Specifications & Dimensions

Written by Tan, Electrical Engineer @ Transformer4U | Last Updated: January 2026 | Reading Time: ~5 minutes This guide explains how to decode Westinghouse transformer serial numbers to determine manufacturing date, year, and equipment specifications. ⚡ Quick Answer: Westinghouse Serial Number Format Format: YY-xxxxx Year Position: Characters 1-2 Example: 7843512 → 1978 1. Westinghouse Serial

Written by Tan, Electrical Engineer @ Transformer4U | Last Updated: January 2026 | Reading Time: ~5 minutes This guide explains how to decode Siemens transformer serial numbers to determine manufacturing date, year, and equipment specifications. ⚡ Quick Answer: Siemens Serial Number Format Format: PP-Y-M-DD-xxxx Year Position: Characters 3 (encrypted) Example: Proprietary → Contact Siemens 1.

Written by Tan, Electrical Engineer @ Transformer4U | Last Updated: January 2026 | Reading Time: ~5 minutes This guide explains how to decode Schneider Electric transformer serial numbers to determine manufacturing date, year, and equipment specifications. ⚡ Quick Answer: Schneider Electric Serial Number Format Format: YYWW Year Position: Characters 1-2 Example: 1042 → Week 42

Written by Tan, Electrical Engineer @ Transformer4U | Last Updated: January 2026 | Reading Time: ~5 minutes This guide explains how to decode Prolec GE transformer serial numbers to determine manufacturing date, year, and equipment specifications. ⚡ Quick Answer: Prolec GE Serial Number Format Format: See GE Formats Year Position: Characters See GE Example: nan

Written by Tan, Electrical Engineer @ Transformer4U | Last Updated: January 2026 | Reading Time: ~5 minutes This guide explains how to decode Hammond Power transformer serial numbers to determine manufacturing date, year, and equipment specifications. ⚡ Quick Answer: Hammond Power Serial Number Format Format: WWYY Year Position: Characters 3-4 Example: 4223 → Week 42

Written by Tan, Electrical Engineer @ Transformer4U | Last Updated: January 2026 | Reading Time: ~5 minutes This guide explains how to decode GE (General Electric) transformer serial numbers to determine manufacturing date, year, and equipment specifications. ⚡ Quick Answer: GE Serial Number Format Format: LY-xxxxxx-R Year Position: Characters 2 (letter) Example: RG527327B → February