Determination of fusing characteristics and fusing factor of given fuse Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12932
Indian Lab Suppliers supplies the Determination of fusing characteristics and fusing factor of given fuse (Product ID: 12932) as part of its electronics engineering lab equipment range. It is a set-up for plotting the time-current characteristic of a fuse wire and finding its fusing factor.
Quick Answer
A built-in variac (230 V in, 0-270 V at 2 A) controls a high-current transformer rated 2.25 V at 200 A, which drives current through the fuse wire under test. A digital meter reads the current on 20 A and 200 A ranges, and a quartz digital stop clock (up to 999.9 s, 0.1 s resolution, toggle start/stop and push-button reset) times how long the wire takes to melt. Plotting fusing time against current shows the inverse-time characteristic, and the fusing factor is the minimum fusing current divided by the rated current. Copper and tinned-copper fuse wire are listed. The set-up weighs about 14 kg and runs from 230 V ±10%, 50 Hz mains. The wire gets very hot and may spatter when it melts: keep hands clear of the wire, wear eye protection, and let the holder cool before touching it.
Key Specifications
| Parameter | Detail |
|---|---|
| Variac | 230 V AC in; 0-270 V, 2 A out |
| High-current transformer | 2.25 V at 200 A output |
| Ammeter | Digital, 20/200 A AC |
| Timer | Digital stop clock, 999.9 s, 0.1 s resolution, quartz controlled |
| Fuse wire | Copper; tinned copper |
| Mains | 230 V ±10%, 50 Hz; ON/OFF switch, fuse and indicator lamp |
| Weight / size | About 14 kg; W 412 × H 150 × D 310 mm |
Where This Is Used
Used in protection practicals with the Fuse, MCB & Bimetallic Relay Characteristics Trainer (Product ID: 12854) and the MCB and HRC Fuse Testing System (Product ID: 12976). Browse the full Electronics Engineering Lab Equipment range or related Electricity and Magnetism products.
Frequently Asked Questions
What is the fusing factor?
Minimum fusing current divided by the current rating of the fuse.
Why is the characteristic called inverse time?
The larger the current, the faster the fuse melts.
How is the melting time measured?
With the built-in digital stop clock to 0.1 s.
Related Categories
Electronics Engineering Lab Equipment · Electricity and Magnetism · Engineering Lab Equipment
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