Hyundai Ioniq: High Voltage Battery Control System / Main Relay. Description and operation
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.

[PRA Operation Sequence]


Removal1.Turn the ignition switch OFF and disconnect the auxiliary 12V battery negative (-) terminal.2.Remove the safety plug cover (A).3.Unfasten the hook (A) and then remove the safety plug (C) by pulling the lever (B) to the direction of arrow...
Specification
Item
Specification
ContactRated Voltage (V)450Rated Current (A)80CoilOperating Voltage (V)12Resistance (Ω)20...
Other information:
WARNING
Always follow these instructions when recharging your vehicle's battery to
avoid the risk of SERIOUS INJURY or DEATH from explosions or acid burns:
Before performing maintenance or recharging the battery, turn off all
accessories and place the Engine Start/ Stop button in the OFF position...
C..
Categories

1. Engine oil filler cap
2. Engine oil dipstick
3. Engine coolant cap
4. Engine coolant reservoir
5. Inverter coolant reservoir
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