Intelligent Reactive Power Compensation Controller
9CK-EC
The EC series intelligent reactive power compensation controller is a new type of power distribution measurement and control equipment that integrates data acquisition, reactive power compensation, and power grid parameter analysis. It is suitable for monitoring and reactive power compensation control of AC 0.4KV, 50Hz low-voltage power distribution systems.
The EC series intelligent reactive power compensation controller uses a high-speed digital signal processor as its core and employs high-precision AC sampling. Its human-machine interface is a 128×64 dot-matrix large-screen LCD display. It features functions such as power distribution monitoring, reactive power compensation, harmonic analysis, and frequency adaptation.
Operating Conditions:
Air Temperature: Air temperature not exceeding +65℃ and not lower than -25℃.
Atmospheric Conditions: Air humidity not exceeding 90% at 20℃; higher relative humidity is permissible at lower temperatures.
Altitude: Not exceeding 2500 meters.
Environmental Conditions: The surrounding medium is free from flammability and explosion hazards, corrosive gases, conductive dust, and rain/snow corrosion; the installation site must not experience severe vibration.
Terminal Functions:
1. Real-time Data Monitoring
Voltage, current, and power factor of phases A, B, and C
Centric capacitor bank switching status of phases A, B, and C
Active power and reactive power of phases A, B, and C
Total harmonic distortion (THD) of voltage and current of phases A, B, and C
2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, 14th, and 15th order voltage harmonic content of phases A, B, and C
2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, 14th, and 15th order current harmonic content of phases A, B, and C
Note: When the above is set to common compensation mode, some sampled data only displays phase A.
2. Reactive Power Compensation
Y-type compensation
Δ-type compensation
Y+Δ combined compensation
3. Protection Functions
Self-test reset and automatic reset functions.
Undervoltage and overvoltage protection functions.
It features low current protection.
It features total harmonic distortion (THD) protection.
power supply voltage | AC 38 0V±20% |
Sampling voltage | AC 220V±20% |
Power frequency | 50Hz±2% |
Sampling current | 0A～5A |
1. Measurement accuracy
Voltage | ±1% |
Current | ±1% |
Active power | ± 2.5 % |
reactive power | ± 2.5 % |
Power factor | ±1.5% |
2. Set parameters
Parameter name | initial value | Parameter range | Detailed Explanation |
Compensation parameters | | | |
CT ratio | 0001 | 1 to 2,000 | Current transformer ratio of incoming line cabinet: If the transformer ratio is 500:5, then this unit is set to 100 (using the ratio). |
Investment threshold | 0.9 2 | 0.80 ~ 1.00 | The set value represents the input threshold value. |
Removal threshold | 0.99 | 0.9 to -0.81 | The set value represents the cutoff threshold value. |
Delayed input | 010.00 | 5～ 250 | Delay time setting: e.g., 10 means 10 seconds. |
Delayed resection | 005.00 | 5～ 250 | Removal delay time setting: e.g., 5 is 5 seconds |
Overvoltage protection | 260.0 | 240 ~ 280 | Overvoltage protection: When the mains voltage exceeds a set value, the capacitor is disconnected. |
Overvoltage alarm | 2 45.0 | 220 ~ 260 | Overvoltage alarm: The current voltage alarm is displayed; the current capacitor state is maintained. |
Undervoltage protection | 2 08.0 | 170 ~ 220 | Undervoltage protection: When the mains voltage is lower than the set value, the capacitor is disconnected. |
Undercurrent protection | 0 100 | 50 ~ 1000 | Undercurrent protection: For example, 0 100 represents 100 mA . When the current is less than the set value, the capacitor is disconnected. |
Harmonic protection | 05.0 | 2 ~ 60 | Voltage harmonic protection: When the total harmonic distortion of the mains voltage exceeds a set value, the capacitor is disconnected. |
Debug mode | normal | Normal/Simulation | Switching between automatic and simulated casting. |
Wiring mode | Mixed supplement | Mixed supplementation/co-supplementation | Switch between mixed compensation and common compensation modes (pay attention to the controller wiring after switching). |
Function Deactivation | / | | |
Overvoltage protection | / | Investment/Exit | Set to enable the feature, set to disable the feature. |
Overvoltage alarm | / | Investment/Exit | Set to enable the feature, set to disable the feature. |
Undervoltage protection | / | Investment/Exit | Set to enable the feature, set to disable the feature. |
Undercurrent protection | / | Investment/Exit | Set to enable the feature, set to disable the feature. |
Harmonic protection | / | Investment/Exit | Set to enable the feature, set to disable the feature. |
