Kia Niro: High Voltage Battery System / Power Relay Assembly (PRA) Description and operation
| Description |
The Power Relay Assembly (PRA) consists of the positive and negative main relays, pre-charge relay, pre-charge resistor and battery current sensor. It is located inside the battery pack assembly and controls the high voltage power circuit between the high voltage battery and inverter by the control signal of BMS ECU.
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1. High Voltage Power Terminal (-) 2. High Voltage Power Terminal (+) 3. Battery Current Sensor 4. Inverter Power Terminal (-) 5. Inverter Power Terminal (+) 6. Pre-Charge Resistor |
7. Main Relay (+) 8. Pre-Charge Relay 9. Main Relay (-) 10. Power Relay Assembly Connector (Battery current sensor signal input) 11. Power Relay Assembly Connector (Main relay control) |
| [PRA Operation Sequence] |
Power Relay Assembly (PRA) Specifications
Specification
Power Relay Assembly
(PRA)
Item
Specification
Rated Voltage (V)
240
Rated Current (A)
...
Power Relay Assembly (PRA) Repair procedures
Removal
•
Be sure to read and follow the “General Safety Information and
Caution” ...
Other information:
Kia Niro 2017 (DE HEV) Service Manual: Duct Sensor Repair procedures
Inspection
1.
Check that the voltage between No. 1 and 2 duct sensors change.
1. Sensor (+ 5V)
2. Sensor ground
Specification
Ambient temperature [°C (°F)]
...
Kia Niro 2017 (DE HEV) Service Manual: Front Impact Sensor (FIS) Repair procedures
Removal
1.
Disconnect the battery negative terminal, and wait for at least thirty
seconds before beginning work.
2.
Disconnect the front impact sensor connector (A).
3.
Loosen the mounting bolts. Remove the ...
