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

Kia Niro 2017 (DE HEV) Service Manual / Hybrid Control System / 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) ...

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