CP Varitherm DPA ...

Home

Products

Intertec protection systems

Heaters and Controllers

CP Varitherm DPA ...

CP VARITHERM is an electric ribbed heater designed for convection air heating inside a box.

1. Use

Heating of boxes in potentially explosive atmospheres. Designed for:

Frost protection
Condensation protection
Mostly for horizontal installation

2. Advantages

The horizontal design allows installation of the heaters under instrumentation in the protection box
Vertical installation is possible
Thermostat for frost protection in the supply cable (TS option)
High heat transfer through a large area of black aluminium ribs
The heater ribs can be removed and modified by the manufacturer if necessary for installation

3. Description

CP VARITHERM is an electric ribbed heater designed for convection air heating inside a box

The temperature class limiter is integrated into the heating block core and disconnects the power supply in case of a technical fault or overheating due to an external heat source. This limiter can only be repaired at the factory.
For safe operation, the heater must be operated under conditions that ensure that the heater is not exposed to temperatures higher than those specified on the limiter:

TS, TAE or TC thermostats shut off the heater if the cabinet temperature is high
To ensure sufficient convection, minimal distances must be observed. fig. below (point 7) and at the same time it is necessary to avoid covering of the heater's ribs.
CP VARITHERM DPA 300/100 T4 must be installed only horizontally (see section 7.1).

For any specific applications requiring high temperature maintenance we will be pleased to select the suitable combination of heater and controller.

A temperature indicator shows potential problems and failures at an early stage (e.g. incorrect installation). Please check the application if more than 3 fields have irreversibly changed to black!

4. Technical parameters

Explosion protection	II 2 G Ex dm IIC T3, T4, T5, T6 II 2 D Ex tDmD A21 IP65, T135°C, T200°C
EX certificate	PTB 02 ATEX 1041 X
Ingress protection	IP 68
Operating temperature	-50°C up to 180°C
Nominal voltage	230V AC (220-240 V Ac)
Supply cable	EWKF 3x1,5 mm² Ø8,8mm
Dimensions (L x W )	220 x 213mm
Length of supply cable	1 m
Material	Seawater-proof aluminium, black, anodized

All INTERTEC explosion-proof heaters can be delivered according to American NEC standards (CSA/NRTL/FM/UL) and are available also in cheaper safe area design.

5. Variants

5.1 - frost protection

CP Varitherm DPA ... TS	50 T6 100	200 T4 80	300 T3 60	400 T3 80	500 T3 100
Nominal power output	50 W	200 W	300 W	400 W	500 W
Temperature class	T6	T4	T3	T3	T3
Height	100 mm	80 mm	60 mm	80 mm	100 mm

5.2 - for temperature maintenance up to 40°C

CP Varitherm DPA ... TS40	200 T3 40	300 T3 80	125 T4 100
Nominal power output	200 W	300 W	125 W
Temperature class	T3	T3	T4
Height	40 mm	80 mm	100 mm

The temperature control must be ensured by an additional TAE thermostat or TC temperature controller.
(other types upon request)

6. Options

AM	Failure alarm opening at < 5 °C
3M	Supply cable length 3m
120 V	Nominal voltage 120V AC
250 V	Nominal voltage 250V AC (245-265 V AC)
MB	Stainless steel mounting brackets

Ordering example: CP VARITHERM DPA 200 T3 40 TS 3M

7. Installation and minimum clearances

When installing the heater, make sure that the label is always legible.
Installation on a mounting plate or rail inside of protection box is possible.

With two mounting brackets made of galvanized steel