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Guangdong NRE Technology Co., Ltd., specifically model 41-040332-02G. It is commonly used as a replacement part for Uninterruptible Power Supplies (UPS), such as those from Tripplite or Forza.
Electrical Specifications
Manufacturer: Guangdong NRE Technology Co., Ltd.
Model/Part Number: 41-040332-02G.
Insulation Class: Class 130(B), meaning it is designed to operate at temperatures up to 130°C.
Safety Listing: UL File E324691.
Wire Identification (Typical for UPS Transformers)
While wire colors can vary, the following patterns are standard for this type of salvaged UPS transformer:
Primary Side (Input): Usually the side with thinner wires, often Blue and Black (for ~230V) or White and Black (for ~115V).
Secondary Side (Output): Typically the side with thicker, heavier-gauge wires designed for high current. Common outputs for UPS units are roughly 12V to 16V AC.
Testing: To safely identify the windings, use a multimeter to measure resistance. The primary winding will have a much higher resistance (often hundreds of ohms) compared to the secondary, which will have very low resistance (near zero). Electrical Engineering
Common Uses
These transformers are popular in DIY electronics for building:
12V Battery Chargers.
High-current DC Power Supplies (when combined with a bridge rectifier and capacitor).
