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Power transformerSpecial transformer
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General industries, electrolytic metallurgy industries, ZB and ZN series 
Model Rated capacity Rated voltage(V) Connection group  Loss (kW) No-load current  Short-circuit impedance

(kVA) HV MV LV symbol No-load On-load (%) (%)
ZHSZK-630/10 630 10000,6000 6000 11×√3
246
45
345
55.5~83.5 27class 
77~134 27class 
125~250 27class 
100~175 27class 
268~311
565
Y/Y ⊥ λ 1.4 8.3   6
ZHSZK-1000/6.3 1000 6300 Y/Y ⊥ λ        
ZHSZK-1200/6.3 1200 6000±5% Y/Y - λ        
ZHSZK-1600/10 1600 6000±5% D.YnⅡ D.do       7.5
ZHSZK-1800/35 1800 35000 Y.△/Y - λ ,Y - λ 8.2 29.8 2 7.1
ZHSZK-2000/10 2000 10000±5% Y/Y ⊥ Y,△/Y ⊥ λ 3.54 18.32   8
ZHSZK-2000/35 2000 35000 Y/Y ⊥ λ        
ZHSZK-4000/35 4000 35000 △/(Y)Y ⊥ λ, Y ⊥ λ 6.93 42.87   8
ZHSZK-4400/10 4400 10000 Y/Y ⊥ λ, Y ⊥ λ        
ZHSZK-5100/10 5100 10000 Y/Y ⊥ λ        
ZHSSP-5900/35 5900 35000 D.Yn, Y5 7.72 64.62   7
ZHSZK-6200/35 6200 35000 △/Y ⊥ λ 8.2 69.3   9.38

Transformer for yellow phosphorus furnace JB/T85606-1996

Model & capacity Rated voltage (kV) National standard
(kVA) HV LV No-load loss (kW) Load loss (kW) No-load current (%) Short-circuit impedance (%)
HLS-2000 6
6.3
10
35
180,167.5,155,142.5,130 1.8 29 3 7-8
HLS-2500 215,200,185,168,130 5.7 34 3 7-8
HLSSP-2150 230,215,200,180,130 6.8 41 3 7-8
HLSSP-4000 245,231,218,203,196,178,140 8.2/9.4 51/58 2.8 7-8
HLSSP-5000 260,245,232,220,199,182,140 9.8/11.5 59/68 2.6 6-8

Transformer for electric slag furnace JB/T8447-1996

Model & capacity Primary voltage  Secondary voltage  Voltage regulating mode Voltage regulating progression Capacity of external saturated reactor (kvar) Short-circuit impedance
(kVA) (kV) (V)     Capacity(kvar) (%)
HZ-200 6
6.3
10
35
30-60 Off-circuit tap-changing 5-7   10kV at 5-7
35kV at 6-8
HZ-630 35-70
HZ-800 40-80
HZ-1250 45-90 On-load tap-changing (adopt on-load tap changer) 19-27 1330
HZ-1600 45-90 1720
HZ-2000 50-100 2130
HZ-2500 55-110 2690
HZ-3150 60-120 3290

Transformer for electric arc furnace JB/T9640-1999

Model & capacity Primary voltage Secondary voltage Connection group Cooling mode Voltage regulating mode Loss (kW) No-load current Short-circuit impedance
(kVA) (kV) (V) symbol No-load On-load (%) (%)
HS-630 6
6.3
10
10.5
11
200 170
160 98
D-Y
do-11
ONAN Off-circuit tap-changing
2.2 11 3.0 1.05/25

9.5/23

8.5/20
HS-800 2.7 13.5 2.9
HS-1000 3.1 16 2.8
HS-1250 210 180
121 104
3.7 18.5 2.6
HS-1600 4.6 24 2.5
HS-2000 5.6 28 2.4
HS-2500 220 190
127 110
OFWF 6.7 34.5 2.3
HSSP-3150 8.0 41.5 2.2
HSSP-4000 8.25 51.5 2.1

Transformer for calcium carbide furnace JB/T6303-92

Model & capacity Primary voltage Secondary voltage Connection group  Cooling mode National standard Enterprise standard 
(kVA) (kV) (V) symbol No-load loss (kW) Load loss (kW)

No-load current (%)

Short-circuit impedance (%) No-load loss (kW)
Load loss (kW) No-load current (%)
HCS-1000 6
6.3
10
10.5
57-73 D.do-12 ONAN 3.27 21.4 3 6-8 2.62 17.0 1.5
HCS-1250 4.08 26.7 3 6-8 3.30 21.3 1.5
HCS-1600 67-83 4.40 28.8 3 6-8 3.50 23.0 1.5
HCS-1800 4.95 32.4 3 6-8 4.00 24.3 1.5
HCS-2000 72-96 5.50 36.0 3 6-8 4.40 27.0 1.3
HCS-2500 6.85 40.6 3 6-8 5.50 30.5 1.3
HCSP-3150 35 90-100 D.do-12
Y.do-11
OFWF 7.80 51.2 3 6-8 6.30 35.9 1.2
HCSP-3600 8.90 56.5 3 6-8 7.15 41.0 1.2
HCSP-4000 9.10 65.0 3 6-8 7.30 46.0 1.2

Transformer for submerged arc furnace (ferroalloy, crystal silicon, electric corundum, copper matte, pig iron, boron carbide)

Model & capacity Primary voltage Secondary voltage Connection group Cooling mode Voltage regulating mode National standard JB/T6306-92
(kVA) (kV) (V) symbol No-load loss (kW) Load loss (kW) No-load current (%) Short-circuit impedance (%)
HKS-1000 6
6.3
10
10.5
35
73 69
65 61
57
D.do-12 ONAN Off-circuit tap-changing by manual  3.27 21.4 3 6-8
HKS-1250 4.08 26.7 3 6-8
HKS-1600 4.40 28.8 3 6-8
HKS-2000 83 70
75 71 67
5.50 36.0 3 6-8
HKS-2500 6.85 40.6 3 6-8
HKSSP-3150 98 94
90 86 82
      7.80 51.2 3 6-8
HKSSP-4000 9.10 65.0 3 6-8
HKSSP-5000 113~90
126~100
10.20 71.4 3 6-8
HKSSP-6300 11.80 90.0 2.5 6-8

Order guide 
Order guide for special transformer
● We usually prepare a technical agreement according to customer’s requirements, the content covers rated capacity, primary and secondary voltage, voltage regulating mode and progression, connection group symbol, short-circuit impedance, test data and other special technical requirements.
● n the event of an objection, we keep the right to interpret. 
Note: data mentioned in this catalogue subject to change without notice for further improvements. If there is any special technical request, we’d like to settle the problem through friendly negotiation when placing an order.
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