| Brand | Vziman |
| Model NO. | Zig-Zag Liquid Filled Pad Mounted Grounding Transformer 30kV 33kV 34.5kV |
| Rated frequency | 60Hz |
| Rated capacity | 50000kVA |
| Series | Z |
5000 KVA Zig Zag Grounding Transformer Pad Mounted Liquid Filled 27600GrdY CSA ANSI IEEE Standards UL/cUL Certification
Summarization
The Zig-Zag grounding transformer is a core grounding device that protects system components from fault currents by establishing an artificial neutral point for grounding resistors. As a specialized Pad Mounted grounding transformer, it blocks positive and negative sequence currents while enabling zero sequence currents during faults, ensuring reliable system protection. This liquid-filled 5000 KVA model, a high-performance Zig-Zag grounding transformer, serves as a cost-efficient high-impedance grounding solution. Vziman’s precision-engineered product meets CSA, ANSI, IEEE standards and holds UL/cUL certification, delivering decades of durability in harsh industrial environments where Pad Mounted grounding transformer is widely deployed.
Advantages of Zig-Zag Grounding Transformer
Zig-Zag Grounding Transformer Main data
| Transformer Configuration | Liquid Filled Pad Mounted |
| Transformer Feed Type | Radial Feed |
| Operation | Grounding Transformer |
| Phase | Three Phase |
| Capacity | 5000 KVA |
| Vector Group | YnD |
| Primary Voltage | 27600GrdY/15935 |
| Primary BIL | 150 KV |
| Frequency | 60 Hz |
| Temperature Rise | 65°C |
| Insulation Rating | Class A Insulation - 105°C |
| Cooling Class | KNAN; Self-Cooled |
| Efficiency Standard(s) | Meets DOE 2016 Standards, Meets CSA Standards Meets ANSI/IEEE Standards |
| K-Factor Rating (Harmonic Mitigation) | K-1 (Standard) |
| Winding Material | Copper |
| Ambient Temperature Rating | 45°C |
| Enclosure Rating | NEMA 3R Weatherproof Wiring Cabinet, Sealed Tank |
| Dimensions* | 65''-W x 60''-D x 62''-H |
| Total Weight (Liquid Filled)* | 4,520 Lbs |
| Efficiency % | 99.00% |
| No Load Loss (in watts) | +/- 400W |
Advantages of Zig-Zag Grounding Transformer
Pad Mounted grounding transformer Factory product photos

The Zig-Zag grounding transformer (liquid-filled type) is perfectly matched with the Pad Mounted grounding transformer structure for medium-voltage power systems. This combination ensures stable artificial neutral point formation in 30kV-34.5kV grids, effectively limiting fault currents and suppressing harmonics. The Pad Mounted grounding transformer’s compact outdoor design pairs with the Zig-Zag grounding transformer high-impedance grounding performance, making it ideal for medium-voltage industrial parks, outdoor substations, and commercial distribution networks.