Protection & Control Group

P&C FUSES

Medium Voltage current limiting Fuse links

Type PCEF for indoor and outdoor use Rated Voltage 12 - 24 kV Current Rating 6 – 200A

Protection & Control Group

P&C FUSES

1. General information

P&C Medium Voltage fuse-links named PCEF are designed to protect devices in switch-gears and other equipment (distribution transformers, capacitors, motors) from thermal and dynamic effects of short circuits and overcurrents. Time-current characteristics correspond to standard IEC 60282-1, item 3.3.3. , Back-up fuse. They are suitable for installation in Indoor and outdoor switchgear

2. Features

The most significant features of P&C Medium voltage fuses are

Low temperature rise because of low power dissipation

High breaking capacity 50 kA

Reliable sealing system against humidity irruption

Low switching voltages

3. Standards

P&C Medium Voltage fuse-links comply with the following standards and specifications:

IEC 60282-1, Sixth edition 11/2005 “Current limiting fuses” “Application guide for the selection of high voltage current limiting fuse-links for transformer circuits”

IEC 60644 “Specification for high-voltage fuse-links for motor circuit applications”

IEC 60549 “High-voltage fuses for external protection of power capacitors”

4. Construction

P&C Medium voltage fuses are designed to assure stable and reliable characteristics. The glazed porcelain tube (made in Europe) is extremely high mechanical and thermal resistant. Galvanically protected contact caps made of electrolytic copper are nickel - or upon customer request silver plated. The design and method of production of the melting elements ensures precisely tolerances and stable time/current characteristics. Fuse elements are wounded on a ceramic carrier (Star-core) and electrically welded on special copper strips. The inside of the tube is filled with quartz sand with an exactly determined granulation and chemical structure. The sand guarantees good and reliable extinguishing of the electric arc. The HRC generation of fuse link type PCEF are designed and tested according to IEC Publication 60282-1 (IEC 282-1). Dimensionally the fuse links are in accordance with DIN 43625.

Protection & Control Group

P&C FUSES

P&C fuse links have the following properties:

- Low minimum breaking current - Low power losses - Low arc-voltage - High breaking capacity up to 50 kA - High current limitation.

Low power losses permit installation of these fuse-links in compact switchgear. PCEF fuses are of back-up type. They have a zone between the minimum melting current and the minimum breaking current where the fuse links may fail to interrupt. For PCEF fuse links this zone is very narrow with a minimum breaking current (I3) of less than 3 & 4 times the rated current.

5. Overvoltages

In order to be current limiting, the fuse link must generate an arc-voltage exceeding the instantaneous value of the operating voltage. The over voltage generated by the PCEF fuse link is below the maximum permissible value acc. to IEC 60282-1. The PCEF fuse link can safely be used if the system line voltage is 50-100% of the rated fuse link voltage.

6. Replacement of melted links

The fuse links can't be regenerated according to IEC Publication 60282-1. All three fuse links should be replaced, even if only one or two of the fuse links in the three phase system have operated. Exceptions are allowed when it can be verified that the fuse links have not experienced any overcurrent.

7. Nameplate

The symbols on the nameplate have the following meaning:

- In Rated current - Un Rated voltage - I3 Minimum breaking current - I1 Minimum short circuit current for which the fuse is tested.

The arrowhead on the nameplate indicates in which end of the fuse link the indicator and striker appears. Additionally this end contact of the fuse link is specially marked. PCEF-U is outdoor type.

Protection & Control Group

P&C FUSES

8. Melting times

The characteristics are equal for all rated voltages and are recorded from cold condition. In uncertain interruption zone the curves are dotted.

Protection & Control Group P&C

FUSES

Type PCEF

In = 100 A I3 < 3 x In

Un = 12 kV I1 = 50 kA

High Voltage Current Limiting Fuse-Link According to IEC 60282-1

Made In Egypt – Fax:26229977 – Mobile: 01001548838

Protection & Control Group

P&C FUSES

9. Current limitation

10. Indicator and striker pin

The PCEF fuse link is equipped with a combined indicator- and striker system, which is activated immediately when the fuse element melts. The force diagram is in accordance with the requirements of IEC 60282-1 (IEC 282-1) and DIN 43625.

PCEF fuse links are current limiting. A large short circuit current will therefore not reach its full value. The diagram shows the relation between the prospective short circuit current and the peak value of the cutoff current. Substantial current limitation results in a considerable reduction of the thermal and mechanical stress on the high voltage installation.

Prospective current [kA] (rms)

Protection & Control Group

P&C FUSES

11. Choice of fuse links

Choice of rated voltage UN :

The rated voltage of the fuse links must be equal to, or higher than the operating line voltage. By choosing the fuse link rated voltage Un considerably higher than the line voltage, the maximum arc voltage must not exceed the insulation level of the network.

Choice of rated current IN :

To obtain the best possible current limitation, and thereby also protection, IN must be chosen as low as possible compared to the rated current of the object to be protected. However, the following limitations must be taken into consideration: – The largest load current must not exceed IN. – Cooling conditions (e.g. in compact switchgear). – Inrush current of off load transformers.

For the choice of rated current of fuse links for protection of transformers, the relation between the power rating of the transformers, operating voltage and rated current of the fuse link is given in the table below.

The same table indicates the highest rated current of the low voltage fuse link (on the

low voltage side of the transformer) which gives discrimination with the high voltage fuse link. The low voltage fuse link is of the type gL (VDE) or gG/ gM(IEC).

Technical data (PCEF fuse)

Dimensions and data PCEF / 12kV

Protection & Control Group

P&C FUSES

V(Kg) Wn(watt) I1(KA) d(mm) e(mm) In(a) Order code Type

1.6 41 50 50 292 6.3 EGTF R12 J006AA PCEF 12-6

2.5 41 50 76 292 6.3 EGTF R12 J006AB PCEF 12-6

1.9 41 50 50 442 6.3 EGTF R12 J006BA PCEF 12-6

3.5 41 50 76 442 6.3 EGTF R12 J006BB PCEF 12-6

1.6 33 50 50 292 10 EGTF R12 J010AA PCEF 12-10

2.5 33 50 76 292 10 EGTF R12 J010AB PCEF 12-10

1.9 33 50 50 442 10 EGTF R12 J010BA PCEF 12-10

3.5 33 50 76 442 10 EGTF R12 J010BB PCEF 12-10

1.6 32 50 50 292 16 EGTF R12 J016AA PCEF 12-16

2.5 32 50 76 292 16 EGTF R12 J016AB PCEF 12-16

1.9 32 50 50 442 16 EGTF R12 J016BA PCEF 12-16

3.5 32 50 76 442 16 EGTF R12 J016BB PCEF 12-16

1.6 40 50 50 292 20 EGTF R12 J020AA PCEF 12-20

2.5 40 50 76 292 20 EGTF R12 J020AB PCEF 12-20

1.9 40 50 50 442 20 EGTF R12 J020BA PCEF 12-20

3.5 40 50 76 442 20 EGTF R12 J020BB PCEF 12-20

1.6 40 50 50 292 25 EGTF R12 J025AA PCEF 12-25

2.5 40 50 76 292 25 EGTF R12 J025AB PCEF 12-25

1.9 40 50 50 442 25 EGTF R12 J025BA PCEF 12-25

3.5 40 50 76 442 25 EGTF R12 J025BB PCEF 12-25

1.6 50 50 50 292 31.5 EGTF R12 J030AA PCEF 12-30

2.5 50 50 76 292 31.5 EGTF R12 J030AB PCEF 12-30

1.9 50 50 50 442 31.5 EGTF R12 J030BA PCEF 12-30

3.5 50 50 76 442 31.5 EGTF R12 J030BB PCEF 12-30

1.6 52 50 50 292 40 EGTF R12 J040AA PCEF 12-40

2.5 52 50 76 292 40 EGTF R12 J040AB PCEF 12-40

1.9 52 50 50 442 40 EGTF R12 J040BA PCEF 12-40

3.5 52 50 76 442 40 EGTF R12 J040BB PCEF 12-40

2.5 70 50 76 292 50 EGTF R12 J050AB PCEF 12-50

3.5 70 50 76 442 50 EGTF R12 J050BB PCEF 12-50

2.5 78 50 76 292 63 EGTF R12 J063AB PCEF 12-63

3.5 78 50 76 442 63 EGTF R12 J063BB PCEF 12-63

2.5 78 50 76 292 80 EGTF R12 J080AB PCEF 12-80

3.5 78 50 76 442 80 EGTF R12 J080BB PCEF 12-80

3.5 103 50 85 292 100 EGTF R12 J100AB PCEF 12-100

2.5 103 50 76 292 100 EGTF R12 J100BB PCEF 12-100

3.5 125 50 85 292 125 EGTF R12 J125AB PCEF 12-125

3.5 125 50 76 442 125 EGTF R12 J125BB PCEF 12-125

3.5 170 50 85 292 160 EGTF R12 J160AB PCEF 12-160

3.5 170 50 76 442 160 EGTF R12 J160BB PCEF 12-160

3.5 174 50 85 292 200 EGTF R12 J200AB PCEF 12-200

3.5 174 50 76 442 200 EGTF R12 J200BB PCEF 12-200

Protection & Control Group

P&C FUSES

12. Dimensions and data PCEF / 24kV

V(Kg) Wn(watt) I1(KA) d(mm) e(mm) In(a) Order code Type

1.6 91 25 50 292 6.3 EGTF R24 J006AA PCEF 24 -6

2.5 91 25 76 292 6.3 EGTF R24 J006AB PCEF 24 -6

1.9 91 50 50 442 6.3 EGTF R24 J006BA PCEF 24 -6

3.5 91 50 76 442 6.3 EGTF R24 J006BB PCEF 24 -6

1.6 62 25 50 292 10 EGTF R24 J010AA PCEF 24 -10

2.5 62 25 76 292 10 EGTF R24 J010AB PCEF 24 -10

1.9 62 50 50 442 10 EGTF R24 J010BA PCEF 24 -10

3.5 62 50 76 442 10 EGTF R24 J010BB PCEF 24 -10

1.6 72 25 50 292 16 EGTF R24 J016AA PCEF 24 -16

2.5 72 25 76 292 16 EGTF R24 J016AB PCEF 24 -16

1.9 72 50 54 442 16 EGTF R24 J016BA PCEF 24 -16

3.5 72 50 76 442 16 EGTF R24 J016BB PCEF 24 -16

1.6 76 25 54 292 20 EGTF R24 J020AA PCEF 24 -20

2.5 76 25 76 292 20 EGTF R24 J020AB PCEF 24 -20

1.9 76 50 54 442 20 EGTF R24 J020BA PCEF 24 -20

3.5 76 50 76 442 20 EGTF R24 J020BB PCEF 24 -20

1.6 79 25 54 292 25 EGTF R24 J025AA PCEF 24 -25

2.5 79 25 76 292 25 EGTF R24 J025AB PCEF 24 -25

1.9 79 50 54 442 25 EGTF R24 J025BA PCEF 24 -25

3.5 79 50 76 442 25 EGTF R24 J025BB PCEF 24 -25

1.6 89 25 54 292 31.5 EGTF R24 J030AA PCEF 24 -30

2.5 89 25 76 292 31.5 EGTF R24 J030AB PCEF 24 -30

1.9 89 50 54 442 31.5 EGTF R24 J030BA PCEF 24 -30

3.5 89 50 76 442 31.5 EGTF R24 J030BB PCEF 24 -30

1.6 106 25 54 292 40 EGTF R24 J040AA PCEF 24 -40

2.5 106 25 76 292 40 EGTF R24 J040AB PCEF 24 -40

1.9 106 50 54 442 40 EGTF R24 J040BA PCEF 24 -40

3.5 106 50 76 442 40 EGTF R24 J040BB PCEF 24 -40

2.5 130 25 76 292 50 EGTF R24 J050AB PCEF 24 -50

3.5 130 50 76 442 50 EGTF R24 J050BB PCEF 24 -50

2.5 145 25 76 292 63 EGTF R24 J063AB PCEF 24 -63

3.5 145 50 76 442 63 EGTF R24 J063BB PCEF 24 -63

2.5 145 25 76 292 80 EGTF R24 J080AB PCEF 24 -80

3.5 145 50 76 442 80 EGTF R24 J080BB PCEF 24 -80

2.5 185 25 76 292 100 EGTF R24 J100AB PCEF 24 -100

3.5 185 50 76 442 100 EGTF R24 J100BB PCEF 24 -100

3.5 195 25 76 292 100 EGTF R24 J125AB PCEF 24 -125

5.4 195 50 76 442 100 EGTF R24 J125BB PCEF 24 -125

Protection & Control Group

P&C FUSES

34 34 Φ45

I1 = maximum short-circuit current tested I3 = minimum breaking current PN = power loss at rated current R0 = resistance at room temp.

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Head Office: Factory: Cairo – Alexandria Agriculture Road, Quasna Mubarak Industrial City El-Hadidi Tower, 7th floor, El-Minufiyah, Egypt Industrial Zone 2, Tel. / Fax: +20 (48) 2580201 Land Plot no. 121, El-Menoufia, Egypt Mobile: +201001548838 E-mail: protection.control@egpandc.com

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