1. When was PECO established?

PECO Industries was established in Ahmedabad, India in 1989.

2. Where is PECO located?

The office premises and factory of Peco Industries is situated in Gota – an industrial area located in the outer limits of Ahmedabad city. The location is such that it is easily accessible from domestic as well as international airport.

3. What does Sell Offer and Purchase Offer section implies?

Our Sell Offer section is designed for those manufacturers/suppliers who wish to sell their products to us. The products might be raw materials, machinery, testing instruments etc. Such manufacturers can quote their most competitive offer along with other details and will be short-listed as regular vendors at a later stage.
Our Purchase Offer section is designed for our customers who wish to make enquiries about our products in terms of prices, purchase requirement etc. Such customers can fill the details and submit the same for quick response.

4. How can I find technical details about various products?

The technical data is available in the products section under relevant product headings and also the download facility is available for various graphs & dimensional drawings in the download section in pdf format.

5. Where can I find certification?

The ISI and ISO certification is available in the quality section. Also, our company’s quality certificate is available in the same section.
We have a very well certified and tested range of products. For test certificates of the specific products, please email us with your request mentioning your organization details and purpose of test reports and we will arrange to send you the required test reports.

6. Which types of products are basically manufactured and marketed by PECO?

The product range consists of Fuse Links, Fuse Base, DOL Motor Starters, FASD Motor Starter, SASD Motor Starter, AC Air Break Contactors and Thermal Overload Relay. Within these products, we have wide range of models and our approach always being vertical expansion within a particular product range.

7. What do 'HRC', 'breaking capacity' and 'time current curve' mean?

'HRC' and 'breaking capacity' mean 'high rupturing current' or more commonly, 'high breaking capacity'. This is a fuse link, the body of which is usually made from a high-grade ceramic or composite material and an interior filled completely with sand, which has been tested to safely interrupt very high fault or short circuit levels of current.
An IS: 13703 fuse link is tested to 80kA (80,000 amps) without it physically exploding or suffering external damage. The fuse link will clear the fault and be left open circuit afterwards. This is said to be a 'HRC' or 'high breaking capacity' fuse link. Consequently, most small dimension glass fuses are 'LBC' or 'low breaking' capacity.

'Time Current Curve' is the data used to check if a given fuse link will cope with, for example, starting a motor. The data can also be used to check discrimination between fuse links. The vertical axis of the graph displays time (in seconds), the horizontal axis displays current (in amps). The curved line depicts the melting curve of the fuse link's elements. A value shown below this line on the graph means that the fuse element will not begin to melt, a value above the line means that it will. Using such information you can answer application queries, for example: You have a motor which takes six seconds to start, using 80 amps of current. Using the time-current curve this information is plotted onto the graph. If the value plotted is below the melting curve of the selected fuse link, the element(s) will not melt. However if the value is above the curve the element(s) will melt.

8. Does a fuse use energy?

When a current passes through a fuse link, a small amount of energy is dissipated due to the fuse links resistance. The maximum power dissipation for each type/rating is specified in the relevant standards.

9. How do I select the current rating?

Every fuse link has a specific ampere rating. In selecting the ampere rating of a fuse link consideration must be given to the type of load and circuit requirements. The ampere rating of a fuse normally should not exceed the current carrying capability of the circuit. For instance, if a conductor is rated to carry 20 amperes, a 20-ampere fuse is the largest that should generally be used.
Will high ambient temperatures affect the current rating of a fuse link?
Fuse links are thermal devices and as such may require some de-rating when used at elevated ambient temperatures. Fuse links can carry rated current up to an ambient of 35—C. When the ambient temperature is higher than 35—C de-rating may be required. A simple and safe rule is to de-rate by 0.5% per degree centigrade above 35—C. The voltage rated is not dependent upon ambient temperature

10. Is it useful to have a low I2t?

Yes — the energy released during a short circuit, if not limited, can strongly damage part or whole installations.
Two specific parameters affect the Operating I2t:

• Power factors

The lower the power factor the higher the energy, I2t.

• The voltage

The higher the voltage the higher the energy, I2t.
Fuse links considerably limit this energy. For instance, without a fuse link an asymmetrical short circuit current of 10,000 A at 230V A.C. could pass through the circuit during several cycles. During the first cycle, the I2t could be as high as 4,000,000A2S.
In these conditions a 100A gG fuse link will limit the I2t value to about 80,000A2s, i.e. only 2% of thevalue during the first half cycle.

11. Why is breaking capacity important?

A protective device must be able to withstand the destructive energy of short circuit currents. The rating, which defines the capability of a protective device to maintain its integrity when reacting to fault currents, is termed its breaking capacity or "interrupting rating".

12. How do I select the voltage rating?

Fuse links are voltage sensitive devices and it is important to note that the satisfactory operation of a fuse link under fault conditions is dependent on the system voltage. They must not therefore be installed in circuits above their voltage rating. They can however be used satisfactorily in circuits at lower voltages.
For example, to protect a 400V system a 400V, 500V or 690V fuse link can be used, but not a 230V fuse link.

13. Is the peak current (cut-off) important?

Short circuits are dangerous for several reasons:

· The destructive electrodynamics effects increase as the square of the peak current value, during the short circuit.
· The destructive thermal effects increase in proportion with the I2t reached during this short circuit.

Fuse links are designed to drastically limit both these effects.
For the prospective short circuit current of 10,000 Amp rms with a totally asymmetrical current, the maximum value could reach 25,000 Amp peak. A 100A gG fuse link limits the first peak to 8,000 Amp, less than the third part of the prospective maximum value. The destructive electrodynamics effects are reduced by 90% (8,000/25,000)2.

14. Why is current limitation so important?

If a protective device cuts off a short circuit current in less than one half cycle, before it reaches its total available (and highly destructive) peak value, the device is "current limiting". It restricts fault currents to such low values that a high degree of protection is given to circuit components against even very high short circuit currents. This minimises the needs of other components to have high short circuit current "withstand" ratings.

If not limited, short circuit currents in industrial applications can reach tens of thousands of amperes in the first half cycle after the start of a fault. The heat that can be produced in circuit components by the immense energy of short circuit currents can cause severe insulation damage or even explosion. At the same time, huge magnetic forces developed between conductors can crack insulators and distort and destroy bracing structures. It is therefore important that a protective device limits fault currents before they reach their full potential level. A fuse interrupts a short circuit current very quickly. Consequently the energy let-through is very low.

15.Why is over current protection required?

There are many factors that contribute to the occurrence of over currents, such as general deterioration and accidental damage. The effect of over current on electrical equipment can be dramatic if no appropriate protection is provided:

• Distortion of conductors or bus bars.
• Vaporisation of metal.
• Ionisation of gases.
• Arcing, fire and explosion.
• Insulation damage.

Apart from being hazardous to personnel, significant economic losses can result from downtime and repairs required to restore damaged equipment. The most widely used and respected over current protective device is the fuse link