3 Phase Oil Type Earthing 66kv Power Transformer
Basic Info.
Model NO.:s11
Cooling Method:Oil-immersed Type Transformer
Winding Type:Two-winding Transformer
Certification:ISO9001, Ctqc
Usage:Power Transformer
Frequency Characteristics:Power Frequency
Shape of Core:Ring
Item:3 Phase Oil Type Earthing 66kv Power Transformer
Primary Voltage:66kv
Secondary Voltage:0.4kv
Rating Capacity:350kVA
Transformer:66kv Power Transformer
Iron Core:Wounded Core
Coil Structure:Isolation
Material:CRGO,Copper,Minral Oil
Tank Design:Sealed
Loss:Low Losses
Transport Package:Wooden Case
Specification:CTOC type tested
Origin:Zhejiang China
HS Code:85042100
Production Capacity:5000MAV/Year
Product Description
Product overview
++++General
We offers a complete range of distribution transformers designed to grant the reliability, durability, and efficiency required in utility, industrial, and commercial applications. Liquid-filled transformers are manufactured in accordance with the most demanding industry and international standards. Compliance with important standards, from IEC to VDE, is a matter of course, just as much as the exclusive use of high-quality materials. Qualified employees implement the demanding standards in daily practice.
++++Standard Features
1,Product Range:15kVA-10000kVA, up to 44kV
2, System voltage: max. 36 kVA 200 BIL
3,Coolers: corrugated wall or radiator
4,Oil preservation: hermetically sealed or conservator/free breathing
5, Tap changer: off-circuit or on-load
6, Cooling medium: mineral oil, Midel
7, Steel type core clamping system
8, High voltage (HV) multilayer winding
9, Low voltage (LV) foil winding or layer winding
10, Winding materials aluminium or copper
11,High temperature class transformers
12,Low noise solution
13,Efficient transformers with reduced losses
14, Liquid-filled
15,Used in special conditions
16,Sophisticated facilities
17, Usage of wooden case
18, 3D package for drawings
19, Special test like Zero Sequence Impendence test
20, Cooling: ONAN, ONAN/ONAF, KFAF, KFW
++++Service condition
a) Suitable for indoor or outdoor application
b)Air temperature: Maximum temperature: +40ºC; Minimum temperature:-30ºC
c) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
d) Altitude above sea level: Maximum installation altitude: 2000m.
e)Max wind speed:35M/s
f) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
g) No frequent violent shake
Note: * Beyond those services condition should enquiry to manufacturer technical dept during order
++++ Tests
1, Voltage ratio. Polarity and phase relationship test on each tapping
2, Resistance of all windings
3, No-load current and no-load losses measurement
4, Load losses measurement at rated current and frequency
5, Impedance voltage measurement
6, Induced over-voltage and separate source voltage withstand tests
7, Impulse voltage withstand test.
8, Noise level test
9, Oil leakage test
10, Overload test at 150% rated current for one hour after temperature rise test and hot resistance measurement of (HV - LV)
| Rated Power | Load losses | No-load losses | No load current% | Impedance% |
| S11-30 | 630 | 100 | 2.1 | 4 |
| S11-50 | 910 | 130 | 2 | 4 |
| S11-63 | 1090 | 150 | 1.9 | 4 |
| S11-80 | 1310 | 180 | 1.8 | 4 |
| S11-100 | 1580 | 200 | 1.6 | 4 |
| S11-125 | 1890 | 240 | 1.5 | 4 |
| S11-160 | 2310 | 270 | 1.4 | 4 |
| S11-200 | 2730 | 330 | 1.3 | 4 |
| S11-250 | 3200 | 400 | 1.2 | 4 |
| S11-315 | 3830 | 480 | 1.1 | 4 |
| S11-400 | 4520 | 570 | 1 | 4 |
| S11-500 | 5410 | 680 | 1 | 4 |
| S11-630 | 6200 | 810 | 0.9 | 4.5 |
| S11-800 | 7500 | 980 | 0.8 | 4.5 |
| S11-1000 | 10300 | 1150 | 0.7 | 4.5 |
| S11-1250 | 12000 | 1360 | 0.6 | 4.5 |
| S11-1600 | 14500 | 1640 | 0.6 | 4.5 |
wounded core
Whether in design, manufacturing methods or materials the cores of transformers represent the latest state of technology. The silicon alloyed electric sheet steel used is grain-oriented, cold-rolled and insulated on both sides, guaranteeing low losses and noise and these values are even improved by laser treatment. Numerically controlled cutting machines provide for careful treatment in the cutting process in order to avoid mechanical tension in the core and thus unwanted properties right from the beginning. Standard use of step-lap cutting additionally minimizes losses and noise.
