Operation After Power Failure; Emergency Procedure; Emergency Handling Plan; Hazards - Alpha ESS Storion-T30 Installation, Operation & Maintenance Manual

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Operation After Power Failure

The battery system belongs to the energy storage system, so it stores fatal high voltage even
if the DC side is disconnected, touching the output of the battery modules is strictly prohibited.
The Inverter can also hold fatal voltage on both the DC and or AC side after disconnection, so
it must be tested by using a suitably calibrated voltage tester for safety reasons before an
operator works on the equipment.

Emergency Procedure

When the T30 Battery energy storage system appears to be running abnormally you can turn
off the grid connected main switch directly feeding the BESS and turn off all load switches within
the BESS, closing the switch of the moulded case circuit breaker (MCCB) of the BMS
(HV900112) at the same time. To prevent a potentially fatal personal injury, if you want to repair
or open the machine after the power is switched off please measure the voltage at the input
terminals with a suitably calibrated voltage tester.
Before working on this equipment, please confirm that there is no grid electric supply to the
BESS!
The upper cover plate cannot be opened until the DC-link capacitance inside the battery
modules discharges completely about 15 minutes later.

Emergency Handling Plan

1. Disconnect the AC breaker.
2. Check the control power supply. If it is OK, return the power supply to find out the reason.
3. Please record every detail related to the fault, so AlphaESS can analyse and solve the fault.
Any operation of equipment during a fault is strictly forbidden, please contact Alpha as soon as
possible.
4. As battery cell contains little Oxygen inside and all cells have got explosion-proof valve,
explosion hardly happens.
5. When the indicator light on the BMS (HV900112) shows a red fault, check the fault type
through the communication protocol, and contact our after-sales service personnel for advice.

Hazards

If there's electrolyte leakage, please avoid any contact with the leaking liquid or gas. If one is
exposed to the leaking substance, please follow the actions described in below immediately:
Inhalation: Evacuate the contaminated area, and seek medical attention.
Eye contact: Rinse eyes with running water for 5 minutes, and seek medical attention.
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Safety Instructions
Alpha ESS Co., Ltd.