HRC Fuse Link

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A HT HRC Fuse is a medium voltage,, current limiting, fuse with a high interrupting rating,. The PT fuse is used to protect the primary windings of a potential transformer or control power transformers (CPT). A PT fuse is a small dimension ferrule type fuse that mounts in standard clips. Blown fuse indication is available on some PT fuse series. Potential Transformer fuse voltage ratings are from 0.625 kV to 15.5kV. Potential Transformer fuse current ratings range from 0.05 to 5 amps. Interrupting ratings range from 50 to 120 kA.

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A PT Fuse (Potential Transformer) is a medium voltage,, current limiting, fuse with a high interrupting rating,. The PT fuse is used to protect the primary windings of a potential transformer or control power transformers (CPT). A PT fuse is a small dimension ferrule type fuse that mounts in standard clips. Blown fuse indication is available on some PT fuse series. Potential Transformer fuse voltage ratings are from 0.625 kV to 15.5kV. Potential Transformer fuse current ratings range from 0.05 to 5 amps. Interrupting ratings range from 50 to 120 kA.

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Phoenix High Voltage HRC Fuse Link consist of a ceramic body with a Silver fuse filament (based on Ampere rating) and a striker pin mechanism. In case of any fault, the striker pin comes out with pre defined force.(This striker pin further can be used to trip equipment it has to protect.) The HRC Fuses are available in both DIN as well as BS type.

HRC fuses provide a faster option for tripping as against relay based protection. Our HRC fuses can provide accurate protection for transformers and capacitors against Short Circuits / Over Current.HRC Fuses are designed to meet the stringent requirements necessary for Medium Voltage Distribution System Protection. PCE Systems HRC Fuses are suitable for both Cable as well as Transformer Protection. They provide reliable short circuit protection in 11/22/33kV Distribution Systems.
Standards: IEC 60282-1, BS 1362, VDE 0670

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In this of fuse, the breaking capacity is increased by using two or more separate silver elements in parallel. The sizes of the elements are varied so that the elements fuse in a sequence, one after the other. The body is made up of cylindrical ceramic material and is closed by metallic end caps to which the fuse elements are fixed. The fuse elements are surrounded by silica, which acts as the arc quenching medium. An indicator, normally a fine resistance wire, is connected in parallel to the fuse element. In this type of fuse, the whole fault current is not shed immediately due to the usage of more than one fuse element. This construction avoids voltage transients in the circuit.

Advantages of HRC fuses

1. When compared to other circuit interrupters of same capacity HRC fuses are the cheaper one.
2. Simple and easy to install.
3. No maintenance required.
4. High breaking capacity.
5. They are consistent in performance.
6. Their inverse time characteristic makes them much suited for overload protection.
7. They are capable of clearing high as well as low currents.
8. Quick operation.
9. They are capable clearing high as well as low currents.
10. During severe faults, an HRC fuse breaks the circuit before the peak current of the fault is reached.