NEUTRAL GROUNDING TRANSFORMERS
For Neutral Grounding and Custom Applications
With over 35 years in the business, Acutran Transformers single phase neutral grounding transformers or three phase Zig-Zag transformers are built to your specifications.
Dry-type Zig-Zag grounding transformers are another example of Reliable Custom Transformers being built by Acutran.
Neutral grounding dry-type transformers are special purpose transformers that provide a grounding path for a delta connection or an ungrounded wye.
What is a Neutral Grounding Transformer?
Generally used to protect an isolated 3-phase system in the event of a line-to-ground fault, grounding transformers provide a lower impedance path-to-ground for ground faults which shields the non-faulted phases from voltage spikes.
Neutral grounding transformer units aren’t typically used in commercial or industrial applications because they do cost a little more than your conventional dry-type transformer. But if you need a ground – this is the way to go.
Acutran Custom Neutral Grounding Transformer Features
|Primary Voltage||480V, 600V, 4160V, 12470V, 13800V or other custom voltage|
|Continuous Current||2A, 5A, 25A, 50A or other custom voltage|
|Fault Current||Per customer requirement|
|Fault Duration||5 sec, 10 sec, or other custom duration|
|Insulation System||180°C or 200°C|
|Varnish||Vacuum Pressure Impregnation|
|Options||X/R Ratio, Impedance Values, Enclosures, Neutral Grounding Resistor, Fuses and Switches|
How Do You Spec a Zig-Zag Transformer?
When you spec a zig-zag transformer you have to consider the following:
- Continuous neutral current
- Neutral fault current and duration
- Line voltage and BIL
- Impedance requirement
- Temperature rise
- Enclosure type
- Special items