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Insulators




COMPOSITE SILICONE INSULATORS
Composite insulators were introduced with the basic idea to create high performance insulators. It consists of a combination of different materials, which perform different duties in the insulator function corresponding to their particular strength and properties, The end fittings are typically made of metal, such as forged steel or aluminum, For line insulators, a high degree of standardization has been achieved for the end fittings, which enables the easy replacement of existing conventional insulators by composite solutions.

The glass fiber reinforced resin rod which forms the core of the insulator is responsible for bearing the mechanical loads, which can be tension, bending and compression, or a combination of all three, depending on the application and load scenario.

The polymeric composite silicone lnsulators have been developed using silicone rubber, The new type of silicone rubber was examined by the accelerated weathering tests and applied to the shed material of the polymeric surge Arrestor, The tests confirmed that the silicone rubber had an excellent weather resistance and high water repellency during the long term weathering tests.

Shree Bajali packers offer a wide range of composite line insulators in silicone Rubber with host of end fitting to exact requirements of customers from 11-x33kvas per IEC61109-2

PRODUCTS DETAILS LINE INSULATORS



TECHNICAL PARTICULARS OD 11KV-33KV COMPOSITE LINE INSULATOR


S.NO

TECHNICAL DETAILS

11-15 KV                          33-36 KV

1.

Type

Distribution                    Distribution

2.

Materials of Housing

Silicon Rubber               Silicon Rubber

3.

Rated Voltage (KV)

12                                     33

4.

Sectional Length (mm)

335_+15                         525_+15

5.

Minimum Creepage Distance(mm)

360mm(Approx.)         942mm (Approx.)

6.

Min. Dry Arcing Distance (mm)

178 (Approx.)             397mm (Approx.)

7.

Number of sheds Nos.

3                                           8

8.

Shed Diameter (mm)

100mm                           100mm

9.

Power frequency flashover voltage
Dry (KV)
Wet (KV)

 

80 KV (rms)                    106  KV (rms)
55 KV (rms)                     87  KV (rms)

10.

Lighting Impulse flashover voltage
Postive (kVp)
Negative (kVp)

 

139 kVp                            241  kVp

11.

Radio Infuence Voltage at 1MHz
Test kV
Max. kV

 

10kV Less then 50kV          10kV Less then 50kV

12.

Specified Mechanical load (KN)

45                                              70

13.

Routine load test (KN)

50 % of SML                     50 % of SML

14.

Applicable standard

IEC-61109-2008                IEC-61109-2008



PRODUCT DETAILS PIN INSULATORS

TECHNICAL PARTICULARS OF 11KV-36KV COMPOSITE LINE INSULATOR

S.NO

TECHNICAL DETAIL

11-55 KV

33-36 KV

1.

Type

PIN Type

PIN Type

2.

Material of Housing

Silicon Rubber

Silicon Rubber

3.

Rated Voltage (KV)

12

36

4.

Section Length (mm)

Length-150mm Dia-180mm

Length-150mm Dia-33.5mm

5.

Minimum Creepage Distance (mm)

360mm (Approx.)

1125mm  (Approx.)

6.

Min. Dry Arcing Distance (mm)

180mm (Approx.)

380mm (Approx.)

7.

Numbers of sheds Nos.
Big
Small

 

3

 

5
4

8.

Shed Diameter (mm)
Big
Small

 

100 mm

 

150 mm
125 mm

9.

Power frequency withstand voltage
Dry (kV)
Wet (kV)

 

80kV(rms)
60kV(rms)

 

90kV(rms)
125kV(rms)

10.

Lighting impulse withstand voltage
Positive (kVP)
Negative (kVP)

 

125 kVp
135 kVp

 

140 kVp
170 kVp

11.

Radio Infulance Voltage at 1MHz
Test kV
Max. kV

 

10 kV Less than
50 uV

 

30 kV Less than
100uV

12.

Specified Bending load (KN)

5 KN

10 KN

13.

Applicable standard

IEC-61109-2008

IEC-61109-2008

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