ABB 216NG63A Replacement DC Supply Unit

The ABB 216NG63A Replacement DC Supply Unit is an auxiliary DC supply unit of the ABB REG 216 numerical generator protection system. Per the manual, the 216NG61/216NG62/216NG63 auxiliary DC supply units transform the station battery voltage UB to 24 V DC and provide electrical insulation between input and output. The 216NG63A is the supply unit that feeds the REG 216 protection rack from the station battery — a role backed by the redundant DC/DC power supply architecture described for REG 216 generator protection.

Key Specifications:

• Brand: ABB
• Model: 216NG63A
• Type: Auxiliary DC Supply Unit
• System: REG 216 — Numerical Generator Protection
• Function: Station battery voltage (UB) to 24 V DC conversion, input/output electrical isolation
• Redundancy Note: REG 216 racks typically fed by one or two redundant DC/DC supplies from independent station batteries 
• Country of Origin: Sweden 

ABB 216NG63A Replacement DC Supply Unit is the power stage that brings station battery energy into the REG 216 protection rack: it converts the station battery voltage to clean, isolated 24 V DC, so the protection electronics run on a regulated rail rather than directly on raw battery voltage. Input/output isolation keeps protection circuitry separated from the battery circuit, supporting the redundancy philosophy of REG 216 generator protection, where one or two DC/DC supplies feed the rack from independent station batteries. A documented spare for REG 216 generator protection panels.

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