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Home > Electrical & Electronics > Power Transmission & Transformer > Transformer > Auto Adjusting Device for Three-phase Load Unbalance

Auto Adjusting Device for Three-phase Load Unbalance

Name: Auto Adjusting Device for Three-phase Load Unbalance
Brand: Henan Ruitong Electrical
SKU: 161452747

Auto Adjusting Device for Three-phase Load Unbalance thumbnail-1

Auto Adjusting Device for Three-phase Load Unbalance thumbnail-2

Auto Adjusting Device for Three-phase Load Unbalance photo-1

Auto Adjusting Device for Three-phase Load Unbalance photo-2

Negotiable MOQ: 1 Set (Price negotiable depending on order volume and customization)

Key Specifications

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Brand Name:

Henan Ruitong Electrical

Place of Origin:

China

Model Number:

RT-MEC

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Henan Ruitong Electrical Technology Co.ltd

Payment & Shipping

Payment Methods:

Port of Shipment:

Qingdao

Delivery Detail:

7 days

Product Details
Company Profile
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Brand Name Henan Ruitong Electrical

Place of Origin China

Model Number RT-MEC

Product Overview:

Ruitong Electrical Xi'an R&D Center has developed an auto adjustment device for three-phase load imbalance (RT-MEC), a new type of power electronic equipment. By collecting the operation parameters of three-phase voltage and current of the low-voltage distribution line with the sampling circuit, the device can calculate the imbalance extent between the phases and the current value and phase to compensate and be compensated via model operation. It controls the PWM signal generator to send control signals to internal IGBT drive according to the set value, and thus the inverter will generate a required current signal and send into the system, so as to realize the automatic balance adjustment of the three-phase loads.
Working Principle Schematic Diagram of Auto Adjusting Device for Three-phase Load Imbalance (RT-MEC).

Product Features:

-The highly-integrated three-level IGBT module from Infineon, Germany, ensures low voltage stress and high reliability, as well as reduced conduction loss and switching loss;
- Adopt TI's TMS320F28377D series DSP chip with dual-core 32-bit CPU, to ensure high control precision and fast speed, and with multiple 16-bit ADCs, to ensure high sampling accuracy;
- Adopt a three-level topology to effectively reduce ripple current and improve the quality of the output waveform;
u Adopt the magnetic ring reactor with small size, light weight, low temperature rise and low noise;
u The high-performance Hall current sensor and Hall voltage sensor ensure high sampling accuracy;

- Various compensation modes: harmonic suppression priority, reactive power compensation priority, active imbalance adjustment priority, etc.;
- The response time is less than 10ms and the control is fast, which ensures better transient stability;
- Complete protection functions for external electrical faults such as busbar overvoltage, undervoltage and phase loss, and internal faults such as IGBT overheating and overcurrent;
- Complete production and inspection procedures, all products undergo 12-step production process, 4 inspection procedures, and 72-hour aging test.
- The WIFI module supports close observation and debugging via mobile phone for equipment operation;

Main technical parameters:

Rated capacity	RT-MEC0.4-30	RT-MEC0.4-50	RT-MEC0.4-75	RT-MEC0.4-100
System Parameters
Working Voltage	400V（-40%～+20%）
Operating Frequency	50/60Hz±5%
Wiring Method	Three-phase three-wire、Three-phase four-wire
Performance
Compensation Modes	8 modes including active imbalance priority and reactive power priority
Imbalance compensation ability	The imbalance rate within the range of compensation capacity ＜3%
Efficiency	≥97%
Effective response time	Instant response time ，complete response time≤10ms TSC branch response time≤20ms
Protective Function	Overvoltage、undervoltage 、inverter overcurrent 、overheating、overload ,etc
Display and interface
Language	Chinese and English interface
Display	Voltage、Current 、power factor、imbalance rate、harmonic content ,etc
Communication Interface	Optional between RS-232，RS-485，RJ45 network interface， WIFI and GPRS
Communication Protocol	MODBUS-RTU
Case Configuration
Profile	Stainless Steel
Environmental Conditions
IP Level	IP44（ customization is available for other IP levels ）
Operating Temperature	-10～55℃
Storage Temperature	-25～70℃
Relative Humidity	Maximum 95％RH（no condensation）
Altitude	No higher than 1500m（higher altitude are supported if the capacity is sightly reduced ）