Hubei Tianrui Electronics Co., Ltd

Hubei Tianrui Electronics Co., Ltd. was founded in 1998, is a collection of scientific research, production, sales and service in one of the high-tech power electronics components. Focusing on the development of ”Relay Protection and Power Automation“， the company continues to provide complete sets of precision transformer solutions for domestic power equipment manufacturers, and is a well-known manufacturer of relay protection relays and a leader in the industry.
As one of the specialized research institutes for precision transformers in China, Tianrui successfully listed on the new three board in May 2016. In 2013, it passed the ”Hubei Provincial Recognized Enterprise Technology Center“ approved by the six ministries and commissions. Up to now, it has obtained 4 invention patents, 30 utility model patents and 5 appearance patents. At the same time, Tianrui Electronics has also made considerable progress in foreign technology exchanges, including Tianmen Institute of Electrical Instrumentation jointly established with the Provincial Bureau of Quality and Technical Supervision, an undergraduate internship base jointly established with Huazhong University of Science and Technology, Association to build academician expert workstations, and the provincial post-doctoral CMC's innovative practice base and other scientific research cooperation to further consolidate the Tianrui technology innovation soil, effectively protect the company's leading product technology.
After nearly 20 years of development, Tianrui has become a multidirectional development sensor manufacturer focusing on miniature transformers, electronic sensors and 20kV DC sensors. The company is the CLP relay protection and automation equipment branch director unit, the CLP Power Grid Equipment Working Committee, the National Electrical Instrument Standardization Technical Committee, is also a precision micro-current, voltage transformer industry standard drafting unit. The company won the ”Shou contract re-credit enterprises in Hubei Province“ for 10 consecutive years, was rated as brand-name products and well-known trademarks in Hubei Province.
Tianrui product quality as the cornerstone of the company's development, the company in 2017 passed the ISO9001: 2015 quality management system certification, and in 2009 passed ISO9001: 2008 for version certification. In the past 13 years, the company strictly follows the requirements of ISO9001 Quality System to ensure stable and reliable operation of customer equipment and has won unanimous endorsement from the industry.
Tianrui production efficiency as the engine for the development of the company, the company formed in 2007 on the industry's leading automated precision production technology transformation team, through nine years of unremitting efforts, has built five precision transformer automation production lines, And the current on-line operation of the ”Tianrui ERP system“ to achieve the information connection in the precision transformer industry took the lead in achieving the two production automation and information technology integration, effectively improve the production efficiency, precision transformers for automated production, Set an industry benchmark.
The company's main business covers high-voltage relay protection dedicated transformer series, low-voltage distribution network with special transformer series, Hall sensor series, intelligent transmitter series, new energy for power series five business systems. Tianrui Electronics is China's earliest with independent development and production of high voltage relay dedicated transformers one of the few manufacturers, with 20 years of power sensor design, production experience, as well as the operation of the field experience accumulated for the State Grid Electric Power Automation Equipment Advanced and reliability, and it is the main drafting unit of the current ”Miniature Current Transformer“ JB / T 10665, ”Microvoltage Transformer“ JB / T 10667 industry standard, which has obvious advantages in product and technology starting point At present, the company has always been at the forefront of the domestic power sensor market and is expected to occupy a leading position in the next 2 trillion distribution network construction and renovation action plan. Transmission and distribution and control equipment is widely used in power systems, rail transportation, automobile manufacturing and other fields, with good market prospects.

Products

Miniature Voltage Transformer

Measuring Voltage Transformers

This product is used to transmit AC voltage signals below 500V,convert high-level AC voltage signals into low-level AC voltage signals through transformers, and accurately transmit them to electronic circuits based on microprocessors to provide power distribution automation equipment. Precise measurement with long-term stable working characteristics.
- Small flux leakage ,low loss, small phase error and high precision；
- The voltage is directly input ,and the secondary side directly outputs the voltage ;
- Reliable operation and good consistency ;
- Various shape structures are available .

Voltage Transformer for Relay Protection

This products is used for transmission ,isolation and insulation of voltage signals .The high-level AC voltage signal is converted into a low-level AC voltage signal through the transformer ,and accurately transmitted to the electronic circuit based on microprocessor ,which is suitable for signal acquisition of replay protection voltage products .
- Good linearity and excellent consistency
- Good transient characteristics and wide working range
- The voltage is directly input and the secondary side directly outputs the voltage
- The circuit is simple ,no external power supply is required and the operation is reliable
- A variety of form factors are available ,with optional PCB mounting and insert fixing methods

Current Type Voltage Transformer

This product is used for collection and isolation of voltage signals of relay protection equipment, Instruments and meters below AC 1000V .This product is a current-type voltage transformer. The primary is connected with a resistor in the circuit to convert the voltage into current. After the transformer is used for current conversion ,the secondary output current signal is converted into the required voltage through the sampling resistor.
-Good linearity and excellent consistency
-Small size ,PCB installation ,suitable for integrated design ;
-Low price ,conductive to cost control
-A variety of form factors are available

Isolation Voltage Transformer for Primary and Secondary Fusion

This product is used for signal isolation and transmission sampling of phase voltage ,phase current and zero-sequence voltage of primary and secondary fusion equipment
-High precision of small signal transmission and excellent consistency
-High input AC impedance, good matching with equipment .
-The primary and secondary isolation has high withstand voltage ,strong anti-interference ability and reliable operation .

Miniature Current Transformer

Measuring Current Transformers

This product is used for the isolation and acquisition of working signals of relay protection products below 200KV;The AC current signal is converted into a low-level AC voltage signal through the transformer, which is accurately transmitted to the electronic circuit based on microprocessor for power distribution .Automated equipment provides precise measurements with long-term stable operating characteristics.
-High precision and good consistency
-PCB mounting method ,directly soldered on the circuit board
-Directly convert the measured galvanic isolation into the required voltage ;；
-Various shapes and structures are available ;

Current Transformer for Low Voltage Protection

This product is used for signal isolation and acquisition of low-voltage relay protection ; The current signal during short-circuit fault of the system is converted into a signal suitable for weak current circuit through the transformer, and the accurately transmitted to the electronic circuit based on microprocessor ; The product uses a special composite magnetic core with high permeability and small residual magnetism ,which can effectively prevent the first wave distortion caused by the “excitation inrush current” generated during the opening and closing test .
-PCB mounting method ,directly soldered on the circuit board;
-High permeability ,small magnetic leakage and excellent consistency ;
-Strong overload capacity ,can withstand 20-40 times the rated current instantaneous impact without saturation ;
-30% DC component waveform can be superimposed without distortion;
-Various shape structures are available .
-The circuit is simple ,no external power supply is required and the operatio is reliable .
-Good transient characteristics, real waveform, 100% DC component waveform can be
-superimposed without distortion
-Various installation methods, optional PCB installation and bolt fixing methods
-Various shape structures are available

Fault Recording Current Transformer

It is specially designed for the power system fault recording device It is used to convert the transient fault current signal into a small voltage signal for full-true sampling .It has good transient characteristics and super anti-saturation ability .
-The circuit is simple ,no external power supply is required and the operation is reliable .
-Good transient characteristics, real waveform transmission ,strong overload capacity ,can withstand 20-60times the rated current transient impact without saturation
-Various installation methods, optional PCB installation and bolt fixing methods
-Various shape structures are available

Current Transformer for Transient Protection

This product is specially designed for high-voltage relay protection devices. It is used to accurately convert short-circuit fault transient current signals into signals based on micro-processing electronic circuits for date transmission such as isolation and acquisition. The product transits real short-circuit current waveforms. It has good transient characteristics and super anti-saturation ability .
-The circuit is simple ,no external power supply is required and the operation is reliable .
-Good transient characteristics, real waveform, 100% DC component waveform can be superimposed without distortion .
-Various installation methods, optional PCB installation and bolt fixing methods.
-Various shape structures are available .

Current Transformer for Motor Protection

This product is used for 360V,660V three-phase AC motor protection. It converts the AC current signal into a low-level AC voltage or current signal through a transformer and accurately transmits it to a microprocessor-based electronic circuit to provide protection for the motor.
- Wide overload and excellent consistent
- Different input current can be converted into a unified standard value ,which is convenient for signal acquisition
-The circuit is simple ,no external power supply is required and the operation is reliable
- Various installation methods, optional PCB installation and bolt fixing methods
- Various shape structures are available

Instrument Current Transformer

This product is used as an electric energy metering device that requires high precision and small phase error. The input AC current through the core hole of the transformer induces a Ma-level current signal on the secondary side ,which is converted into the required voltage signal by the back-end sampling resistor and accurately transmitted to the electronic circuit based on micro-processing .
- Low price ,easy cost control
- High precision ,wide linear range ,excellent consistency
- Small size and light weight ,easy for high –density PCB mounting
- Various shape structures are available

Split-core Current Transformer

A Series Split-core Cable Type Current Transformer

TRDP Series Busbar Type Separated Current Transformer

TRDP(Ⅲ) Series Rotating Shaft Split-core Current Transformer

C Series Split-core Type Current Transformer (Busbar Perforated with Screw Fixed)

D Series Split-core Type CT for Outdoor Waterproof, Puncture&Power Harvester and Temperature Measurement

D Series Split-core Type CT for Outdoor Waterproof, Double Puncture&Power Harvester

W Series Split-core Type Outdoor Waterproof Current Transformer (Round Hanging Wire Type)

LDZKW Series Split-core Type Outdoor Waterproof Current Transformer

Split-core Type Punture & Power Harverster Clamp

Split-core Current Transformer

A Series Split-core Cable Type Current Transformer

TRDP Series Busbar Type Separated Current Transformer

TRDP(Ⅲ) Series Rotating Shaft Split-core Current Transformer

C Series Split-core Type Current Transformer (Busbar Perforated with Screw Fixed)

D Series Split-core Type CT for Outdoor Waterproof, Puncture&Power Harvester and Temperature Measurement

D Series Split-core Type CT for Outdoor Waterproof, Double Puncture&Power Harvester

W Series Split-core Type Outdoor Waterproof Current Transformer (Round Hanging Wire Type)

LDZKW Series Split-core Type Outdoor Waterproof Current Transformer

Split-core Type Punture&Power Harverster Clamp

Zero Sequence(Residual) Current Transformer

Closed Loop Residual (Zero Sequence) Current Transformer

B Series Split-core Outdoor Waterproof Residual Current Transformer_Base Installation Fixed

Low Voltage Current Transformer

BH/SDH Busbar Type Series Current Transformer

Low Voltage Current Transformer for Metering of State Grid Version

Flexible Rogowski Coilh

R Series Split-core Flexible Rogowski Coil

Split-core Three-phase Flexible Rogowski Coil

Split-core Punture&Power Harverster Flexible Rogowski Coil

Hall Sensor

240-LKH Open-loop (Directly Measurement Type) Current Sensor

209-LKH Open-loop (Directly Measurement Type) Current Sensor

210-LKH Open-loop (Directly Measurement Type) Current Sensor

221-LKH Open-loop (Directly Measurement Type) Current Sensor

201-LKH Closed-loop (magnetic balance) current sensor

203-LKH Closed-loop (magnetic balance) current sensor

225-LKH Closed-loop (magnetic balance) current sensor

230-LKH Closed-loop (magnetic balance) current sensor

217-LKH Closed-loop (magnetic balance) current sensor

229-LKH Closed-loop (magnetic balance) current sensor

AC / DC Transmitter

215-LXN DC Leakage Current Sensor

222-LXN DC Leakage Current Sensor

223-LBCD Quantity of Electric Charge Isolation Transmitter

207-YBG12 Quantity of Electric Charge Isolation Transmitter

206-YBG12 Photovoltaic Isolation Transmitter

234-YBS1G Photovoltaic Isolation Transmitter

Current Power Harvester Device

Power Harverster CT for Electricity Transmission Line Fault

CT Energy Harvesting Device

High Voltage Equipment Insulation Monitoring Sensor

XL Series Active Zero Flux Leakage Current Sensor

XLW Series Passive Zero Flux Leakage Current Sensor

Transformer Bushing Adapter

Transformer Core Ground Sensor(Split-core Lock Catch Type)

Transformer Core Ground Sensor(Closed Loop Cross-core Type)

Partial Discharge Monitoring Sensor

HF Series High Frequency Partial Discharge Monitoring Sensor

Distribution Power Grid Electronic Sensor

Electronic AC Voltage Sensor

Electronic AC Current Sensor

Ring Main Unit Voltage Sensor

Primary and Second Fusion Post Terminal

Measuring Instrument

Multifunction Quantity of Electric Charge Transmitter

Previous booth no: path89

website: https://www.trsensing.com/index.html

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