Kia Niro: High Voltage Battery Control System / Pre-Charge Resistor Description and operation

Description

Built into the Power Relay Assembly (PRA), the Pre-Charge Resistor protects the high voltage circuit by limiting the current while the inverter capacitor is being charged.

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)

Pre-Charge Resistor Specifications
Specification Item Specification Resistance (Ω) 40 [20°C (68°F)] Rated power (W) 40 ...

Pre-Charge Resistor Schematic diagrams
Circuit Diagram [B03-C] (Relay Control) [B03-S] (Relay Control) ...

Other information:

Kia Niro 2017 (DE HEV) Service Manual: Curtain Airbag (CAB) Module Repair procedures
Removal 1. Disconnect the battery negative terminal, and wait for at least three minutes before beginning to work. 2. Remove the roof trim. (Refer to Body (Interior and Exterior) - "Roof trim assembly") 3. ...

Kia Niro 2017 (DE HEV) Service Manual: Room Lamp Repair procedures
Removal    • Put on gloves to prevent hand injuries. • When removing with a flat-tip screwdriver or remover, wrap protective tape around the tool ...

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