Current Transformer CT Manufacturer,Supplier and Exporter in India
Product Code : EL-PET-1448
Jlab Export is a leading Current Transformer CT Manufacturer,and suppliers in India
Current Transformer CT (code EL-PET-1448) is a power electronics training board for studying a current transformer (CT) with a 2 A input and a 200 mA output, a 10 : 1 ratio. Two 3½-digit digital AC ammeters cover the 0–2 A and 0–200 mA ranges, and three switched 100 W bulbs form the load. JLab, Jain Laboratory Instruments Pvt Ltd, makes the board at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Object | To study the current transformer (CT) |
| Current transformer | Input current 2 A, output current 200 mA, ratio 10 : 1 |
| Ammeter 1 | Digital AC ammeter, 3½ digits, seven-segment display, range 0–2 A |
| Ammeter 2 | Digital AC ammeter, 3½ digits, seven-segment display, range 0–200 mA |
| Load | Three 100 W bulbs, controlled by three separate switches |
| Other components | Adequate number of other electronic components |
| Mains switch and fuse | Mains ON/OFF switch; fuse 1.5 A |
| Mains supply | 230 V, 50 Hz AC |
| Patch cords | Adequate number, stackable, 4 mm spring-loaded plugs, ½ metre long |
| Terminals | Terminals and sockets at appropriate places on the panel for connections and observation of waveforms |
| Operating instructions | Detailed, with the object, theory, design procedures, report suggestions and book references |
| Weight | 3 kg (approx.) |
| Dimensions | W 340 × H 110 × D 210 |
| Other apparatus required | Variac, input 230 V AC, output 0–270 V AC at 2 A |
| Quality check | Each board is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-PET-1448 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Current Transformer Board Used For?
A current transformer reproduces the current in a power circuit as a much smaller secondary current in a fixed ratio, so ordinary meters and protection relays can measure or monitor large currents without carrying them. On this board the load is changed by switching the bulbs in or out and the variac used with the board varies the supply voltage, so students can compare the two ammeter readings with the CT’s rated ratio at different load currents. The experiment suits electrical measurement and power electronics practicals for science and engineering students.
What to Specify When Ordering
- Quantity — the number of CT boards needed.
- Variac — whether a variac should be quoted with each board.
- Companion trainers — other electrical measurement or power electronics boards for the same lab.
Frequently Asked Questions
What does the 10 : 1 ratio mean?
When 2 A flows in the primary, the secondary delivers 200 mA, one tenth of the primary current. Comparing the two ammeter readings over several load settings shows how closely the CT follows its rated ratio.
Why must the secondary of a CT not be left open?
The secondary current normally opposes the magnetising effect of the primary current. If the secondary circuit is opened while the primary carries current, that opposition disappears, the core is driven hard into saturation and a dangerously high voltage can appear across the secondary terminals. For this reason a CT secondary is kept connected to its meter or shorted.
How is the load varied?
Three 100 W bulbs are each controlled by their own switch, so the load can be increased one bulb at a time; the variac used with the board allows the supply voltage to be adjusted as well.
What other apparatus is required?
A variac with a 230 V AC input and a 0–270 V AC output at 2 A. JLab’s Dimmerstat Variac and Autotransformer is a separate item that can be quoted on the same enquiry.
What should an export enquiry include?
The number of boards, the destination country and port or city, delivery terms such as FOB or CIF, any packing or labelling requirements and a tender reference if applicable.
Who manufactures the Current Transformer CT board?
JLab, the trading name of Jain Laboratory Instruments Pvt Ltd, makes it at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a manufacturer of electrical and electronics lab equipment in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The company’s GSTIN is 06AADCJ9848D1ZE and its Legal Entity Identifier is 549300DTGS77DGYD6N03. The CT board is built at JLab’s own works and not sourced from a trader, so colleges, institutes, dealers and importers buy straight from the manufacturer, every board is visually inspected before dispatch and repeat orders are made at the same works. JLab exports worldwide and ships to buyers in every region — for example Niger in West Africa, Mozambique in East Africa, Costa Rica in Central America and the Caribbean, Tajikistan in Central Asia and Angola in Central Africa. The JLab lab tenders page covers tender purchases.
Related Instruments and Trainers
- Dimmerstat Variac and Autotransformer — a variable autotransformer giving 0–270 V AC, offered in 2, 4, 6 and 8 A capacities, sold separately.
- Variac Single & Three Phase — a variac in a vented metal box, made in single-phase and three-phase versions.
- Three Phase Full Wave Rectifier — a power electronics board with digital panel meters for DC voltage and load current.
- Lamp Dimmer Using Diac and Triac — a self-contained board for diac–triac phase control of a lamp.
More boards are listed under Power Electronics Trainers in the Electronics Lab Equipments range.
Request a Quote
Use the Add To Cart button on this page or the contact page to request a quotation, giving the number of boards, the delivery destination and whether variacs or other trainers should be included.
Last updated: 22 October 2026
