Power Measurement using CT & PT Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-12966
Indian Lab Suppliers supplies the Power Measurement using CT & PT (Product ID: 12966) as part of its electronics engineering lab equipment range. It shows how current and potential transformers are used to measure current, voltage, power and power factor in a single-phase circuit.
Quick Answer
A variac (0–270 V, 5 A) feeds a rheostat load, and the readings taken directly on two digital voltmeters and two digital ammeters are compared with those taken through the instrument transformers. The CT (ratio 1:10, 2 A secondary) sits on the panel so students can change its primary turns and see the effect on the secondary current and the meter reading. Two PTs give 230/115 V (2:1) and 230/57.5 V (4:1), and a digital wattmeter (15–1500 W) gives power, from which power factor is calculated.
Key Specifications
| Parameter | Detail |
|---|---|
| Mains supply | 230 V ±10%, 50 Hz |
| Variac | Input 230 V AC; output 0–270 V AC; 5 A |
| Ammeters (2) | 0.1–5 A AC, 0.01 A resolution |
| Voltmeters (2) | 10–300 V AC, 1 V resolution |
| Wattmeter | 15–1500 W, 1 W resolution |
| Current transformer | Ratio 1:10; secondary 2 A; changeable primary turns |
| Potential transformers | PT1 230 V / 115 V (2:1); PT2 230 V / 57.5 V (4:1) |
| Rheostat | 220 Ω, 2.8 A |
| Protection / size | SPN MCB 2 A; W 600 × D 350 × H 450 mm, about 22 kg |
Where This Is Used
Used in electrical measurements laboratories when instrument transformers and meter scaling are taught. Never open a CT secondary while primary current flows, since a dangerous voltage can appear; keep the panel earthed. See also Understanding Calibration of Energy Meter (Product ID: 12957) and 3-Phase Parameter Measurement (Product ID: 12974). Browse the full Electronics Engineering Lab Equipment range or related Electricity and Magnetism products.
Frequently Asked Questions
Can the CT primary turns be changed?
Yes, the CT is mounted on the panel for that purpose.
Which PT ratios are provided?
2:1 (230/115 V) and 4:1 (230/57.5 V).
Is a load included?
Yes, a 2.8 A rheostat is supplied.
Related Categories
Electronics Engineering Lab Equipment · Electricity and Magnetism · Electronics Lab Equipment
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