HYSPC three-phase load imbalance automatic adjustment device

Short Description:

1. The device filters over 90% of the zero sequence current and controls the three-phase imbalance within 10% of the rated capacity

2. Low thermal loss (≤3% rated power), efficiency ≥ 97%

3. Mainly used in low voltage distribution networks with imbalanced three phase

Product Detail

Product Tags


Three-phase imbalances are common in low voltage distribution networks. Due to the existence of a large number of singlephase loads in urban and rural networks, the current imbalance between the three phases is particularly serious.

The current imbalance in the power grid will increase the loss of the line and transformer, reduce the output of the transformer, affect the operation safety of the transformer, and cause zero drift, resulting in three-phase voltage imbalance, and reduce the quality of power supply. In view of the above situation, our company have developed three-phase unbalanced automatic regulation device for the purpose of optimizing power quality and realizing energy conservation and emission reduction.

The device filters over 90% of the zero sequence current and controls the three-phase imbalance within 10% of the rated capacity.

Model and Meaning

HY SPC - - /
1 2 3 4 5 6 7
No. Name Meaning
1 Enterprise code HY
2 Product type three phase imbalanced regulation
3 Capacity 35kvar、70kvar、100kvar
4 Voltage level 400V
5 Wiring Type 4L: 3P4W      3L: 3P3W
6 Mounting type outdoor
7 Door opening mode No marked: the default is front door opening, wall mounted installation; Side door opening, plug-in three-phase four wire installation must be specified
* Note: The parameters and dimensions of HYSPC module and HYSVG module on page 25 are the same

Technical Parameters

Normal working and installation conditions
Ambient temperature -10℃ ~ +40℃
Relative humidity 5%~ 95%,no condensation
Altitude ≤ 1500m,1500~3000m (derating 1% per 100m) according to GB / T3859.2
Environmental conditions no harmful gas and steam, no conductive or explosive dust, no severe mechanical vibration
Outdoor installation At least 15cm space should be reserved for the upper and lower air outlets of the module, and at least 60cm

space should be reserved for the front and rear of the cabinet for easy maintenance.

Relative humidity Relative humidity:When the temperature is + 25 ℃ , the relative humidity can reach 100% in a short time
System parameters  
Rated input line voltage 380V (-20% ~ +20%)
Rated frequency 50Hz ( 45Hz ~ 55Hz)
Power grid structure 3P3W/3P4W (400V)
Current transformer 100/5 ~ 5,000/5
Circuit topology three-level
Overall eifficiency ≥ 97%
Standard CQC1311-2017、DL/T1216-2013、JB/T11067-2011
Three-phase balance compensation capability Imbalance < 3%
Target power factor 1, Response time < 10ms
Reactive power compensation rate > 99%
Protective function Over-voltage protection, under-voltage protection, short-circuit protection, over-current protection, over

temperature protection, drive fault protection,lightning protection

Power distribution function With C-level lightning protection function
Communication monitoring capability
Display content Real-time operating information such as voltage, current, power factor, and operating temperature
Communication interface Standard RS485 interface, optional wifi or GPRS, (only one communication mode can be selected for the same device)
Communication protocol Modbus protocol
Mechanical properties
Mounting type F or H pole, installation inclination < 5 ℃
IP grade IP grade
Dimension and structure capacity


front door opening side door opening weight











dimension (W×D)

 企业微信截图_20210721094007 35 760×1150×470 624×250 780×1110×620 644×350 50 4-Φ13
70 760×1150×470 624×250 780×1110×620 644×350 75 4-Φ13
100 760×1150×470 624×250 780×1110×620 644×350 95 4-Φ13



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