11kV CT PT Manufacturer in India
Amrest Electricals Limited manufactures and supplies 11kV Current Transformers (CT) and Potential Transformers (PT) for power distribution, energy metering and protection systems across India and export markets, built to customer specifications.
11kV current and potential transformers
11kV Current Transformer (CT)
Steps down high primary current to a standard 1A or 5A secondary, so meters, relays and monitoring instruments can measure it safely. See our full range of current transformers.
- Metering CTs for billing and energy measurement
- Protection CTs for relay operation during faults
- Dual-core / multi-core CTs in a single unit
- Resin cast indoor and outdoor designs
- Custom ratios, classes and dimensions
11kV Potential Transformer (PT)
Also called a Voltage Transformer (VT). Converts 11kV to a standard 110V or 110V/√3 secondary for meters, relays and control equipment. See our 11kV PT page.
- Single-phase and three-phase PTs
- Stable, accurate voltage transformation
- For metering and protection circuits
- Resin cast indoor and outdoor designs
- Durable build for utility environments
Typical technical specifications
| Parameter | 11kV CT | 11kV PT |
|---|---|---|
| System voltage | 11kV | 11kV |
| Highest system voltage | 12kV | 12kV |
| Frequency | 50 Hz (60 Hz on request) | 50 Hz (60 Hz on request) |
| Primary rating | As per requirement | 11kV or 11kV/√3 |
| Secondary rating | 1A or 5A | 110V or 110V/√3 |
| Accuracy (metering) | 0.2, 0.2S, 0.5, 0.5S, 1.0 | 0.2, 0.5, 1.0 |
| Accuracy (protection) | 5P10, 5P20, PS | 3P |
| Burden | As per requirement | As per requirement |
| Installation | Indoor / Outdoor | Indoor / Outdoor |
| Insulation | Epoxy resin cast / Oil cooled | Epoxy resin cast / Oil cooled |
Final specifications depend on your system design, applicable IS/IEC standards and project requirements. Our technical team confirms the right selection before manufacturing.
Why choose AMREST
- In-house manufacturing: quality control from design to dispatch
- Custom engineering: ratio, class, burden and dimensions built to your needs
- Metering and protection expertise across CTs, PTs and metering units
Built for projects
- Bulk and project supply for utilities, EPC contractors and panel builders
- Domestic and export: India, Middle East, Africa and Southeast Asia
- Pre-order technical support to get the specification right the first time
Where they are used
- 11kV distribution substations
- HT switchgear and VCB panels
- CT PT metering units
- Metering cubicles
- Utility and DISCOM energy metering
- Industrial plants and factories
- Solar and renewable energy projects
- Commercial and infrastructure projects
- Railway and power plants
What to send us
Share as many of these details as you have, or send your datasheet or BOQ directly.
Manufacturer, exporter and supplier
We supply 11kV CTs and PTs for India and for projects in the following countries and regions:
- India
- United Arab Emirates
- Saudi Arabia
- Bahrain
- Iraq
- Kuwait
- Oman
- Qatar
- South Africa
- Zambia
- Tanzania
- Ghana
- Nepal
- Bhutan
- Bangladesh
- Indonesia
- Kenya
- Malaysia
- Turkey
- Zimbabwe
- and other countries
Frequently asked questions
What is the difference between a CT and a PT?
A CT reduces high current to a measurable level, while a PT reduces high voltage to a measurable level. Both are used together in metering and protection systems.
What secondary outputs are available for 11kV CTs?
11kV CTs are usually supplied with a 1A or 5A secondary. The right choice depends on your meter or relay and the cable length in the panel.
Do you supply both indoor and outdoor 11kV CT PTs?
Yes. We supply resin cast units for indoor panels and outdoor units for substations and open installations.
Can AMREST make CTs with custom ratios?
Yes. Ratios, accuracy classes, burden and dimensions can be customised to your project specification.
Do you supply complete CT PT metering units?
Yes. Along with individual CTs and PTs, we manufacture complete 11kV CT PT metering units and metering cubicles.