Get in touch: +64 3 348 8500

Our Product Range

We specialise in the design and manufacture of current and voltage transformers for the low to medium voltage electrical industry. Based in Christchurch, New Zealand, we supply network and electric companies worldwide.

Power Transformers
TWS Energy Controls provides a complete custom design service so you get exactly the right transformer to meet your specific application. We have indoor and outdoor current transformers available up to 33kV.
Tape Wound/Resin Cast CTs
TWS Energy Controls provides a complete custom design service so you get the exact transformer for your specific requirements.
Current Transformers
TWS Energy Controls manufactures a range of power transformers to suit your individual requirements. These are single or three phase up to 150kVA.

Neutral Current Transformers
TWS Energy Controls designs and manufactures two types of outdoor neutral current transformers.
Voltage Transformers
TWS Energy Controls provides a complete custom design service so you get exactly the right voltage transformer to meet your specific application. We have indoor and outdoor voltage transformers available 12kV, 24kV and up to 36kV.
Easimount/ESAA CTs
TWS Energy Controls designed the Easimount range to provide convenient and cost effective metering current transformers to suit different sized busbars and cables.

Metering Units
TWS Energy Controls has oil-insulated metering units containing both CT and VT in single or three phase combinations up to 36kV. These can either be pole or ground mounted. The units are designed as a convenient and cost effective means of installing metering class CT and VT into a power supply network.
Power Factor Chokes and Coils
Power factor chokes are used to tune power factor correction systems so that they don't suppress ripple control signals and to reduce inrush currents. TWS Energy Controls manufacture a full range of chokes up to 100kVAr systems.
Custom Designed Products
Audio Output Transformers, Standard Current Transformers, Noise Chokes, Split Core Current Transformers, Electro Magnets, Electrical Steel Cores

Design and Build
TWS Energy Controls operates a sophisticated suite of transformer design software allowing us to design a transformer even while discussing the requirements with the customer. Our manufacturing process allows us to make one or one thousand of any particular design.
Designed and Manufactured in NZ
We Offer Global Shipping
Our Partners
Circle C Transformers
WF Energy controls PTY LTD