Oil Type Power Transformer 35KV 7.5MVA 7500KVA with OLTC

Oil Type Power transformer 35KV 7.5MVA 7500KVA with OLTC for regulating the voltage in an accurate range. It can be designed from 800KVA to 31500KVA with maximum voltage 35KV and mainly used for power transmission and distribution system like power substation.

TAILI’s oil filled transformer are manufactured in accordance with domestic and international IEC standards according to Customer's market demand.

 

 

1. Quality assurance for direct supply of key materials, like core (which made directly from TAILI by high quality cold-rolled silicon steel sheet) and insulation materials (which are strictly selected by our quality control center)

2. Corrugated type tank: automatic welding, zero leakage rate, strong corrosion resistance

3. Positioning device for active-part: free core suspending, maintenance-free, safe and reliable

4. Dedicated automatic winding machine to ensure coil quality

5. Design with multiple shock absorption and noise reduction measures to ensure low operation noise

6. Special structural design and material selection to ensure strong short circuit resistance

7. On load tap changer (OLTC) with independent property rights.

 

 

►Altitude: ≤ 2000m.

►Temperature range: -5 °C to +40 °C, and the average temperature within 24 hours should not exceed +35 °C.

►The relative humidity should not exceed 50% at +40 °C, and higher relative humidity is allowed at low temperature (90% at +20 °C). And air must be clean.

â–ºWorkplaces should be free of fire, explosion, serious pollution, chemical corrosion and severe vibration.

►Gradient: ≤ 5°, vertical installation.

►Temperature range of transportation & storage: -25 °C to +55°C, and the temperature can be up to +70 °C in short time (within 24 hours).

 

 

(It can be customized according to customer’s local demand!)

Rated Power (kVA)	High Voltage (kV)	H.V. Tap range	Low Voltage (kV)	Connection symbol	Short Circuit Impendence (%)	No-load loss (W)			On-load loss (W)			No load current (%)
						S9	S10	S11	S9	S10	S11
800	35 38.5	±3x2.5%	6.3 6.6 10 10.5 11	Yd11 YNd11	6.5	1320	1190	1060	10500	9980	9980	1.05
1000						1570	1410	1260	12800	12160	12160	1
1250						1860	1670	1490	15400	14630	14630	0.9
1600						2250	2030	1800	18500	17580	17580	0.85
2000						2880	2590	2300	20250	19240	19240	0.8
2500						3400	3060	2720	21730	20640	20640	0.8
3150					7	4040	3640	3230	26010	24710	24710	0.72
4000						4840	4360	3870	30690	29160	29160	0.72
5000						5800	5220	4640	36000	34200	34200	0.68
6300					7.5	7040	6340	5630	38700	36770	36770	0.68
8000						9840	8860	7870	42750	40610	40610	0.6
10000						11600	10440	9280	50580	48050	48050	0.6
12500					8	13680	12310	10940	59850	56860	56860	0.56
16000						16460	14810	13170	74020	70320	70320	0.54
20000						19460	17510	15570	87140	82780	82780	0.54
25000						23700	21330	18960	107000	101650	101650	0.5
31500						27500	24750	22000	126000	119700	119700	0.45

 

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