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Furnace Transformers

Summary 
Furnace transformers are separated with normal power transformer with its characteristic of massive secondary currents which are the main products of Shenda Electric with many advantages both on quality and price. As an example a 30MVA unit at 150V would result in a secondary current of 115 kilo ampere. For these high secondary currents special bushings are required to be connected to the bus-bars. These bushings are specified with very specific arrangements to suit the bus-bar arrangement and cooling system. Furnace bus-bar are mostly water-cooled. The cooler are either of the oil forced (OFAF) or Oil forced water OFWF).

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Furnace transformers

Summary

Furnace transformers are separated with normal power transformer with its characteristic of massive secondary currents which are the main products of Shenda Electric with many advantages both on quality and price. As an example a 30MVA unit at 150V would result in a secondary current of 115 kilo ampere. For these high secondary currents special bushings are required to be connected to the bus-bars. These bushings are specified with very specific arrangements to suit the bus-bar arrangement and cooling system. Furnace bus-bar are mostly water-cooled. The cooler are either of the oil forced (OFAF) or Oil forced water OFWF).

Reliable Structure

Low loss Low noise Strong mechanical strength and short-circuit withstand ability
Low partial discharge,Operation reliability,Easy maintenance
Pretty outline and compact structure
100% guaranteed no leakage


Application

Arc furnaces are used in steel industry for smelting scrap iron and for refining steel.? Other application areas are :
Smelting glass and ceramics Manufacturing or refining many other materials etc. ferrochromium, ferromanganese, different abrasive materials (oxides and nitrides), semiconducting base materials, nanopowders etc.
Electric arc furnace (EAF) transformers are required for many different furnace processes and applications . they are built for :
a , Steel furnaces, mainly long arc
b, Landle furnaces
c, ferro-alloy furnace and similar with short or submerged are
d,Smelting of other materials

Type Rated power Connection Primary voltage Secondary Voltage Regulation voltage step
(kVA) symbol (kV) (v)
HSSPZ-1500/35 1500 Yd11 35 290~157 10
HSSP-3200/35 3200 D-Y,d0-11 35 240~138 4
HSSPK-3200/35 3200 D-Y,d0-11 35 240~138 5
HJSSP-5000/35 5000 Yd11 35 212~155 5
HJSSP-5500/35 5500 Yd11 35 240~130 6
HJSSP-7000/35 7000 Yd11 35 240~140 8
HJSSPZ-9000/35 9000 Yd11 35 239~163 9
HSSP-9000/35 9000 Yd11 35 320~180 8
HJSSPZ-10000/35 10000 Yd11 35 260~188 9
HSSPZ-10000/35 10000 Yd11 35 300~160 13
HSSPZ-12500/35 12500 Yd11 35 250~150 9
HSSP-12500/35 12500 Yd11 35 340~195 11
HSSP-15000/35 15000 D-Y,d0-11 35 353~160 8
HSSPZ-16000/35 16000 Yd11 35 375~200 15
HJSSPZ-16000/35 16000 Yd11 35 310~190 13
HSSPZ-20000/35 20000 Yd11 35 400~270 13
HJSSPZ-20000/35 20000 Dd0 35 320~170 11
HSSPZ-25000/35 25000 Yd11 35 509~302 13


Type of taping short-circuit impedance(%) No-load loss On-load loss
On-load 5.5 2.6 23
No-load 7 5.3 41.1
No-load 18.65 5.3 91.1
No-load 7.5 9.3 55
No-load 7 9.1 52.5
No-load 6.5 9.4 77
On-load 8.5 11.6 97
No-load 6 11 116
On-load 8.5 17.2 187
On-load 6.5 12 97
On-load 9 19.7 134
No-load 8 13.9 154
No-load 8 20 107
On-load 7 16.4 16.1
On-load 7 19.2 195.6
On-load 7 20.7 207.7
On-load 6.5 30.4 30.4
On-load 7.5 28.5 28.5

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