33-38kV S11 SZ11 Oil-Immersed Distribution Transformer

35 kv oil-immersed power transformer is advanced in designing, make great improvement on the material and structure .High and low voltage clamp with steel belt or and side beam taut, form a strong frame structure, strengthen the core clampin…

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Product Description

Product overview
35 kv Oil-Immersed Power Transformer is advanced in designing, make great improvement on the material and structure .High and low voltage clamp with steel belt or and side beam taut, form a strong frame structure, strengthen the core clamping force and tolerance transportation capacity. Anti-short circuit ability is strong, beautiful appearance, reliable operation, low loss, low noise, reach the advanced level of the same products abroad. The SZ11-8000/35 one-time through the national transformer prototype testing center for sudden short circuit test, high and low voltage coil set longitudinal oil way is good for heat dissipation, can greatly reduce the copper oil temperature difference and the hot spot temperature rise within the coil.

Execution standard:
GB 1094.1 2 general electric power transformer, power transformer temperature rise,
GB 1094.3 "level of power transformer insulation and insulation test"
GB 1094.5 the ability to withstand short-circuit power transformer
GB/T 6451 "three-phase oil-immersed power transformer technical parameters and requirements"
GB/T 15164 "guidelines for the oil-immersed power transformer load
IEC76 "power transformer"
GB 2536 "transformer oil"

800 kva ~ 31500 kva three-phase double-winding and excitation surge of power transformer:

Type	Rated capacity （KVA）	Connection symbol	Voltage combination （KV）			No-load losses （W）	Load losses （W）	No- load current （%）	Short-circuit impedance （%）
Type	Rated capacity （KVA）	Connection symbol	H.V	Tapping range	L.V	No-load losses （W）	Load losses （W）	No- load current （%）	Short-circuit impedance （%）
S11-630	630	Yd11	35	±5%	3.15 6.3 10.5	190	710	2.4	4.0
S11-800	800					270	1000	2.4
S11-1000	1000					370	1380	1.8
S11-1250	1250					400	1570	1.8
S11-1600	1600					470	1850	1.6
S11-2000	2000					550	2130	1.6
S11-2500	2500					630	2530	1.4
S11-3150	3150		33~38.5	±5%	3.15 6.3 10.5	720	2760	1.4
S11-4000	4000					880	3470	1.2
S11-5000	5000					980	3990	1.2
S11-6300	6300					1160	4880	1.2
S11-8000	8000	YNd11	33~38.5	±5% ±2*2.5%	3.15 3.3 6.3 6.6 10.5 11	1350	5880	1.0
S11-10000	10000					1300	5960	1.0	6.0
S11-12500	12500					1520	6960	1.0
S11-16000	16000					1770	1830	1.0
S11-20000	20000					2090	9690	1.0
S11-25000	25000					2450	11730	1.0
S11-31500	31500					3050	14450	0.8

Note 1: transformer with 6300KVA or less rated capacity can provide products whose high-voltage tapping range is ±2×2.5%.

Note 2: 10.5KV and 11KV transformer lower than low voltage can provide products with connection symbol of Dyn11.

Note 3: transformer with 3150KVA or more rated capacity has the greatest tapping current on -5% tapping position.

2000 kva ~ 200000 kva three-phase load power transformer with double winding

Type	Rated capacity （KVA）	Connection symbol	Voltage combination （KV）			No-load losses （W）	Load losses （W）	No- load current （%）	Short-circuit impedance （%）
Type	Rated capacity （KVA）	Connection symbol	H.V	Tapping range	L.V	No-load losses （W）	Load losses （W）	No- load current （%）	Short-circuit impedance （%）
SZ11-2000	630	Yd11	35	±3*2.5%	6.3 10.5	190	710	2.4	4.0
SZ11-2500	800					270	1000	2.4
SZ11-3150	1000					370	1380	1.8
SZ11-4000	1250		33~38.5	±3*2.5%	6.3 10.5	400	1570	1.8
SZ11-5000	1600					470	1850	1.6
SZ11-6300	2000					550	2130	1.6
SZ11-8000	8000	YNd11	33~38.5	±3*2.5%	6.3 6.6 10.5 11	1350	5880	1.0
SZ11-10000	10000					1300	5960	1.0	6.0
SZ11-12500	12500					1520	6960	1.0
SZ11-16000	16000					1770	1830	1.0
SZ11-20000	20000					2090	9690	1.0