This document provides information on a self-regulating heating cable designed for open space and ramp heating applications. The cable is highly robust and flexible, allowing for installation in harsh conditions like parking garages, helicopter landing sites, and concrete ramps. It is radially and longitudinally waterproof with an outer jacket that is pressure-grouted for protection. Technical specifications are provided, including dimensions, weight, voltage, temperature ratings, and heating circuit length guidelines.

1. Concrete and ramp heating cable
for open space and ramp heating
This heating cable is designed for easy and safe installation of open-space heaters. Accidents due to
frost and snow are prevented all over the heated space. To ensure a high mechanical load capacity in
open space, the eltherm engineers developed this heating cable especially robust. Suited for instal-lation
Advantages:
Highly robust
Suited for hardest installing conditions
Flexible mounting
Radially and longitudinally waterproof,
outer jacket is strongly grouted with
protective braid
Applications:
Parking garages entrances and exits
Helicopter landing sites
Concrete ramps
Stairs and footpaths
in sand/cement mixtures.
Type ELSR-Ramp
self-regulating heating cable
Tel: +44 (0)191 490 1547
Fax: +44 (0)191 477 5371
Email: northernsales@thorneandderrick.co.uk
Website: www.heattracing.co.uk
www.thorneanderrick.co.uk

2. Technical information
Data
Protective braid
Cu, tin plated
Type ELSR-Ramp
Self-regulating
heating element
Bus wire
Outer jacket
(presure-grouted
with outer jacket)
Insulation
Outer jacket TPE
Bus wire nickel plated copper
Maximum exposure temp. (power off) 100 °C
Maximum exposure temp. (power on) 80 ° C
Nominal voltage 230 V
Bending radius, minimum 50 mm
Installation temperature, min. – 20 ° C
Nominal output approx. 50 W/m at 10 ° C (110 W/m in
concrete @ 5° C)
Dimensions approx. 17,2 mm x 9,5 mm
Weight approx. (g/m) 253
Heating circuit lengths ELSR-Ramp on the following conditions:
230 V nominal voltage
Delayed action circuit breakers (C-characteristic) with 80 % maximum load
Maximum 10 % line voltage drop on the heating cable bus wire
One (1) single end power input heating cable
Switch-on
tempe-rature
Nominal cu-tout
value
(A)
Heating circuit length (m) for
ELSR-RAMP
-10
10 18
16 28
20 36
25 45
32 55
* Heating circuit lengths may vary in specific installation situations. Please
contact our engineers for more details.
Type Art. No.
ELSR-Ramp B02RAMP0
Electrical protection
Maximum heating circuit length
According to local standards and regulations.
Take into account the conductor size and max. permitted voltage drop.
A higher voltage drop can occur at start-up of heating.
Power at start-up
To determine the installed power with the electrical system designer, the nominal current of the series connected fuse or the current value at the
system start-up temperature must be taken into account (e.g. 32 A for 55 m ELSR-Ramp (–10°C).
Residual current device (RCD) 30 mA required, max. 500 m heating cable per RCD.
Remark
For the use of standard control cabinets, the maximum heating circuit length of 55 m at 32 A per heating circuit must not be exceeded.
11/2012 – All rights reserved. Subject to change without notice.