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S13 11/0.4kv 11kv 630 kva electrical substation used transformer electrical transformers tender

1. Please be noted that our warranty is 5 years from the delivery date, and maintenance is free within warranty period;
2. Will make attractive discount according to your order's quantity.
3. Also if there is quality problem within warranty, we will send a new same spec. one for free;
4. When the order is settled down, we will track regularly the production process and feedback to you.
5. Delivery date: Within 20 Days After Receipt Of Advanced T/T Payment
6. Payment terms: 30% T/T In Advance, The Balance Paid Before Shipment
7. FOB Ningbo, China (Mainland). If by EXW, we would clear the customs freely for you.

oil power distribution three phase transformer 200kva price with 220v to 20kv

RATINGS
30,50, 80,100,125,160, 200,250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500 kVA.

HIGH VOLTAGE
This material is designed for voltages of ≤ 36 kV. Specific figures are not given for this parameter because of the wide variety of voltages used. Transformers can be supplied on demand to run at two different primary voltages, the shift between these input voltages has two basic alternatives:
• with a primary tap changer which can be switched with no load and no applied voltage
• or by changing terminals under the cover.

LOW VOLTAGE
The secondary voltage under no load is allocated at 400V, 415V, 433V, though other voltages can be supplied on demand. 
When usage requires two voltages, transformers with two simultaneous voltages can be supplied. In this case the no-load voltages are set to 400V(230V),415V(240V),433V(230V) .

VECTOR GROUP REFERENCE
The connections normally used are as follows:
• For rated power levels of 160 kVA or less: Yyn0
• For rated power levels over 160 kVA: Dyn11.

INSULATION LEVELS
As per IEC /BSEN 60076 standards these are set in accordance with the highest voltage for the material, being the level immediately above the rated voltage.