Three-Phase Smart Circuit Resistance Tester Contact Loop Impedance Tester
Three-Phase Contact Loop Impedance Tester Introduction
- They are used to measure the resistance of three-phase electrical circuits and devices like motors, transformers, cables, etc. This helps determine if there are any loose connections, degraded contacts or other issues.
Three-Phase Contact Loop Impedance Tester Working Principle
- Smart circuit testers have a microprocessor that controls the testing sequence, measures and calculates resistance, and provides a digital readout of the results. They work by sending a small test current through each phase of the circuit and measuring the voltage drop. Using Ohm's law, the resistance is then calculated.
Three-Phase Contact Loop Impedance Tester Advantages
- Color Touchscreen: 800x480 high-definition 7-inch color touchscreen for human-machine dialogue and high-speed thermal receipt printing
- Multiple Current Output Levels: Utilizes the latest power supply technology to continuously output high currents for extended periods across multiple current level settings
- USB Drive Data Export: Equipped with USB drive data export function to export excel files
- Standard Modbus-RTU: Equipped with RS232 interface (RS485 optional)
- Computer Control and Data Upload: Equipped with RS232 host computer for communication control, data upload and generation of Word/Excel files
- Bluetooth Control and Data Upload: Standard Bluetooth feature equipped and Android Bluetooth APP for control, data upload and Word file generation
- Wired Control Operation (Optional): Enables convenient assembly line operation with external one-touch switches to start/interrupt testing. Resistor limit overage outputs vacant node to light up alarm lamp
- Wireless Remote Control (Optional): Equipped with remote controller for one-touch testing start/interrupt and customizable remote display of test status
- They allow resistance testing while equipment is still energized and in its normal operating state, which is known as online or hot testing. This avoids downtime from powering down equipment.
- Safety is critical as high voltages are present. Smart testers have insulated terminals, voltage detection, and safety mechanisms in case connections are made incorrectly.
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