Hz, no this option for default 50Hz
Rated voltage: 220VAC, 240VAC, 380VAC, 440VAC
Output circuit specification: 6, 12
Product design serial number
Control of physical variables: compound
Low-voltage reactive compensation controller
JK F 8 □ □ □
Environm
ental
condition
s
Ambient temp.
(℃)
-25℃~+70℃
Hot and humid
atmospheric
conditions
50% relative humidity at +40℃; up to 90% at +20℃;
Altitude
≤2000m, (take ventilation, heat dissipation and anti-condensation measures for
altitude above 2000m)
Pollution
class/installation
category
Free from hazardous gases and vapors, conductive or explosive dusts, and strong
mechanical vibration
Functions
Control strategy
Compound control of reactive power and power factor, ensuring reliable
switching under low load and preventing resonance during switching.
Display
code
Non-
polarized current
Self-identifying of current polarity, no direction requirement for IS1 and
IS2 sampling lines.
Undervoltage
protection
Automatically removes capacitor banks in operation level by level (in 5
seconds) when grid voltage is lower than 0.78UN and displays voltage
value.
≡U
Overvoltage
protection
Automatically removes capacitor banks in operation level by level (in 5
seconds) when grid voltage higher than overvoltage threshold and
displays voltage value.
≡U
Undercurrent
protection
Automatically removes capacitor banks in operation level by level (in 5
seconds) and lock-up capacitor adding when the secondary signal of the
current transformer is lower than 150ｍA.
≡1
JKF8 SeriesSmart Low-Voltage Reactive Power Compensation Controller
01
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