Polymer Suspension Insulators

Description:

NGK-LOCKE produces Suspension Transmission Insulators electrically rated from 69kV to 769kV, and mechanically rated from 25 KIP to 100 KIP. Multiple shed profiles are available to provide ideal leakage performance under various environmental and contamination conditions.

A broad range of ANSI and IEC hardware configurations are available. A range of corona rings is available to combat damaging electrical field stress.

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Catalog No.	Typical System Voltage kv	Section Length, in.	Leakage Distance, in.	Low Freq. Flashover Voltage - Dry, kV	Low Freq. Flashover Voltage - Wet, kV	Critical Impulse Flashover Voltage - Pos., kV	Critical Impulse Flashover Voltage - Neg., kV	No. of Sheds	Dry Arcing Distance, in.	Specified Mechanical Load, lbs.	Specified Mechanical Load, kN	Tower Side End Fitting	Line Side End Fitting	Approx. Weight, lbs.
251-SC210-YE Product successfully added to the Quote List	69	37.4	58.7	305	270	450	480	21	26.5	70	69	71	68	7.5
251-SC220-YE Product successfully added to the Quote List	69	38.6	61.5	315	280	470	500	22	27.7	70	69	71	68	7.6
251-SC230-YE Product successfully added to the Quote List	69	39.8	64.3	330	290	490	520	23	28.9	70	69	71	68	7.8
251-SC240-YE Product successfully added to the Quote List	69	40.9	67.1	340	300	505	540	24	30.1	70	69	71	68	7.9
251-SC250-YE Product successfully added to the Quote List	69	42.1	69.9	350	310	525	560	25	31.2	70	69	71	68	8
251-SC260-YE Product successfully added to the Quote List	69	43.3	72.7	360	320	545	575	26	32.4	70	69	71	68	8.2
251-SC270-YE Product successfully added to the Quote List	69	44.5	75.5	370	330	560	595	27	33.6	70	69	71	68	8.3
251-SC280-YE Product successfully added to the Quote List	69	45.7	78.3	385	340	580	615	28	34.8	70	69	71	68	8.5
251-SC290-YE Product successfully added to the Quote List	69	46.8	81.1	395	350	600	635	29	36	70	69	71	68	8.6
251-SC300-YE Product successfully added to the Quote List	69	48	83.9	405	355	615	655	30	37.2	70	69	71	68	8.8

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Polymer Suspension Fittings

Ball Fitting

Our suspension insulator fittings are designed to support and secure conductors while allowing controlled movement under load. Each fitting is built for strength, proper alignment, and consistent performance in demanding line conditions.

With multiple sizes and configurations available, these fittings are engineered to match specific suspension applications while maintaining efficient installation and long-term reliability in the field.

Clevis Fitting

Eye Fitting

Socket Fitting

Tongue Fitting

NGK-Locke Production

Engineering Global Grid Reliability Through Excellence

NGK-Locke Production merges advanced Japanese technology with American manufacturing heritage to deliver world-class high-voltage insulators. We specialize in precision-engineered porcelain and polymer solutions, ensuring the safety, durability, and superior performance of global power transmission infrastructure.

The NGK-Locke mission

Our core mission at NGK-Locke is to enrich human life by adding new value to society through the manufacturing of superior high-voltage insulators. We are dedicated to supporting a stable global power infrastructure while maintaining a deep commitment to environmental stewardship and sustainable corporate growth excellence.

The NGK-Locke Vision

We envision a future defined by clean energy where our innovative polymer technologies lead the transition toward carbon neutrality. By consistently exceeding customer expectations and maintaining rigorous safety standards, we strive to be the world’s most trusted partner for high-quality, sustainable electrical transmission components and solutions.

Environmental Sustainability

Based on the NGK Group Philosophy of Enriching Human Life by Adding New Value to Society, we aim to provide new value through our unique ceramic technologies to contribute to the realization of a sustainable society and earn the trust of society by meeting its expectations toward us.

How Can We Help You?

Tell us about your needs or challenges, and our team will guide you toward the right solution with clear, responsive support at every step.

U.S NGK-Locke Office Location

Virginia Beach Headquarters

Main Office

Virginia Beach Headquarters

1609 Diamond Springs Road Virginia Beach, VA 23455

Phone: (757) 460-3649

Fax: (757) 460-3649

Email Link: marketing@ngk-locke.com