Acutran

Zig Zag Transformers

Zig Zag Transformers

Since 1983, Acutran Transformers has been designing and manufacturing Zig-Zag transformers in either individual transformers or in neutral grounding systems.

A Zig-Zag transformer is a special-purpose three phase transformer with a zigzag or “interconnected star” winding connection. Zigzag transformers are 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.

Acutran 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.

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

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