Beijing Jront Control Technology Co.,Ltd and the United States Electric Company jointly provide comprehensive technical support for the industrial automation manufacturing industry, as well as on-site measurement services and equipment leasing services.

1) Motor maintenance and test solutions

To ensure the normal operation of the motor, in addition to the normal use in accordance with the operating procedures and the normal monitoring and maintenance during the operation, regular inspection should also be carried out.

Industrial motor users need surge and partial discharge tests, which find short circuit and insulation defects of coils, windings, motors, generators, alternators and transformers. These faults are usually turn-to-turn, coil-to-coil or phase-to-phase faults. Other problems found in the surge test include wrong internal connection, wrong number of turns and other DC motors. The surge test is the only test to find weak inter-turn insulation. Partial discharge can provide early warning of insulation breakdown before surge test or voltage withstand test fails. Measuring partial discharge over time is a good and best way to track the condition of the equipment. Understanding its status can provide time to extend the remaining life of the motor.

For newly installed motor, the stator insulation resistance shall be greater than 2M Ω, and the rotor insulation resistance shall be greater than 0.8M Ω; For the motor in use, the stator insulation resistance shall be greater than 0.5M Ω, and the rotor insulation resistance shall be greater than 0.5M Ω. Low-voltage measurement can find the maintenance problems of the motor and help diagnose the motor with known or suspected problems.

Medium voltage and high voltage tests (megohm/infrared, withstand voltage, surge and partial discharge (PD)) will find faults when the motor continues to operate, and provide data and trend chart for service, maintenance or replacement during planned shutdown. As time goes by, the trend results will provide more references for motor maintenance, so that motor maintenance personnel have more time to make wise decisions.

The motor maintenance and test solution shall meet the following requirements:

Implement IEEE 522-2004 Test Guide Standard for Inter-turn Insulation of Form-wound Stator Coil of AC Motor

German Institute for Standardization, iec61934 standard

DIN IEC/TS 61934-2012 Electrical insulating materials and systems Electrical measurement of partial discharge (PD) under short rise time and repeated voltage pulse (IEC/TS 61934-2011)

British Standards Institute, iec61934 standard

BS DD IEC/TS 61934-2011 Electrical insulating materials and systems - Electrical measurement of partial discharge (PD) under transient rise and repeated impulse voltage

BS DD IEC/TS 61934-2011 Electrical insulating materials and systems - Electrical measurement of partial discharge (PD) under transient rise and repeated impulse voltage

International Electrotechnical Commission, iec 61934 standard

IEC TS 61934:2011 Electrical insulating materials and systems - Electrical measurement of partial discharge (PD) under short rise time and repetitive voltage pulses

IEC TS 61934-2011 Electrical insulating materials and systems - Electrical measurement of partial discharge (PD) under short rise time and repetitive voltage pulses

IEC/TS 61934-2011 Electrical insulating materials and systems - Electrical measurement of partial discharge (PD) under short rise time and repeated voltage pulse

IEC/TS 61934-2006 Electrical insulating materials and systems - Electrical measurement of partial discharge (PD) under short rise time and repeated voltage pulse

Chinese standard

IEC61934 involves electrical insulating materials and their products.

2) Power quality test solution -- CW500 power quality analyzer

Power measurement+power quality inspection

Check the power quality of main power supply lines of plant system control and device

Confirm the quality of power supply lines for plant system control and devices.

At the same time, measure the power consumption trend and consider the power saving measures.

CW500 can not only continuously measure harmonics, capture power supply line faults, record fault occurrence time with waveform, but also measure power and leakage current of neutral phase.

In addition, you can also confirm the operation of the device after the signal is connected to the DCV input channel.

Power supply line inspection

LED lighting is introduced to confirm the power saving effect

Confirm the power saving effect of LED lighting by measuring and comparing the power consumption before and after using LED lighting.

Check the power consumption of the drive pump of the production line

In liquid production lines, many drive pumps will be applied to frequency converters.

Confirm the power consumption before and after using the drive pump.

Through PC software, multiple drive pumps can be measured through multiple settings, which makes measurement easy and efficient. In addition, check the quality of the power supply line to ensure the work safety after using the new converter.

Provide harmonic measurement to improve the power supply line of printing plant (printing plant)

Purpose: To investigate the cause of periodical failure of printing press

Improve power efficiency by improving power factor

Improve the capacity of the entire power system

By setting the target power factor value, CW500 can calculate the value of the corresponding capacitor.

By setting appropriate advanced capacitors and improving power factor, users will benefit from the power saving effect caused by small load current and improve the capacity of the entire power system.

3) Motor and controller, frequency converter/motor drive test solution - WT500 power meter

Evaluate motor and controller

Electric vehicle and hybrid vehicle manufacturers need to accurately evaluate motors and controllers to achieve higher accuracy and efficiency.

Frequency converter/motor driver test

Multiphase measurement from battery, frequency converter to motor

Evaluation of motor characteristics, including torque, speed, steering, slip and electrical angle

Harmonic Analysis of Inverter Signal at Different Rotational Speed