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Replacing Power Supply and Distribution System Components
- Only qualified personnel can replace components of the power supply and distribution system.
- Wear protective tools such as insulation gloves and shoes before replacing a power supply and distribution component.
- Power off the upper-level equipment before replacing a power supply and distribution component.
- Use a multimeter and electrical tester pen to check whether the front and rear ends of the component to be replaced are powered off after the component is powered off.
Replacing a Surge Protection Module
Prerequisites
- Do not replace a surge protection module during a thunderstorm.
- Before replacing a surge protection module, wear insulation gloves.
- Tools: insulation protective gloves, electroprobe
- Material: A new surge protection module of the same model is available and functional.
Procedure
- Switch the SPD circuit breaker to OFF.
- Remove the protective panel from the SPD.Figure 6-3 Removing the protective panel
- Measure the L1, L2, L3, and N voltages to PE using an electroprobe, as shown in Figure 6-4, and verify that the faulty SPD has no voltage before replacing the faulty surge protection module.
- Hold the faulty surge protection module and pull it out, as shown in Figure 6-5.
During replacement, do not touch the energized components in the power distribution subrack.
- Install the new surge protection module.
- Reinstall the protective panel for the SPD, and switch the SPD circuit breaker to ON.
- Check whether there are alarms on the ECC800-Pro. If there is no alarm, the surge protection module is functional.
Replacing a UPS2000-G
Prerequisites
- Tools: electroprobe, insulation gloves, Phillips screwdriver, multimeter
- Materials: A spare UPS of the same model is available and functional.
- The UPS is damaged or faulty and cannot work.
- Ensure that the main ground cable of the smart module is securely connected.
- After removing cables, wrap exposed terminals with insulation tape and do not block cable labels. If cable labels are blocked, cables may be connected incorrectly later.
- Turn off the battery switch, or remove the wiring terminal between the battery and the faulty UPS.
- Turn off the corresponding UPS input and output switches. Use a multimeter to check whether the UPS input and output terminals and battery terminals are de-energized.
- Remove the rear cover from the UPS, and remove the input and output power cables, battery cable, and signal cable.
Wrap the exposed cable with insulation tape.
- Remove screws from the UPS front panel, and pull out the UPS.
- Install the new UPS and screw it to the cabinet.
- Connect the output power cables, signal cable, and UPS input power cables in sequence. Check whether the cable labels are consistent with the silk screens on the UPS, and whether all cables are connected.
- Switch on the external battery circuit breaker to start the UPS. You can set the battery capacity based on the site requirements.
- Press and hold ON/MUTE for more than 5s. Release the button when you hear a beep sound. The UPS starts to work in normal mode.
- After you ensure that the UPS runs properly, switch on the AC output circuit breaker Q for the UPS to start the load.
Replacing a Lithium Battery
Prerequisites
- Tools: insulation gloves, Phillips screwdriver, socket wrench
- Material: A new battery module is intact.
- The gyroscope function is disabled.
Before the replacement, ensure that the load services are not affected or obtain written consent from the customer.
Procedure
- Switch the BAT– battery circuit breaker on the power system to OFF or remove the battery fuse.
- Use the Manual ON/OFF button on the battery to turn off the battery output.
- Disconnect the cables from the old battery. Insulate each cable and label it immediately after disconnecting it.
- Loosen the screws on the panel and remove the battery.
- Install the new battery and tighten the screws.
- Hold down the Manual ON/OFF button for 15s for the battery to enter the maintenance mode. In this mode, all indicators blink, the battery board is activated, but the battery is not charged or discharged.
- Connect the cables to the new battery based on the cable labels.
- Switch the BAT– battery circuit breaker in the power system to ON or reinstall the battery fuse using a fuse extracting unit.
- Hold down the Manual ON/OFF button for 15s for the battery to exit the maintenance mode. The battery is automatically activated and connects to the power system.