This chapter provides instructions for the electrical operation of the Energy storage product.

WARNING

People with electrical operation qualifications can operate Energy storage products, and others may not operate without authorization!

7.1 Normal startup of energy storage products

1) Startup process of energy storage products:

Figure 7-1 Secondary distribution system diagram

Figure7-2 Primary distribution system diagram

Figure 7-3 Schematic diagram of GPC DC24V power MCB

Table 7-1 Switch Interpretation:

Table 7-2 System power-on process

Operation Steps

Step1： Open all valves and exhaust valves in the liquid chiller unit pipeline. The specific operations are as follows:

1.1 Open the four long-handled valves in the liquid chiller unit cabinet (as shown in Figure 7-4): gently pull the handle outward, and then rotate the handle from the closed position (the handle is perpendicular to the liquid cooling pipeline) to the open position (the handle is parallel to the liquid cooling pipeline).

Figure 7-4 Four long-handled valves in the liquid chiller unit cabinet

1.2 Open the four short-handled blue ball valves in the liquid chiller unit cabinet (as shown in Figure 7-5): the handles should be parallel to the pipes.

Figure 7-5 Four short-handle blue ball valves in the liquid chiller unit cabinet

1.3 Open an automatic exhaust valve in the liquid chiller unit cabinet: turn it counterclockwise until the valve loosens.

Figure 7-6 Automatic exhaust valve in liquid chiller unit cabinet

1.4 Open the battery room door, open the water inlet valve and water outlet valve under each battery string (8 water inlet valves and 8 water outlet valves in total): rotate the valve until the handle is parallel to the water cooling pipe.

Figure 7-7 Water inlet/outlet valve at the bottom of the battery string

1.5 Open the automatic exhaust valve on the top of each battery string (eight in total): turn counterclockwise until the valve is loose.

Figure 7-8 Exhaust valve on top of battery string

Step2：

Close the MCCB QF2K on the distribution box door.

Close the surge protection MCB QFSPD2.

Close the MCB QFP.

Close the MCB QFFC and connect the battery of the fire controller, fire protection system start to work.

Close the MCB QFFCM, fire exhaust fan start to work.

Close the MCB QFGPC, GPC is powered and software control enables. Then, close the MCB ZKKC inside of GPC, its 24V circuit will be powered on.

Note: After QF2K is closed, QFP and QFFC must be closed in time to power on the fire controller as soon as possible (or the lead-acid battery of the fire controller must be connected in advance before QF2K is closed to power on the fire controller first). If the fire controller is not powered on in time after QF2K is closed, QF2K will automatically trip for protection.

Figure 7-9 Fire Controller and GPC DC power-up

Step3：

Closethe MCB QFHV1 and QFHV2 on the distribution box, open the battery room door and confirm that all high-voltage unit indicators are on normally.

Figure 7-10 Close the BMS AC MCB

Close 1#~8# high-voltage unit MCCB QF61-QF68, then close the battery room door.

Figure 7-11 Close DC incoming MCCB

After software control enables, closed DC contactors KM61-KM68 through the GPC.

Step4： Close the AC MCCB QF21~QF28 in sequence in the primary distribution box. The series converters 1#-8# generate power on the AC side.

Figure 7-12 PCS AC input MCCB closed

Step5：

Close the MCB QFA1, QFA2, QFL, QFPDU on the distribution box.

After the MCB QFA1 is closed, the container dehumidifying air conditioner is powered on.

After the MCB QFA2 is closed, the container air conditioner is powered on.

After the MCB QFL is closed, the container lighting is powered on.

After the MCB QFPDU is closed, the container power distribution unit is powered on.

Confirm that the dehumidifying air conditioner, air conditioner communication and operation are normal through the environmental control interface of the HMI , and the control mode of the environmental control system is automatic mode.

Figure 7-13 QFA1, QFA2, QFL closed

Figure 7-14 QFPDU closed

Step6： Confirming that the battery room doors are all closed, close the MCB QFCH of the liquid chiller unit. Confirm that the liquid chiller unit communication is normal through the HMI environmental control interface, and confirm whether the inlet water pressure of the liquid chiller unit is greater than 0.3Bar; if the inlet water pressure is ≥0.3Bar, the liquid chiller unit can operate normally; if the inlet water pressure is <0.3Bar, the liquid chiller unit will report a water shortage fault. At this time, manual liquid replenishment is required before the liquid chiller unit can operate normally. For details on manual liquid filling, please refer to Section 7.2 “Manual liquid filling operation of liquid chiller unit”.

Figure 7-15 Liquid chiller unit input MCB closed

Note: 1.If the battery room door is not closed, the liquid chiller unit is not allowed to start up, otherwise condensation may occur on the battery pack surface.

2.The inlet water pressure in the liquid chiller unit will decrease as the temperature drops. When at room temperature (25℃), the inlet water pressure in the liquid chiller unit is 1 Bar. The change values of the inlet water pressure of the liquid chiller unit at different temperatures are as follows:

Table 7-3 Changes in inlet water pressure of liquid chiller unit at different temperatures

Step7：

Check whether the energy storage system ready indicators in the interface of HMI are green, if not, find the fault location according to the fault prompt. For troubleshooting, refer to Section 9.6 “Fault Troubleshooting”. If it still doesn't work, please call Paneco after-sales personnel.

Step8：

Set the operation mode and power of the energy storage system

1) General mode

When the current mode is enabled, the settings of "Separate" mode and "Time control" mode will be invalid.

Operation steps:

①Set "PCS control mode switch" to "General" mode.

②Click “ON” button of “System control” mode.

③Set the "Control mode" in the General mode to "AC power" mode, and then input the power value. The positive number is discharge, and the negative number is charge.

2) Separate mode

When the current mode is enabled, the settings of "General" mode and "Time control" mode will be invalid.

Operation steps:

①Set "PCS control mode switch" to "Separate" mode.

②Click “ON” button of “System control” mode.

③Set the "Control" mode of the 1# PCS~8# PCS in the separate control mode to "Constant AC power" mode, and then input the power value. The positive number is discharge, and the negative number is charge.

In the Stop mode, 1 #~8 # system can operate independently. The systems are independent of each other and operate independently.

3) Automatic operation settings

When the current mode is enabled, the settings of "General" mode and "Separate" mode will be invalid, and the system will automatically run according to the relevant settings of the "Time control" interface.Click “Time control” button into time control interface.

Operation steps:

①Enable "Time control" control mode.

②Set the effective time of automatic system operation (Year/Month/Day).

③Enable the current time period.

④Begin time and end time of system automatic operation(Hour/Min).

⑤Set the working mode and power.

Note: The battery can only be charged and discharged at full power when the minimum temperature of the battery cell is greater than 15°C, otherwise the charging and discharging power of the battery will be limited by temperature.

WARNING

Only qualified professionals are allowed to operate the energy storage product!

Figure 7-16 Normal startup operation process

7.2 Manual liquid filling process of chiller unit

Step1：

Remove the protective shell of the sight glass on the side of the refill tank to confirm whether there is liquid in the refill tank; if there is no liquid, open the refill tank cover and fill the refill tank with liquid to confirm that the water level in the refill tank is below the maximum water level line. (If the inlet water pressure is low, it may be necessary to perform the refill operation multiple times. It is recommended to fill the refill tank with liquid).

Step2：

Click the touch screen on the liquid chiller unit to enter the home page interface, click the "More" option, and enter the password: 6656.

Step3：

Click "Home" and switch the mode from "Remote" to "Local".

Step4：

Click “ON/OFF” in the lower left corner of the home page, and then the running light in the upper left corner will light up.

Step5：

Click "Maintain" and change the Mode column (Manual) on the second page from "Auto" to "Manual".

Step6：

Click "Maintain" and set the “Auto Add W pump” column on the third page to ON. After that, the liquid chiller unit will use the liquid in the replenishment tank for replenishment.

Step7：

During the refilling of the liquid chiller unit, enter the “status” interface to observe the inlet water pressure in real time. After the inlet water pressure rises above 0.3 Bar, return to the third page of the "Maintain" setting interface and set the “Auto Add W pump” column to OFF. (If the inlet water pressure of the liquid chiller unit is still not greater than 0.3 Bar after all the water in the refill tank is used up during the refilling process of the liquid chiller unit, you need to return to the third page of the "Maintain" setting interface and set the “Auto Add W pump” column to OFF, and then repeat steps (1) and (6) until the inlet water pressure of the liquid chiller unit rises above 0.3 Bar).

Step8：

Click "Maintain" and change the Mode column (Manual) on the second page from “Manual” to “Auto”.

Step9：

Click "Home" and switch the mode from "Local" to "Remote"

7.3 Low temperature startup of energy storage products

Step1：

Open all valves and exhaust valves in the liquid chiller unit pipeline. The specific operations are as follows:

1.1 Open the four long-handled valves in the liquid chiller unit cabinet (as shown in Figure 7-17): gently pull the handle outward, and then rotate the handle from the closed position (the handle is perpendicular to the liquid cooling pipeline) to the open position (the handle is parallel to the liquid cooling pipeline).

Figure 7-17 Four long-handled valves in the liquid chiller unit cabinet

1.2 Open the four short-handled blue ball valves in the liquid chiller unit cabinet (as shown in Figure 7-18): the handles should be parallel to the pipes.

Figure 7-18 Four short-handle blue ball valves in the liquid chiller unit cabinet

1.3 Open an automatic exhaust valve in the liquid chiller unit cabinet: turn it counterclockwise until the valve loosens.

Figure 7-19 Automatic exhaust valve in liquid chiller unit cabinet

1.4 Open the battery room door, open the water inlet valve and water outlet valve under each battery string (8 water inlet valves and 8 water outlet valves in total): rotate the valve until the handle is parallel to the water cooling pipe.

Figure 7-20 Water inlet/outlet valve at the bottom of the battery string

1.5 Open the automatic exhaust valve on the top of each battery string (eight in total): turn counterclockwise until the valve is loose.

Figure 7-21 Exhaust valve on top of battery string

Step2：

Close the MCCB QF2K on the distribution box door.

Close the surge protection MCB QFSPD2.

Close the MCB QFP.

Close the MCB QFFC and connect the battery of the fire controller, fire protection system start to work.

Close the MCB QFFCM, fire exhaust fan start to work.

Close the MCB QFGPC, GPC is powered and software control enables. Then, close the MCB ZKKC inside of GPC, its 24V circuit will be powered on.

Note: After QF2K is closed, QFP and QFFC must be closed in time to power on the fire controller as soon as possible (or the lead-acid battery of the fire controller must be connected in advance before QF2K is closed to power on the fire controller first). If the fire controller is not powered on in time after QF2K is closed, QF2K will automatically trip for protection.

In a low temperature environment, when the fire controller detects low temperature, it will alarms battery failure (as shown in Figure 7-22) to remind that the lead-acid battery may not be able to discharge at low temperatures. The battery fault alarm can be automatically restored after the ambient temperature of the fire controller rises to normal temperature.

Figure 7-22 Fire controller alarms battery failure in low temperature

Figure 7-23 Fire Controller and GPC DC power-up

Step3：

Close the MCB QFHV1 and QFHV2 on the distribution box, open the battery room door and confirm that all high-voltage unit indicators are on normally.

Figure 7-24 Close the BMS AC MCB

Close 1#~8# high-voltage unit MCCB QF61-QF68, then close the battery room door.

Figure 7-25 Close DC incoming MCCB

Step4：

Close the AC MCCB QF21~QF28 in sequence in the primary distribution box. The series converters 1#-8# generate power on the AC side.

Figure 7-26 PCS AC input MCCB closed

Step5：

Close the MCB QFA1, QFA2, QFL, QFPDU on the distribution box.

After the MCB QFA1 is closed, the container dehumidifying air conditioner is powered on.

After the MCB QFA2 is closed, the container air conditioner is powered on.

After the MCB QFL is closed, the container lighting is powered on.

After the MCB QFPDU is closed, the container power distribution unit is powered on.

Confirm that the dehumidifying air conditioner, air conditioner communication and operation are normal through the environmental control interface of the HMI , and the control mode of the environmental control system is automatic mode.

Figure 7-27 QFA1, QFA2, QFL closed

Figure 7-28 QFPDU closed

Step6： Confirming that the battery room doors are all closed, close the MCB QFCH of the liquid chiller unit. Confirm that the liquid chiller unit communication is normal through the HMI environmental control interface, and confirm whether the inlet water pressure of the liquid chiller unit is greater than 0.3Bar; if the inlet water pressure is ≥0.3Bar, the liquid chiller unit can operate normally; if the inlet water pressure is <0.3Bar, the liquid chiller unit will report a water shortage fault. At this time, manual liquid replenishment is required before the liquid chiller unit can operate normally. For details on manual liquid filling, please refer to Section 7.2 “Manual liquid filling operation of liquid chiller unit”.

Figure 7-29 Liquid chiller unit input MCB closed

Note: 1.If the battery room door is not closed, the liquid chiller unit is not allowed to start up, otherwise condensation may occur on the battery pack surface.

2.The inlet water pressure in the liquid chiller unit will decrease as the temperature drops. When at room temperature (25℃), the inlet water pressure in the liquid chiller unit is 1 Bar. The change values of the inlet water pressure of the liquid chiller unit at different temperatures are as follows:

Table 7-4 Changes in inlet water pressure of liquid chiller unit at different temperatures

Step7： During the heating operation of the liquid chiller unit, the water intlet/outlet water pressure, liquid chiller unit intlet/outlet water temperature, and battery cell temperature of the energy storage system can be viewed in real time on the touch screen. Because the charging operating temperature range of the battery cell is 0℃~45℃, and the discharging operating temperature range of the battery cell is -20℃~55℃, if the battery needs to be discharged, it is necessary to wait for the minimum temperature of the battery cell to rise to above -20℃ before the discharge operation can be performed; if the battery needs to be charged, it is necessary to wait for the minimum temperature of the battery cell to rise to above 0℃ before the charging operation can be performed.

Table 7-5 Power-limited operation strategy of energy storage system in low temperature environment

Note:1.T is the lowest temperature of the battery module, Pn is the rated power.For details on the environmental control logic operation strategy, please refer to Section 7.4 “Environmental control logic operation strategy of energy storage system”.

2.During the heating period of the liquid chiller unit, due to the characteristics of liquid expansion and contraction, the intlet/outlet water pressure will increase with the increase of temperature. When the outlet water pressure rises to about 3.4Bar, the liquid chiller unit will automatically release the pressure. Automatic pressure relief will return the excess liquid to the replenishment tank. If the volume of the inlet liquid is greater than the volume of the replenishment tank, the inlet liquid will fill the replenishment tank and then flow out from the drainage pipe at the replenishment tank port. The change of the intlet/outlet water pressure during the heating period of the liquid chiller unit is as follows:

Table 7-6 Changes in outlet/inlet water pressure during liquid chiller unit heating

Step8：

When the minimum temperature of the battery cell rises to above -20℃, the contactors of all high-voltage boxes can be closed through the contactor control interface of the HMI

Step9：

Check whether the energy storage system ready indicators in the interface of HMI are green, if not, find the fault location according to the fault prompt. For troubleshooting, refer to Section 9.6 “Fault Troubleshooting”. If it still doesn't work, please call Paneco after-sales personnel.

Step10：

Set the operation mode and power of the energy storage system

1. General mode

When the current mode is enabled, the settings of "Separate" mode and "Time control" mode will be invalid.

Operation steps:

①Set "PCS control mode switch" to "General" mode.

②Click “ON” button of “System control” mode.

③Set the "Control mode" in the General mode to "AC power" mode, and then input the power value. The positive number is discharge, and the negative number is charge.

2. Separate mode

When the current mode is enabled, the settings of "General" mode and "Time control" mode will be invalid.

Operation steps:

①Set "PCS control mode switch" to "Separate" mode.

②Click “ON” button of “System control” mode.

③Set the "Control" mode of the 1# PCS~8# PCS in the separate control mode to "Constant AC power" mode, and then input the power value. The positive number is discharge, and the negative number is charge.

In the Stop mode, 1 #~8 # system can operate independently. The systems are independent of each other and operate independently.

3. Automatic operation settings

When the current mode is enabled, the settings of "General" mode and "Separate" mode will be invalid, and the system will automatically run according to the relevant settings of the "Time control" interface.Click “Time control” button into time control interface.

Operation steps:

①Enable "Time control" control mode.

②Set the effective time of automatic system operation (Year/Month/Day).

③Enable the current time period.

④Begin time and end time of system automatic operation(Hour/Min).

⑤Set the working mode and power.

Note: The battery can only be charged and discharged at full power when the minimum temperature of the battery cell is greater than 15°C, otherwise the charging and discharging power of the battery will be limited by temperature.

WARNING

Only qualified professionals are allowed to operate the energy storage product!

Figure 7-30 Low temperature startup operation process

7.4 Environmental control logic operation strategy of energy storage system

7.4.1 The Control mode of GPC

GPC provides two environmental control modes: automatic control and manual control.

1. In manual control mode, liquid chiller unit, electrical room air conditioner, Dehumidifying air conditioner, and exhaust fan can be manually controlled to open and close. The parameters are as follows:

   The liquid chiller unit includes: liquid chiller unit refrigeration point Tc1, liquid chiller unit refrigeration hysteresis Tc2, liquid chiller unit heating point Th1, liquid chiller unit heating hysteresis Th2, all of which are directly set by the customer's host computer;

   The electrical room air conditioner includes: electrical room air conditioner refrigeration point Tc3, electrical room air conditioner refrigeration hysteresis Tc4, electrical room air conditioner heating point Th3, electrical room air conditioner heating hysteresis Th4, all of which are directly set by the customer's host computer;

   The Dehumidifying air conditioner includes: Dehumidifying air conditioner dehumidification point Rs1, Dehumidifying air conditioner dehumidification hysteresis Rs2, all of which are directly set by the customer's host computer;

2. In automatic control mode, GPC automatically controls the liquid chiller unit, electrical room air conditioner, Dehumidifying air conditioner, and exhaust fan to open and close according to internal logic.

The GPC liquid chiller unit ON/OFF control logic in automatic control mode

In automatic control mode, GPC automatically controls the liquid chiller unit on and off according to the battery module temperature and the set value.

Temperature setting includes:

Low value of low temperature start-up temperature T21 (default 15 degrees), high value of low temperature start-up temperature T22 (default 17 degrees).

High temperature start-up temperature T11 (default 25 degrees), high temperature shutdown temperature T12 (default 23 degrees).

Start-up conditions:

In low temperature environment, when the minimum temperature Tmin of the battery module is lower than T21, and the maximum temperature Tmax is lower than T22, GPC automatically controls the liquid chiller unit to start.

In high temperature environment, when the maximum temperature Tmax of the battery module is higher than T11, GPC automatically controls the liquid chiller unit to start.

Shutdown conditions:

When the maximum temperature Tmax of the battery module is lower than T12, and the minimum temperature Tmin is higher than T21+2 degrees, GPC automatically controls the liquid chiller unit to shut down.

The GPC electrical room air conditioner ON/OFF control logic in automatic control mode

In automatic control mode, GPC automatically controls the electrical room air conditioner on and off according to the internal temperature and humidity of the electrical room and the set value.

Temperature set value include:

Low temperature start-up temperature low value T31 (default 10 degrees), low temperature shutdown temperature T31+5 (default 15 degrees).

High temperature start-up temperature T41 (default 30 degrees), high temperature shutdown temperature T42 (default 28 degrees).

Start-up conditions:

In low temperature environment, when the internal temperature Ta of the electrical room is lower than T31, GPC automatically controls the electrical room air conditioner to start.

In high temperature environment, when the internal temperature Ta of the electrical room is higher than T41, GPC automatically controls the electrical room air conditioner to start.

Shutdown conditions:

When the internal temperature Ta of the electrical room is lower than T42, and the internal temperature Ta of the electrical room is higher than T31+5 degrees, GPC automatically controls the electrical room air conditioner to shut down.

The GPC Dehumidifying air conditioner ON/OFF control logic in automatic control mode

In automatic control mode, GPC automatically controls the Dehumidifying air conditioner to turn on and off according to the internal humidity of the battery rom and the set value.

Humidity set values include: high humidity startup humidity R11 (default 50%), shutdown humidity R11-10% (default 40%).

Dehumidification: Dehumidification start point Rs0 = dehumidification point Rs1 + hysteresis Rs2. When the internal humidity RH1 of the battery room is higher than the dehumidification start point Rs0, the dehumidification operation starts; when the internal humidity of the battery room is lower than the dehumidification point Rs1, the dehumidification stops.

Start-up condition: When the internal humidity RH1 of the battery room is higher than R11, GPC automatically controls the Dehumidifying air conditioner to turn on.

Shutdown condition: When the internal humidity RH1 of the battery room is lower than R11-10%, GPC automatically controls the Dehumidifying air conditioner to turn on.

7.4.2 Environmental control cooling/heating operation logic

Liquid chiller unit cooling/heating operation logic

GPC automatically controls the liquid chiller unit on and off. After the liquid chiller unit is turned on, the liquid chiller unit detects the inlet water temperature through the sensor, compares it with the cooling and heating parameters, and automatically controls the operation of the compressor, fan, and electric heater.

Cooling: Cooling start point Tc0 = cooling point Tc1 + hysteresis Tc2. When the battery room inlet water temperature T0 exceeds the cooling start point Tc0, the cooling operation starts. When the inlet water temperature is lower than the cooling point Tc1, the cooling operation stops.

Heating: Heating start point Th0 = heating point Th1 - hysteresis Th2. When the battery room inlet water temperature T0 is lower than the heating start point Th0, the heating operation starts; when the inlet water temperature is higher than the heating point Th1, the heating stops.

Electrical room air conditioner cooling/heating operation logic

GPC automatically controls the switch of the electrical room air conditioner. After the electrical room air conditioner is turned on, the electrical room air conditioner detects the inlet air temperature through the sensor, compares it with the cooling, heating and dehumidification parameters, and automatically controls the operation of the compressor, fan and electric heater.

Cooling: Cooling start point Tc5 = cooling point Tc3 + hysteresis Tc4. When the battery room inlet air temperature T1 exceeds the cooling start point Tc5, the cooling operation starts. When the inlet water temperature is lower than the cooling point Tc3, the cooling operation stops.

Heating: Heating start point Th5 = heating point Th3 - hysteresis Th4. When the battery room inlet air temperature T1 is lower than the heating start point Th5, the heating operation starts; when the inlet water temperature is higher than the heating point Th3, the heating stops.

Dehumidification: Dehumidification start point Rs0 = dehumidification point Rs1 + hysteresis Rs2. When the internal humidity RH1 of the electrical room air conditioner inlet air is higher than the dehumidification start point Rs0, the dehumidification operation starts; when the internal humidity of the battery room is lower than the dehumidification point Rs1, the dehumidification stops.

Dehumidifying air conditioner cooling/heating operation logic

GPC automatically controls the Dehumidifying air conditioner on and off. After the Dehumidifying air conditioner is turned on, the Dehumidifying air conditioner detects the inlet air humidity through the sensor, compares it with the dehumidification parameters, and automatically controls the operation of the compressor.

Dehumidification: Dehumidification start point Rs0 = dehumidification point Rs1 + hysteresis Rs2, when the dehumidifier air conditioner inlet air humidity RH2 is higher than the dehumidification start point Rs0, the dehumidification operation starts; when the humidity inside the cabinet is lower than the dehumidification point Rs1, the dehumidification stops.

7.4.3 Environmental control operation logic strategy diagram

Figure 7-31 Liquid chiller unit operation logic strategy diagram

Figure 7-32 Electrical room air conditioner operation logic strategy diagram

Figure 7-33 Dehumidifying air conditioner operation logic strategy diagram

7.5 Normal shutdown of energy storage products

Operation Steps

Step1： Enter the "Control" interface of the touch screen，click "Energy storage".

Step2： In "General" mode,set the “Active power” and “Reactive power” to "0" and change the Control mode from “AC power” mode to “Stop” mode,click “OFF” button

.

In "Separate" mode set the “Active power” to "0" and change the control mode of "1 #~8 # PCS" from "Constant AC power" mode to "Stop", click “OFF” button.

Step3： In the HMI touch screen "Control"-"Contactors" interface disconnect DC contactor KM61~KM68, and then manually disconnect the high voltage unit circuit breaker.

Step4： Turn the handle of the high voltage unit circuit breaker to the horizontal direction, and the circuit breaker is in the disconnected state.

Figure 7-34 Disconnection status of high-voltage unit circuit breaker

Step5： Manually disconnect the PCS AC MCCB (QF21~QF28).

Step6： Manually disconnect the MCB QFPDU, QFL, QFCH, QFA1, QFA2, QFHV1, QFHV2, ZKKC, QFFCM, QFFC, QFP, QFSPD2, QF2K.

Note: If the energy storage system is not started for a long time or needs to be transported over long distances, please close all valves and exhaust valves in the liquid chiller unit pipeline after step6, for specific valves and exhaust valves, please refer to step1 in Section 7.1 “Normal startup of energy storage products”.

Figure 7-35 Shutdown flow chart

7.6 Energy storage products Emergency Shutdown

The emergency Shutdown button (EPO) can quickly disconnect the electrical connection of the Energy storage product's battery and AC grid in an emergency.

NOTE

The EPO button remains locked after it is pressed. To release the EPO button, rotate and release it in the direction indicated on the button.

Figure 7-36 Check EPO button

The system will stop working when the EPO button is pressed. The converter AC side circuit breakers QF21-QF28, secondary circuit breakers QF2K , high-voltage unit circuit breakers QF61-QF68 and contactors KM61-KM68 will trip and stop working.

If you need to restart the system, start the energy storage product normally according to Section 7.1 “Normal startup of energy storage products”.