Three Phase Zig-Zag Transformer Original manufacturer-10kV 10.5kV 11kV

Three Phase Zig-Zag transformer Description

Since 2008, Our Transformers has been designing and manufacturing Three Phase Zig-Zag transformers in either individual transformers or in neutral grounding systems.

A Three Phase Zig-Zag transformer is a special-purpose three phase transformer with a zigzag or “interconnected star” winding connection.Three Phase Zig-zag transformer is used to create the missing ground in an ungrounded 3-phase system by providing a path for the neutral to ground.

Throughout the USA, many utility companies are requiring renewable power providers (Wind, Solar, Hydro) to install grounding transformers at their tie point to provide a ground reference.

Vziman’s three phase zig-zag transformer is designed to offer a low impedance, This creates a path for zero sequence components under fault conditions and prevents system voltage rise in the unfaulted phases a period this makes a three phase zig-zag transformer a very good earthing transformer. In the event that the current has to be limited during the fault condition, a suitable neutral grounding resistor can be added to the system.

Vziman Neutral Grounding Systems (single or three phase) can be combined with neutral ground fault relays and current transformers to automatically create an open circuit during the fault condition since the system cannot automatically correct itself.

Three Phase Zig-Zag transformer Standard Features

• 3 to 250 kVA
• Three Phase
• Standard voltages 480V, 600V, 4160V, 13800V or other
• Specific X/R Ratio
• Standard Fault Durations
• 200°C Insulation System
• Copper Conductors
• NEMA 3R Enclosures

Three Phase Zig-Zag transformer Optional Feature

• Integrated Neutral Grounding Resistor
• Integrated Current Transformers
• Integrated Ground Fault Relays
• Integrated Disconnect Switches
• Ground Fault Logging Systems
• 220°C Insulation System
• Custom Fault Durations
• All parameters 100% configurable