Origin	China
Model Number	1 piece
Brand Name	Zhongyan
Coil Number	Autotransformer
Coil Structure	Toroidal
Phase	Three
Usage	Power

Detailed Product Description

35kV and Below Oil-immersed Transformer

SZ9(M)S10(M)S11(M)-1000-31500/35 Three-phase Oil-immersed Transformer With OLTC

1 General
These products are completely accorded to the standard of the IEC 60076
2 Application Standards
2.1 IEC 60076-1-1:1993, IEC60076-2:1993
2.2 IEC 60076-3:2000
3 Model and designation

S Z _ - _ - _/_

(_)Voltage class
(_)Rated capacity
(_)Sealed Construction

(_) Performance level code (91011)

(Z) OLTC
(S) Three-phase Oil-immersed transformer

4 Performance features
4.1 A multi-layer cylinder structure is used for all high-voltage windings

to improve the impact distribution of winding
4.2 For the low voltage windings with capacities ranging from 630 KVA to 3150 KVA,

a cylinder type or spiral structure is used to ensure a high mechanical strength, even

ampere-turn distribution and excellent anti-short-circuit performance

4.3 A locating structure is added to the transformer body which can ensure that no

displacement will occur during transportation, meanwhile trunbuckles are added to

fasteners to ensure that fasteners will not be loosened during the long time operation.

With this structure, core hanging is not necessary
4.4 Core type, with cold rolled grain oriented, silicon steel laminations having excellent

magnetic properties, Insulated and clamped to minimize vibration and noise. The oil will be imputed

to the oil tank in the vacuum.

4.5 The surface painted with primer and finishing coat after being degreased, derusted and

 phosphorized, can meet the special operation requirements In metallurgic and petrochemical

 Industries as well as moist and dirty areas It is charming In appearance and compact In

design, which can reduce the floor area for Installation, the series and perfect, maintenance-free products

4 Major technical parameter
SZ9(M)S10(M)S11(M)-1000-31500/35 Three-phase Oil-immersed Transformer With OLTC
Rated capacity KVA	Rated ration and regulation range						No load	On load	Impedance Voltage(%)	No load current(%)
	HV	Tapping range			LV	Vector group	lossed	lossed
							(KW)	(KW)
1000							1.7	13		1.1
1250					0.69		2	15		1.1
1600	35		±2×2.5				2.4	18	4.5	1
2000					0.4		2.9	20	6.5	1
2500						Yd11	3.3	22		1
3150							4	26	7	0.9
4000							4.9	30.5		0.9
5000		±3×2.5			10.5 6.3		5.8	35		0.85
6300							7	39		0.85
8000	35 38.5						8.9	44	7.5	0.75
10000							10.5	51		0.75
12500							12.6	60.5		0.7
16000						YNd11	15.2	74		0.6
20000							20	87.5	8	0.5
25000							23.4	104		0.5
31500							27.5	123.1		0.45