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35 KV - Class Pad Mounted Transformer , Dyn11 ONAN / ONAF Oil Type Transformer

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Pearl Electric Co.,Ltd.
City: Guangzhou
Province/State: Guangdong
Country/Region: China
Tel: 86-020-2262-6605
Contact Person:
Ms Jenny Tan

35 KV - Class Pad Mounted Transformer , Dyn11 ONAN / ONAF Oil Type Transformer

Brand Name : Pearl Electric Co.,Ltd.
Model Number : PEO-S, S9~13
Certification : KEMA, CE, CCC, ISO9001
Place of Origin : China
MOQ : 1 unit
Price : USD/RMB
Payment Terms : T/T, L/C
Supply Ability : 4000 units per year
Delivery Time : 35~50days ex-work
Packaging Details : Seaworthy wooden packing
Capacity : 30kVA~10MVA or Customized
Rated H. V. : 35 kv or Customized
Rated L. V. : 0.4kv or Customized
Vector Group : Dyn11 or Customized
Impedence : 4%-6% or Customized
Cooling : ONAN/ONAF or Customized
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Clean Energy , 35 kV - Class , Pad Mounted , Oil - Immersed Transformer , Wind Power Farm

Pad-mounted Transformer Introduction

1 General Descriptions

The main purpose of this manual is for supporting transformer assembly/installation,
operation and usage by engineering personnel or technicians.
The transformer described in this manual is the completely insulated and hermetically sealed
three-phase distribution pad-mounted transformer, which is suitable for the three-phase power
distribution system of 10kV rated voltage and satisfies requirements specified in China national

Rated H.V.:35 (20.5, 22)kV, ±2×2.5%
Vector GroupDyn11/Yyn0/Yzn11
Rated L.V.:0.4kV
No-load Loss:130~3200kW
Load Loss600~20200kW
No-load Current:2.1~0.5%
Impedance Voltage:4/4.5/5.5%
Tap-changingOn-load Tap-changing
Reference StandardsIEC60076
Notes: The above specifications may be customized according to customer's requirement.

Functions and Advantages:

1. High safety protection

2. Complete functions and reliable performance

3. Flexible structure

4.Convenient maintenance

5. Low power consumption and energy saving

6. Low-noise

7. High protection level and weathering resistance

8. High mechanical strength and leakage-free

Mounting Bushings

Note: Before product delivery from the factory, the bushings are generally mounted on the

Mounting single-pass bushing: First clean the contact surface of both the bushing and seats
and smear them with lubricating silica. Rotate the bushing clockwise (for 7~7.5 cycles)
into the bushing seat and use special tool to tight it.

Mounting bi-pass bushing:

Clean with soft cloth both the internal and external surface of the bushing and bushing
seat. Then smear them with lubricating silica.

Put the connector of the bi-pass bushing into the seat and rotate it clockwise until the ratchet wheel gives out sounds like “ka, ka”, which means the ratchet wheel mechanism works, even though the bushing could be rotate in this direction unlimitedly.

Adjust the angle of the bi-pass bushing and lock it with the locking mechanism. Use multiply copper wires with cross sectionlarger than 1.5mm2 to connect the earthing hole on the bushing to the system earthing point.

HV Cable Phase Processing

(Please refer to the elbow plug instructions within the accessory box for detailed information
about the following steps.)

Step 1: Cable separating

First fix the HV cable onto the cable rack within the HV chamber. The separate the cables at a cable length larger than 800mm. Cut off the oversheath and armour strip. Strip off another 30mm oversheath downwards and leave 10mm inner sheath. Cut off other inner sheath and padding, just to preserve the

copper shielding layer and insulation shielding layer. Please see the right picture.

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