Product Series: CRTP

Elbow Terminal Protector for RMU and Transformer Bushings

Up to 24kV
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Product Overview

The COMPAQ Elbow Terminal Protector is designed to improve insulation reliability in compact cable entry boxes and RMUs where reduced clearances can increase the risk of air flashover. By providing an additional dielectric layer around live terminations, it supports safer operation in confined medium-voltage installations.

Manufactured from high-performance EPDM or Silicone rubber, the moulded protector offers strong dielectric strength, resistance to UV and tracking, and stable mechanical performance. Suitable for installation on epoxy bushings, the one-piece design enables quick installation and consistent insulation performance under service conditions.

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Product Benefits?

Quick and Easy Installation

One-piece, slip-on design allows rapid deployment on-site without tools or adhesives.

01

Wide Cable Compatibility

Supports cable cross-sections from 25 sq.mm to 300 sq.mm.

02

Prevents Flashover in Confined Spaces

Especially effective in humid, dusty, or rodent-prone environments.

03

Direct Voltage Testing Capability

Allows safe voltage detection without removing the protector.

04

Reusable & Cost-Effective

Long service life with the option to remove and reinstall.

05

Thermal Resilience

Continuous operation up to 90°C; withstands 130°C for 4 hours in overload conditions.

06

Fits Standard RMUs & Transformers

Specifically for applications with C-type bushings and limited clearance.

07
Specifications

Technical Specifications

Parameter Specification
Hardness 35 ± 10 Shore D (ASTM D2240)
Tensile Strength ≥10 N/mm² (ASTM D638)
Water Absorption ≤0.5% (ASTM D570)
CRTP-1224 (12 kV) 95 mm
CRTP-1224 (24 kV) 125 mm
Volume Resistivity ≥1 × 10¹³ Ohm·cm (ASTM D257)
Dielectric Constant ≤5 (ASTM D150)
Dielectric Strength ≥15 kV/mm (ASTM D149)
Ultimate Elongation ≥200% (ASTM D638)
Continuous Operating Temp −40 °C to +115 °C (IEC 216)
Emergency Overload Temp (4 hrs) +130 °C (–)
Impulse Withstand Test – 12 kV 75 kV
Impulse Withstand Test – 24 kV 125 kV
AC Withstand Test (1 min) – 12 kV 28 kV
AC Withstand Test (1 min) – 24 kV 50 kV
Choosing The Correct Kit

Applications

  • Ring Main Units (RMUs) with phase-to-phase clearance of 95 mm and phase-to-ground clearance of 60 mm
  • Air-insulated HT cable entry boxes and enclosures
  • Transformer bushings (46–56 mm diameter)
  • Metering panels, MS enclosures, and dry-type transformer terminations
  • Wildlife protection: prevents flashovers due to reptiles, birds, and rodents

Selection Criteria

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

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FAQS

Frequently Asked Questions (FAQ)

Yes. The material is UV- and weather-resistant, suitable for both indoor and outdoor installations.
It is designed primarily for bare or exposed bushing terminals. For screened connectors, COMPAQ offers other tailored boots.
Yes. The CRTP is designed to be reusable if removed carefully and undamaged.
Yes. It facilitates direct voltage testing without dismantling, ensuring safe operational diagnostics.