Product Series: CHRB / CHSB

Heat Shrink Right Angle & Straight Insulating Boots

Up to 36kV
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Product Overview

COMPAQ CHRB/CHSB Series provides a reliable solution for insulating and sealing cable connections in air-insulated medium voltage switchgear and transformer cable end boxes up to 36kV. These heat shrinkable boots are moulded components that cover the interface between the cable lug and the equipment bushing, offering secure phase-to-phase and phase-to-ground insulation where air clearances are limited.

Designed for flexibility in installation, the boots are available in Right Angle (CHRB) and Straight (CHSB) versions to suit different layouts. Their cross-linked, non-tracking polyolefin construction combined with an internal hot melt adhesive coating delivers strong dielectric performance, erosion resistance, and a moisture-tight seal. By preventing flashovers caused by humidity, rodents, or contaminated environments, they help maintain network safety and equipment reliability. Fully compatible with COMPAQ heat shrink terminations, the CHRB/CHSB Series ensures quick installation, extended service life, and consistent performance in both indoor and outdoor conditions.

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Product Benefits?

Compatibility

Designed to work seamlessly with all COMPAQ heat shrink terminations, extending system reliability and service life.

01

Protection Against Flashover

Cross-linked, thermally stabilised polyolefin delivers superior mechanical and electrical performance.

02

Moisture Tight Sealing

Internal hot-melt adhesive coating creates a durable seal, preventing moisture ingress and ensuring consistent performance.

03

Weather & UV Resistance

Suitable for indoor and outdoor service in polluted and harsh environments.

04

Quick Installation

Shrinks evenly using a gas torch or hot air blower, reducing downtime.

05

Strong Dielectric Performance

Manufactured from non-tracking, cross-linked polyolefin to withstand electrical stress and ensure long term reliability.

06
Specifications

Technical Specifications

Parameter Specification
Material Cross-linked Polyolefin, non-tracking, UV-stabilized
Shelf Life Unlimited under normal storage conditions
Compatibility Suitable for COMPAQ Heat Shrink Terminations (CHIT/CHOT series)
Shrink Ratio Typically 3:1
Voltage Class Up to 36 kV (Medium Voltage Applications)
Halogen Content Halogen-free, silicone-free, non-corrosive, non-toxic
Available Designs Right Angle (CHRB) – 90° layout; Straight (CHSB) – inline layout
Dielectric Strength > 20 kV/mm
Operating Temperature –40 °C to +105 °C
Choosing The Correct Kit

Applications

  • Medium voltage switchgear and transformer cable-end boxes up to 36kV
  • Phase-to-phase and phase-to-ground insulation where clearances are limited
  • Indoor and outdoor installations exposed to humidity, pollution, or rodents
  • Prevention of flashover and discharge in contaminated environments

Selection Criteria

To identify the correct kit configuration, kindly confirm the following project details:

01

Voltage rating (up to 36kV)

02

Boot type: CHRB (Right Angle) or CHSB (Straight)

03

Bushing dimensions and cable size

04

Colour preference

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FAQS

Frequently Asked Questions (FAQ)

CHRB is a right-angle boot for 90° terminations; CHSB is a straight boot for inline connections.

Yes. They are manufactured from UV-stabilized, non-tracking cross-linked polyolefin and are designed to perform reliably in both indoor and outdoor conditions. 

Yes. Each boot is internally lined with hot melt adhesive for superior sealing.

Yes. The CHRB/CHSB boots are fully compatible with all COMPAQ heat shrink terminations

They insulate and protect the connection between a cable lug and an equipment bushing in medium voltage switchgear and transformer cable boxes, providing phase-to-phase and phase-to-ground insulation. 

No. Standard heating equipment is sufficient for installation, and the internal hot-melt adhesive lining ensures a secure and moisture-tight seal.