Smart Power Factor Correction
Product Description
Power electronics three-phase load imbalance automatic regulation device uses advanced power electronic technology and automatic control technology, different from the traditional capacitor, reactor passive scheme, the use of active scheme to comprehensively solve the power quality problems such as three-phase load imbalance, reactive power, harmonics, especially suitable for low-voltage distribution column transformer power quality comprehensive control field

Ordering instruction
SN | Item | Ordering instruction |
1. | YT-LCD Human Machine Interface | 1. The LCD HMI Human Machine Interface is a 7-inch touch LCD screen, which can be used for module parameter setting, data viewing and other functions. |
2. | Communication Method | 1. Device standard communication configuration: one channel RS485, one channel Bluetooth. (Bluetooth for mobile APP debugging) 2. Optional module: GPRS. |
3. | Mounting bracket | 1. SPC has two modes of column installation and ground installation, both of which require corresponding installation brackets. The mounting bracket is not a standard accessory, and can be purchased separately when customers need it. |
4. | Power cable | 1. The connecting cable between the device and the transformer is not a standard part, and is purchased separately when the customer needs it. |
5. | Current transformer | 1. External sampling current transformer is not standard configuration, and can be purchased separately when customers need it.
2. Current transformer split/closed type, indoor/outdoor type, open/closed type price difference is relatively large, need to pay attention to purchase. |
Parameters indicators
Electrical parameter | Voltage level | The standard voltage is 400V |
Operating frequency | 50Hz ±5Hz | |
Electrical connection | Three-phase four-wire (standard)/three-phase three-wire (customizable) | |
Functional parameter | Compensation mode |
Three phase load imbalance compensation,reactive power compensation and harmonic compensation,you can set one or more compensation methods |
Three-phase unbalance compensation | Active current imbalance ≤5% | |
Reactive power compensation effect | Reactive power compensation rate ≥98% | |
Filter range | 2 ~ 50 harmonics (number can be selected) | |
Filtering effect | Harmonic filtering rate ≥95% | |
Response time | < 5ms | |
System active power loss | 3% | |
Communication mode | Standard configuration: 1 RS485,1 Bluetooth, Modubus protocol | |
Structural characteristic | Cooling mode | Adjustable speed intelligent fan |
Class of protection | IP42 | |
noise | < 60dB | |
Installation mode | Pole mount or floor mount | |
Ambient Temperature | -20 ~ 55℃ |
Environmental requirement | temperature | |
Relative humidity | Max 95%, no condensation | |
Installation elevation | ≤ 1500m, greater than 1500m, appropriate capacity reduction | |
Heat dissipation mode | Forced air cooling | |
Air in/air out mode | Air in on the left side, air out on the right side |
Specifications and models
Module parameters
Type | Capacity | Voltage level | Type of connection | Harmonic function | Dimension (W*H*D)mm | Weight kg |
YT-SP-1000/30-4-4L-A1 | 30kvar | 400V | 3P4W | Yes | 770x955x390 | 60kg |
YT-SPC-1000/50-4-4L-A1 | 50kvar | 400V | 3P4W | Yes | 770x955x390 | 65kg |
YT-SPC-1000/75-4-4L-A1 | 75kvar | 400V | 3P4W | Yes | 770x955x390 | 90kg |
YT-SPC-1000/100-4-4L-A1 | 100kvar | 400V | 3P4W | Yes | 770x955x390 | 110kg |
Instructions:
1) Default configuration: no LCD screen, 1 RS485+ Bluetooth module. 2) -A0: no harmonic function. 3) External current transformers, power cables, and mounting brackets are not standard accessories and need to be ordered separately. |
Dimensions drawing

Installation diagram


SPC parts selection table
SPC parts selection table
SPC Capacity | Circuit breaker Rated current | Power Cable(mm2) | CT Twisted pair | Current transformer (External sampling CT) | |||
A/B/C Phase | N | PE | Installation distance | Cross area | |||
30kvar | 80A | 25 | 25 | 16 | 1) The CT primary current is selected | ||
50kvar | 125A | 35 | 35 | 16 | |||
75kvar | 160A | 50 | 50 | 16 | ≤20m
≥20m |
2.5mm2 4.0mm2 | according to the rated capacity of the
transformer (KVA) of 2 to 2.5 times. 2) When selecting CT, attention must be paid to the installation of the internal diameter, external size and busbar size of the current transformer. |
100kvar | 250A | 70 | 70 | 35 | |||
125kvar | 250A | 95 | 95 | 50 | |||
150kvar | 350A | 120 | 120 | 70 | |||
175kvar | 400A | 150 | 150 | 95 | |||
200kvar | 400A | 185 | 185 | 95 | |||
Instructions: 1. The cross-sectional area of the power cable is based on the carrying capacity of the YJV cable in the air. |
SPC typical design scheme


Design description:
1) The sample CT is generally installed on the load side (as shown above), and can also be installed on the power side (left side of the SPC access point).
2) The SPC is a high-power device, and the ventilation on the inlet/outlet side must be smooth.
Technical Parameter
Rated Voltage | 220V(155-259V) 400V(296-465V) 480V(346-516V) |
|
Rated Current | 30-100kvar/15-150A 30-100kvar/15-150A 50-150A | |
Main Frequency | 50/60Hz±5% | |
Circuit Topology | Three-level | |
Compensation Modes | Harmonic/reactive power/three-phase load imbalance compensation | |
Filter Range | 2 to 51 odd harmonics (selective or fully compensated) | |
Harmonic Reduction Rate | Filtering range 2 to 25th harmonic,100%of rated capacity (selectively or fully) | |
Filtering Performance | ≥97% | |
Target Power Factor | Adjustable rangefrom -1.0 to +1.0 | |
Three-Phase Load Balancing | ≤5%to mitigate negative and zero sequence currents | |
Linear Filtering Capability | 3 times rated filter current (in case of 4-wire equipment) | |
Switching/Control Frequency | 25.6kHz | |
Initial Response Time | ≤50us | |
Total Response Time | ≤5ms | |
System Effective Loss | ≤2.5% | |
Output Current Control | Automatically limited to 100%output of rated capacity | |
Control Algorithm |
FFT,Adaptive Control Algorithm,Fast Fourier &Instant Reactive Power Algorithms |
|
Controller | DSP+FPGA | |
Protection | Hardware protection,software protection | |
Control Connections | Electrical Connections | |
Human Machine Interface | 4.3-inch/7-inch/10-inch touchscreen TFT LCD HMI | |
Noise | <60db(<45db at low speed operation) | |
Installation method | Module embedded (rack),wall-mounted,floor-mounted | |
Protection level | IP42 | |
Cooling method | Speed control intelligent air-cooled PWM fan | |
Colour | RAL 7035 Industrial Grey/Black | |
Ambient Temperature | -20~55℃ | |
Relative Humidity | 95%max,no condensation | |
Altitude | Rated capacity at altitude ≤2000m,reduced capacity at altitude >2000m | |
Certification | CE,IEEE61000,Type Test Report,ISO9001:2015 | |
Standards Compliance | IEEE 519,ERG5/4 | |
Communication Protocol | Adopts Modbus RTU remotecommunication protocol and TCP/IP protocol;Two channel RS485 and CAN bus,support mobile APP operation,support Ethernet |
Cases-Onsite


Factory-Production

