Explore our transformers
Cable current transformer & shaft current transformer
Do you need a current transformer for measurement or relay protection? We manufacture round or rectangular cable current transformers, shaft current transformers, intermediate current transformers and divisible current transformers according to SS-EN 61869-2.
You can choose a model from our standard range or have a transformer customized for your installation.
Send your specifications and we will get back to you with a technical proposal and quote.
Cable current transformers
For installation around cables or rails in low and medium voltage installations. Can be adapted as needed.
Common uses
- Energy measurement
- Instrumentation
- Relay protection
TECHNICAL DATA
- Primary current up to 10,000 A depending on model.
- Secondary current from 1 A – 5 A.
- Insulation class 0,72/3 kV.
- 50/60Hz.
- Accuracy class: 0.1 – 3
Versions
- Round opening
For round cable entries in electrical panels and switchgear. - Rectangular opening
For rails and larger cable packages. - Divisible design
For installation without dismantling existing cable/shaft.
Medium current transformer
Used when you have low primary current but need standardized secondary current (1A – 5A) for measurement or control systems. Can be adapted as needed.
Technical information
Shaft current transformer
Used to measure & monitor unwanted currents in bearings, shafts and rotating machines.
Technical information
- Primary current: 500-1000 A
- Burden: 5 VA
- Accuracy class: 1 – 3
Custom current transformer
Do you need a different opening, different class or special condition?
We manufacture according to your requirements and respond to:
- Primary current
- Secondary
- Class
- Burden
- Opening dimensions
- Accuracy class: 0.1 – 3
Contact us!
Do you need more information about our transformers or would you like to place an order? Don't hesitate to contact us! Our experts at Nordtrafo are ready to help you.