Understanding Standoff Insulator Sizes

Image of three different sized Standoff Insulators, to illustrate A Guide to Standoff Insulator Sizes

What are standoff insulators?

Standoff insulators are insulating materials that help to maintain a safe distance between a conductive surface and a live conductor. By maintaining this distance between two surfaces, standoff insulators prevent electricity from jumping from one surface to the other.

Available in a range of heights, insert sizes and widths, the standoff insulators manufactured by Termate are built in a uniform black octagonal design for a consistent application across all product assemblies. 

Constructed from flame-resistant glass-reinforced polyamide injection moulded plastic, standoff insulators also provide mechanical support in a broad selection of applications.

Standoff insulator width

What are the standard widths of standoff insulators?

Standoff insulators come in a range of standard widths and are suitable for up to 1000 volts AC or 1500 volts DC. The three standard widths available from Termate for standoff insulators are 25mm, 35mm, and 60mm.

What impact does width have on the performance of a standoff insulator?

While the width of a standoff insulator has little impact on performance, it can affect its correct application depending on the size of the conductor required. Likewise, a consistent shape to a standoff insulator ensures that consistency is maintained throughout the application.

Termate’s standoff insulators are engineered with an octagonal shape, which allows for easy installation, as well as keeping a consistent aesthetic throughout the application, regardless of the height and width of the standoff insulator.

When should I use a wide standoff insulator?

A wider standoff insulator brings greater mechanical strength. This enhanced structural strength helps to maintain the overall integrity of the busbar system in the event of a short circuit or other electrical faults.

Standoff insulators are used in everything from switchgear and Power Distributor units (PDUs) through connection boxes to inverters and transformers. A broad range of industries employ standoff insulators in the construction of their products, including datacentre critical power, renewable energy, and fully electric vehicles.

Standoff insulator height

What are the standard heights of standoff insulators?

To complement the standard range of standoff insulator widths available, Termate offers an extensive selection of heights, in addition to having the manufacturing facilities to offer development opportunities to customers.

What impact does height have on the performance of a standoff insulator?

When building applications, engineers want to avoid spending any time, money, and effort bending and reshaping copper bar. In order to remove the need for this process, Termate’s standoff insulators are engineered to cater for a range of height requirements to suit most applications.

Termate delivers tall and thin standoff insulators

As technology continues to develop, the application of electricity continues to expand. Electric vehicles, battery energy storage systems (BESS), homes and other applications have led to increasing demand for tall and thin standoff insulators. This is further driven by the need to keep units as small and compact as possible, maintaining the narrow width while maximising the potential height.

Termate’s tall and thin standoff insulators bring the best of both worlds, delivering thin insulators with the necessary height to function without compromising the overall integrity of the application.

To learn more about Termate’s standoff insulators, contact our technical sales team.

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