Flat heating plates

for housings, switch cabinets and devices

Low surface temperature

> Limited space requirement, just 3mm thick

> Even heat distribution over the whole surface

> Without ventilator – no dust whirls

> Maintenance-free, long service life

Housings with electrical, electronic or mechanical installations are often subject to temperature

fluctuations, which lead to condensation, corrosion and leakage currents. In order

to guarantee the functional safety of these installation elements, it makes sense and

is cost-efficient to create a balanced inside temperature. HORN heating consists of an

anodised 1.5 mm thick aluminium plate vulcanised onto a 1.5 mm thick silicone heating

film. A small amount of space is required thanks to this flat construction and extensive

heat radiation is still provided.

TECHNICAL DATA

Operating voltage 220 – 240 V, 50/60 Hz alternative 115 V, 50 Hz

Electrical power 40 W, 100 W, 200 W

Heating element Silicone heating

Surface temperature With bi-metal 65/45°C controller, higher temperatures

can be reached without a temperature controller

depending on the environmental conditions

Connection 0,5 m line 2 x 0,75 mm2

Plate Aluminium

Fixing Retainer bracket on TS 35 mounting rail or M4 screws

Protection type/class IP X4 / 1

Approvals VDE + UL

INSTALATION NOTES

Installation must take place according to the valid

VDE and CE guidelines for the respective application.

The corresponding protection measure and contact

protection are to be realised by the user with

installation. To achieve good temperature control

in the full space in the housing, the heating plate

should be mounted in the lowest area. A distance

of at least 10 mm to the side walls and 50 mm to

the underside is required so convection can form.

A distance of 35 mm to thermo-plastic parts is

recommended. A separate room temperature controller

in front of the heating plate must be switched

to control the inside housing temperature.

ESTABLISHMENT OF NECESSARY HEATING POWER

The necessary heating power depends on the following parameters:

> Location (inside, outside), switch cabinet size (surface)

> Environmental temperature, material, insulation, loss power of installed components

> An estimated calculation is possible as follows:

a.) Standstill heating: inside P = T (K x A)

outside P = T (K x A) x2

b.) Operating heating: inside P = T (K x A) – Pv

(Installation devices switched on) outside P = T (K x A) x2 – Pv

P = required heating power

T = Temperature difference between the required average switch cabinet inside

temperature and environmental temperature

K = heat transmission figure (for steel sheet metal 5 – 6 W/m2 K)

A = overall free-standing housing surface in m2

Pv = overall installed loss power in W