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ABB 216NG63 POWER SUPPLY

The ABB 216NG63 is an auxiliary DC power supply unit / DC-DC converter used primarily in ABB RE.216 / REG216 protection systems. Its main purpose is to convert a high-voltage station battery supply into a stable, isolated 24 V DC auxiliary supply for the protection rack and I/O modules.

Product Positioning

• Manufacturer: ABB
• Model: 216NG63
• Type: Auxiliary DC Supply Unit / DC-DC Converter
• System: ABB RE.216 / REG216 protection system
• Common ordering reference: HESG441635R1 is associated with 216NG63 in supplier documentation.

Core Functions

1. DC voltage conversion — converts station battery voltage to 24 V DC.
2. Electrical isolation — provides galvanic isolation between the input station battery and the 24 V output.
3. Protection — incorporates output short-circuit and overload protection.
4. System power distribution — supplies the electronic modules and I/O modules installed in the protection rack.

Key Technical Parameters

ABB documentation specifically distinguishes the three 216NG6x versions: 216NG61 = 48/60 V DC, 216NG62 = 110/125 V DC, and 216NG63 = 220/250 V DC.

Design Features

The 216NG63 occupies three rack partitions and can be installed as a single supply or as part of a redundant two-supply configuration. With redundant supplies, the RE.216 system can continue operating as long as one 24 V supply remains available.

Typical Applications

• ABB REG216 numerical protection
• ABB RE.216 protection and control systems
• Substation protection equipment
• Generator protection systems
• Industrial electrical protection/control racks
• Station-battery powered protection systems

Maintenance Considerations

When servicing a 216NG63, the station battery input must be treated as hazardous DC voltage. ABB documentation states that electronic modules should only be inserted or removed when the auxiliary supply is switched off; where two redundant 216NG6x units are installed, both supplies must be switched off before working on the rack.

Overall Evaluation: The 216NG63 is the high-voltage-input member of ABB's 216NG6x auxiliary supply family, designed specifically to provide isolated 24 V DC power from a 220/250 V DC station battery. It is a critical power-conversion component rather than a conventional PLC power supply.