Toroidal Current Transformer
The Sigma Toroidal Current Transformer works with a low-voltage (LV) circuit breaker. It provides leakage current protection, a tripping coil, and a leakage current detection relay. These parts work together to protect against electrical faults. They also strengthen safety in your setup.
Description
Main Features
- Current rating available from 40A up to 630A
- Rated insulation voltage: 690 V AC
- Rated impulse withstand voltage: 8kV
- 4 poles configuration
- Provides thermal, magnetic, and leakage current protection together
- Rated ultimate short-circuit breaking capacity: 36kA and 50kA
- Built-in LED display that shows residual current level
- Adjustable earth leakage current threshold: 1A, 0.3A, 0.5A, or 1A (selectable)
- Adjustable earth leakage current delay time: 1, 0.3, 0.5 seconds (selectable)
- Can be manufactured with a shunt trip relay or auxiliary contacts upon request
- For units of 250A and above, we offer the option to produce with busbars
To get the best results from this toroidal current transformer, remember these key points:
- All phase cables and the neutral cable must go through the toroidal CT.
- The ground wire should never pass through the ring-type current transformer.
- Route cables through the center opening of the current transformer ring when you can.
Why Choose This Toroidal Current Transformer?
This ring core type CT handles the toroidal transformer inrush current easily. It’s a great option for residential and industrial use. If you need a toroid current sensor for a protection relay, this unit works well. It also provides a high-current toroidal transformer for larger panels. You can count on its reliable performance.
The ring current transformer design keeps magnetic fields balanced during normal use. If there’s an imbalance, it quickly detects it and trips the circuit. If you’re worried about Wapda electrical safety standards, using a toroidal-type current transformer is a wise choice.
Frequently Asked Questions (FAQs)
What is a Toroidal Current Transformer (CBCT)?
A toroidal current transformer, or ring-type transformer, is a donut-shaped electrical device. It senses unbalanced currents in live and neutral wires. If a leakage path is detected, it sends a signal to a relay or breaker to disconnect the power. This helps prevent electric shocks and fire risks.
What is the function of a toroidal transformer?
The main job of a toroidal current device is to detect earth leakage or ground faults. Unlike regular transformers, it does not step the voltage up or down. Instead, it monitors the sum of currents passing through its center. When everything is normal, the total is zero. If there is a leak, it creates a small signal that triggers protection equipment. This is why it is also known as a ground fault current transformer.
Where can I buy toroidal current transformers locally in Pakistan?
You can buy directly from Jawad Electric Company. We serve customers across Pakistan, including Lahore and other major cities. If you are searching for a current transformer near me, just contact our team. We offer an original warranty on every unit, and you can order online or visit our nearest outlet.
Ready to Order?
Stop looking for a current transformer nearby. Jawad Electric makes it simple. We offer real toroidal CT units with an original warranty. These meet Wapda’s electrical safety standards.
We have the right ring current transformer for your home distribution board. If you need a high-current toroidal transformer for an industrial panel, we’ve got that too.
Order your toroidal current transformer today. Delivery available across Pakistan, including Lahore.