Welcome to WINWIN Speciality Insulators Ltd. (WS)

At WINWIN Speciality Insulators Ltd. (WSI), we take immense pride in being one of the foremost manufacturers of Solidcore post insulators in India. With a commitment to excellence, innovation, and the highest industry standards, we have established ourselves as a trusted name in the electrical insulation industry.

At WSI, we are not just keeping pace with industry requirements; we are setting new standards.

Height and Diameter Flexibility for Your Unique Needs:

At WSI, we understand that each project in the electrical industry has its own set of demands. That’s why we are dedicated to offering flexible solutions when it comes to our solid-core insulators.

Height Versatility:

Our commitment to adaptability is exemplified by the wide height range of our single-part insulators. Height starting from a modest 190 mm, our single-part insulators can reach towering heights of up to 1900mm. For insulators greater than 1900mm, we provide multiple-part configurations, ensuring that our products seamlessly integrate with the unique specifications of your projects, providing you with the versatility you need.

Diameter Strength:

In addition to height flexibility, our solid-core insulators boast core diameters of up to 210mm. This robust design allows our solutions to confidently handle substantial mechanical loads, ensuring the reliability and durability of your electrical systems.

Creepage Distance Expertise:

We recognize the critical role of creepage distance in insulator performance. WS insulators are meticulously designed to provide creepage distances of up to 35mm per kV, assuring optimal electrical insulation even in the most challenging environmental conditions. For specialized applications, our team can customize creepage distances to precisely match your project requirements.

Innovating for Tomorrow:

At WS, innovation is at the core of our mission. We are currently in the development phase of a Single-part Solidcore Post Insulator with an impressive height of 2300mm. This innovation is aimed at meeting the specific requirements of 220 kV solid-core insulators without the need for stacking, further enhancing the efficiency and performance of your projects.

Stringent Quality Assurance:

Quality is our top priority. Each and every insulator produced at WS factory undergoes thorough inspection, adhering to both national IS (India standard) / IEC (International standard). We also strictly follow the customer specification. This commitment to quality control guarantees that our products meet the highest industry benchmarks, ensuring safety and reliability in every application.

WS Product Range:

• 
  SOLIDCORE C4-325 TO C10-325
• SOLIDCORE C6-450 TO C6-550
• SOLIDCORE C4-650 TO C4-750

IEC Designation	Units	C4-325	C6-325	C8-325	C10-325
Cantilever Strength (upright)	kN	4	6	8	10
Rated Voltage	kV	66	66	66	66
Total Height	mm	770	770	770	770
Max. Diameter of Insulating Part	mm	191	201	222	245
Top Metal Part Diameter	mm	160	160	160	160
Bottom Metal Part Diameter	mm	160	160	160	175
Top Pitch Circle Dia.	mm	127	127	127	127
Number of Holes and Hole dia.	mm	4 x M16	4-M16	4 x M16	4 x M16
Bottom Pitch Circle Dia.	mm	127	127	127	127
Number of Holes and Hole dia.	mm	4 x M16	4-M16	4 x M16	4 x M16
Total Creepage Distance	mm	1850	1850	1850	1850
Dry Power Frequency Withstand Voltage	kV	170	170	170	170
Wet Power Frequency Withstand Voltage	kV	140	140	140	140
Impulse Withstand Voltage Positive	kVp	325	325	325	325
Impulse Withstand Voltage Negative	kVp	325	325	325	325
Dry Power Frequency Flashover Voltage	kV	200	200	200	200
Wet Power Frequency Flashover Voltage	kV	170	170	170	170
Impulse Flashover Voltage Positive	kVp	350	350	350	350
Impulse Flashover Voltage Negative	kVp	375	375	375	375
RIV Test Voltage	kV	46	46	46	46
Maximum RIV	?V	200	200	200	200
Visible Discharge Voltage	kV	53	53	53	53
Tensile Strength	kg	5000	6000	6000	6000
Torsion Strength	kgM	200	250	300	400
Compression Strength	kg	10000	12000	12000	12000
Weight (approximate)	kg	32	33	39.5	41.5

Generated by wpDataTables

IEC Designation	–	C6-450	C4-550	C6-550
Cantilever Strength (upright)	kN	6	4	6
Rated Voltage	kV	66	110	110
Total Height	mm	1020	1220	1220
Max. Diameter of Insulating Part	mm	187	220	242
Top Metal Part Diameter	mm	160	160	160
Bottom Metal Part Diameter	mm	160	220	240
Top Pitch Circle Dia.	mm	127	127	127
Number of Holes and Hole dia.	mm	4 x M16	4 x M16	4 x M16
Bottom Pitch Circle Dia.	mm	127	178	200
Number of Holes and Hole dia.	mm	4 x M16	4 x 18	4 x 18
Total Creepage Distance	mm	2000	3400	3400
Dry Power Frequency Withstand Voltage	kV	200	250	250
Wet Power Frequency Withstand Voltage	kV	185	230	230
Impulse Withstand Voltage Positive	kVp	450	550	550
Impulse Withstand Voltage Negative	kVp	450	550	550
Dry Power Frequency Flashover Voltage	kV	220	280	280
Wet Power Frequency Flashover Voltage	kV	200	250	250
Impulse Flashover Voltage Positive	kVp	475	570	570
Impulse Flashover Voltage Negative	kVp	500	590	590
RIV Test Voltage	kV	53	78	78
Maximum RIV	?V	200	200	200
Visible Discharge Voltage	kV	53	88	88
Tensile Strength	kg	6000	6000	7000
Torsion Strength	kgM	350	300	400
Compression Strength	kg	12000	12000	14000
Weight (approximate)	kg	47	56.5	67

Generated by wpDataTables

IEC Designation	Units	C4-650	C6-650	C4-750
Cantilever Strength (upright)	kN	4	6	4
Rated Voltage	kV	132	132	154
Total Height	mm	1500	1500	1700
Max. Diameter of Insulating Part	mm	223	234	229
Top Metal Part Diameter	mm	160	160	160
Bottom Metal Part Diameter	mm	240	240	240
Top Pitch Circle Dia.	mm	127	127	127
Number of Holes and Hole dia.	mm	4 x M16	4 x M16	4 x M16
Bottom Pitch Circle Dia.	mm	200	200	200
Number of Holes and Hole dia.	mm	4 x 18	4 x 18	4 x 18
Total Creepage Distance	mm	3625	3625	4500
Dry Power Frequency Withstand Voltage	kV	340	340	390
Wet Power Frequency Withstand Voltage	kV	275	275	325
Impulse Withstand Voltage Positive	kVp	650	650	750
Impulse Withstand Voltage Negative	kVp	650	650	750
Dry Power Frequency Flashover Voltage	kV	360	360	410
Wet Power Frequency Flashover Voltage	kV	340	340	375
Impulse Flashover Voltage Positive	kVp	700	700	800
Impulse Flashover Voltage Negative	kVp	725	725	825
RIV Test Voltage	kV	92	92	108
Maximum RIV	?V	200	200	500
Visible Discharge Voltage	kV	92	92	108
Tensile Strength	kg	6000	7000	6000
Torsion Strength	kgM	300	300	300
Compression Strength	kg	12000	14000	12000
Weight (approximate)	kg	64.5	73	75.5

Generated by wpDataTables

• 
  SOLIDCORE C6-750 TO C12.5-750
• SOLIDCORE C6-750 TO C12.5-750
• SOLIDCORE – C8-1550

wpDataTable with provided ID not found!

IEC Designation	–	C4-1050	C6-1050	C8-1050	C8-1175
Cantilever Strength (upright)	kN	4	6	8	8
Rated Voltage	kV	220	220	220	220
Total Height	mm	2300	2300	2300	2650
Max. Diameter of Insulating Part	mm	244	261	272	285
Top Metal Part Diameter	mm	160	160	160	160
Bottom Metal Part Diameter	mm	240	265	295	295
Top Pitch Circle Dia.	mm	127	127	127	127
Number of Holes and Hole dia.	mm	4 x M16	4 x M16	4 x M16	4 x M16
Bottom Pitch Circle Dia.	mm	200	225	254	254
Number of Holes and Hole dia.	mm	4 x 18	4 x 18	8 x 18	8 x 18
Total Creepage Distance	mm	6125	6125	6125	7600
Dry Power Frequency Withstand Voltage	kV	490	490	490	560
Wet Power Frequency Withstand Voltage	kV	460	460	460	460
Impulse Withstand Voltage Positive	kVp	1050	1050	1050	1175
Impulse Withstand Voltage Negative	kVp	1050	1050	1050	1175
Dry Power Frequency Flashover Voltage	kV	510	510	510	590
Wet Power Frequency Flashover Voltage	kV	490	490	490	560
Impulse Flashover Voltage Positive	kVp	1100	1100	1100	1250
Impulse Flashover Voltage Negative	kVp	1150	1150	1150	1300
Wet Switching Surge Withstand Voltage	kV	750	750	750	850
RIV Test Voltage	kV	156	156	156	156
Maximum RIV	?V	500	500	500	500
Visible Discharge Voltage	kV	156	156	156	156
Tensile Strength	kg	6000	7000	8000	8000
Torsion Strength	kgM	300	300	400	400
Compression Strength	kg	12000	14000	16000	16000
Weight (approximate)	kg	123	144	168	196.5

Generated by wpDataTables

Designation		WS-DISC-45TC	WS-DISC-45BC	WS-DISC-80TC	WS-DISC-80BC	WS-DISC-90BC
Electro-Mechanical Strength	kN	45	45	80	80	90
Rated voltage	kV	11	11	11	11	11
Nominal Diameter (D)	mm	255	255	255	255	255
Nominal Spacing (S)	mm	145	145	145	145	145
Total Creepage Distance	mm	280	280	320	320	320
Coupling Type	–	T & C	B & S	T & C	B & S	B & S
Coupling Size	mm	NA	16 B	NA	16 A	16 A
Locking Device	–	NA	“W”	NA	” R”	“R”
Dry Power Frequency Withstand	kV	70	70	70	70	70
Wet power Frequency Withstand	kV	40	40	40	40	40
Dry Power Frequency Flashover	kV	75	75	75	75	75
Wet power Frequency Flashover	kV	45	45	45	45	45
Impulse Withstand Positive	kVp	110	110	110	110	110
Impulse Withstand Negative	kVp	110	110	110	110	110
Impulse Flashover Positive	kVp	115	115	115	115	115
Impulse Flashover Negative	kVp	120	120	120	120	120
Puncture Voltage	kV	100	100	110	110	120
RIV Test Voltage	kV	10	10	10	10	10
RIV	?V	50	50	50	50	50
Corona Extinction Voltage	kV	9	9	9	9	9
Net Weight (approximate)	kg	4	4.1	5.1	5.2	5.2

Generated by wpDataTables

Key Features:

Unmatched Material Quality:

WS post insulators are crafted using high-strength alumina porcelain, ensuring the utmost durability and reliability. This choice of material underlines our dedication to delivering products that not only meet but exceed expectations, making them ideal for the most demanding electrical applications.

Versatile Range for Varied Applications:

WS extensive product portfolio caters to a wide spectrum of applications, including power plants, substations, and distribution networks for supporting bus bars and conductors, isolator applications, switchgear products, pantograph applications, and capacitor bank support etc., WS post insulators are engineered to excel in diverse scenarios.

Meeting Diverse Electrical Industry Needs:

At WS, we recognize the ever-evolving demands of the electrical industry. To cater to a wide spectrum of requirements, our product range spans from 12 kV to 800 kV, ensuring that our solutions are tailored to meet both standard applications and specialized projects.

Expanding the Limits:

In our pursuit of excellence, we are currently in the developmental stages of cutting-edge 1200 kV Solidcore Post Insulators. This underscores our commitment to innovation and our dedication to providing high-quality, reliable products that push the boundaries of electrical infrastructure capabilities.

Contact us today

WS commitment to customer satisfaction is unwavering. We have a dedicated team ready to provide comprehensive support to our customers, from project initiation to post-installation services.
Contact us today to discuss how WS Solidcore Post Insulators can meet your specific needs and elevate the performance of your electrical infrastructure.

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