Page 352 - CITS - Electrician - Trade Practical

ELECTRICIAN - CITS

EXERCISE 119 : Demonstrate troubleshooting of EV

charging stations

Objectives
At the end of this exercise you shall be able to:
• identify the symptoms of the trouble
• test various sections of EV installation.

Requirements

Tools/Equipments/Instruments
• Trainees kit - 1 No. • Instruction manual of charger - 1 No.
• Digital multimeter - 1 No.
Procedure

TASK 1: Identify the symptoms of the trouble

1 Check for Input MCCB to EV charger, in case of charging failure.
2 Check the service / user manual for EVCS Notification, Warning, Alarm and Error Codes. A guide of errors is
summarized in Table1
General EV Charging Station Error Codes

Sl. No Error type Reason Remedy

High Battery Voltage battery voltage is too high to check the battery voltage and
1
Error start charging cable connections
battery voltage is too low to start check the battery voltage and
2 Low Battery Voltage Error
a charge. cable connections
does not reach the required improve the cooling air flow,
3 Charge Timeout
voltage within a safe time limit check for low AC voltage
the battery could not be charged
4 Battery Defective replace the battery pack
to the minimum voltage
Charge Amp-Hour Limit deeply discharged battery, poor replace the battery pack, check
5
Exceeded battery connection, DC connections
Battery Temperature Out Check temperature / check the temperature sensor
6
of Range temperature sensor of battery. and connections
Charger Output Reverse
7 Improper connection checking the battery connections
Polarity

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