1、 Installation environment selection

1. Reasonable location
   • The installation location should accurately reflect the overall insulation condition of the power system, usually close to core equipment such as main transformers and switchgear, avoiding installation near strong electromagnetic interference sources (such as high-power motors and frequency converters) to prevent signal distortion.
   • Ensure that the installation environment is dry and ventilated, avoiding direct sunlight, high temperatures (such as boiler rooms), humidity (such as basements), or dusty environments, to prevent performance degradation caused by moisture or dust accumulation in internal components of the equipment.
2. Space and Protection
   • Reserve sufficient operating space for later maintenance and repair. If it is a rail mounted equipment (such as 35mm standard rail), the compatibility of the cabinet needs to be confirmed; If it is installed on a panel, it is necessary to ensure that it is firmly fixed and easy to observe the display screen.
   • The installation location should have no risk of dripping water and avoid liquid splashing into the interior of the equipment; If used in corrosive environments such as chemical and food industries, equipment with a protection level of ≥ IP54 should be selected and equipped with protective covers.

2、 Installation specifications and wiring

1. Wiring accuracy
   • Connect the circuit strictly according to the wiring diagram, use a pin type socket connector to crimp the circuit, insert the corresponding terminal, and tighten the screw to prevent poor contact from causing false alarms or malfunction of the equipment.
   • The positive and negative poles of the bus voltage input need to be equipped with fuses, and the distance between the fuse points should be greater than 1.75mm (if the input end is equipped with a mechanical circuit breaker, there is no requirement for the fuse distance), to ensure that the circuit can be quickly cut off in case of overcurrent.
   • The grounding terminal must be reliably grounded, such as using M4 spring washer screws to fix the grounding hole of the shell base to the cabinet ground, to avoid safety hazards caused by poor grounding.
2. Communication line wiring
   • If the device supports remote communication (such as RS485 interface), shielded twisted pair cables with a wire diameter of ≥ 0.5mm ² should be used and kept away from strong electrical cables or other strong electric field environments to prevent signal interference.
   • When the communication distance is long or the environment is harsh, a 120 Ω matching resistor should be connected in parallel at the beginning and end of the communication line to ensure stable data transmission.

3、 Electrical safety protection

1. Anti-static measures
   • Before coming into contact with the equipment, operators need to wear anti-static wrist guards and ground the other end well to prevent human static electricity from damaging sensitive components such as ICs on the circuit board.
2. High voltage operation safety
   • Before debugging, ensure that the equipment is in a power-off state and wear protective equipment such as insulated gloves and shoes; During the debugging process, it is strictly prohibited to touch high-voltage parts to prevent electric shock.

4、 Debugging steps and calibration

1. power check
   • Check if the power cord is intact, and observe if the device can start up normally after connecting the power supply; If it cannot be turned on, check the power cord, socket, fuse and other components.
2. Self inspection and calibration
   • After booting up, the device will perform a self check to observe if there are any abnormal information (such as fault codes) on the display screen. If there are any, refer to the instruction manual to troubleshoot.
   • Calibrate the output voltage and current measurement circuits of the equipment using standard voltage sources and ammeters to ensure testing accuracy; The calibration method must be strictly operated according to the instructions.
3. Functional Testing
   • Select appropriate test voltage and time for insulation testing, observe the display screen results and compare them with the actual situation; If the deviation is significant, recalibration or inspection of the testing circuit is required.
   • Test different circuits to verify if the equipment is functioning properly and identify potential faults.

5、 Operating standards and training

1. Operator Qualification
   • Operators need to receive professional training, be familiar with equipment functions, operating procedures, and troubleshooting methods, and are strictly prohibited from operating without a license.
   • Operators must be in good health, have no contraindications such as heart disease, and are not allowed to operate equipment while wearing pacemakers or heart rate monitors.
2. Standard operating procedures
   • Before testing, confirm that the equipment is reliably grounded, the high-voltage output is "0", and it is in the "reset" state; During the testing process, it is strictly prohibited to unplug or short-circuit the test line or output to prevent endangering personal safety or damaging the equipment.
   • When testing large capacity capacitive loads, it is necessary to ensure sufficient discharge time after the test is completed. The test line can only be disassembled after the discharge is completed to avoid residual voltage causing danger.

6、 Maintenance and upkeep

1. routine inspection
   • Regularly check whether the appearance of the equipment is intact, whether the connecting wires are loose, and whether the grounding is reliable; Observe whether the display screen and indicator lights are normal, and promptly handle any abnormalities.
2. periodic calibration
   • Regularly calibrate the output voltage and current measurement circuit according to the equipment manual requirements to ensure testing accuracy; The calibration cycle is usually 1 year, depending on the frequency of use and environment.
3. Storage and transportation
   • When the equipment is not in use for a long time, it needs to be charged regularly (such as once a month) and stored in a dry, dust-free, and non corrosive gas environment; Avoid severe vibrations during transportation to prevent damage to internal components.