• Distribution and Terminal Boxes
  • Control and Automation Cabinets
  • Lighting Equipment
  • Control and Indicating Stations
  • Visual, Audible and Signaling Devices
  • Electrical Heating and Fans
  • Video Surveillance
  • IT equipment
  • Spark protection barriers and functional safety relays
  • Cable Glands, Conduits
  • Sockets, Plugs, Extension cords
  • Switches, Selectors Switches, Sensors
  • Control and Measuring Instruments
  • Cable/Pipe Transits
  • Electrical Components and Materials
Logo

Explosion-proof boxes GTG-VK2 for connecting power under thermal insulation to heating equipment

Product Description

The GTG-VK2 is an effective solution from GORELTEX for connecting power and inserting cables under thermal insulation in electric heating systems. It simplifies installation and prevents damage to the heating cable when inserting it under thermal insulation. It also allows for splicing heating cable sections for T-shaped branches. The GTG-VK2 is suitable for all types of GTG heating fittings and third-party cables.

The OKT-2 support brackets are designed to easily attach to round pipes. The box is secured to the pipe using a metal cluminaire included in the delivery kit. The cluminaire ensures ground integrity between the pipe and the box body.

Explosion-proof GTG-VK2 boxes allow connection of up to three heating cables and temperature sensor cables. Seal type must be specified upon order.

Upon customer request, multiple OKT-2 support brackets can be installed on the enclosure to connect more than three heating elements, and the terminal block arrangement inside the box can be changed. The devices are manufactured with varying OKT-2 support bracket heights (H) below the thermal insulation thickness, ensuring a sealed thermal insulation and eliminating the risk of cable damage at the termination points. The mechanical strength of the GTG-VK2 significantly exceeds that of standard DESTU polyester thermal insulation entry and feedthrough devices, allowing operation at temperatures down to -75°C (high-quality DESTU devices down to -40°C, while budget-friendly devices can only operate down to -20°C). They support the connection of flat heating cables up to 17 mm wide.

Special elastic silicone seals for inserting heating cables
Scope: explosion-hazardous areas of premises and outdoor installations according to explosion protection marking, GOST 30852.13-2002 (IEC 60079-14:1996) and areas dangerous for ignition of combustible dust, according to GOST IEC 61241-3-2011, hazardous industrial facilities of I, II, III, IV hazard classes, supervised by Rostekhnadzor of the Russian Federation and national technical supervision agencies of the CU and CIS countries.

The mechanical strength and impact resistance of OKT-2 support brackets significantly exceeds their polyester counterparts, many of which break at temperatures as low as -20°C, even under light loads.

Frequently bought together

Compliance with standards

GOST R IEC 60079-0-2011
GOST 12.2.007.0-75. Occupational Safety Standards
GOST 14254-96 (IEC 529-89)
GOST 30852.0-2002 (IEC 60079-0:1998)
GOST 30852.8-2002 (IEC 60079-0:1998)
TR CU 012/2011
TR CU 004/2011
GOST IEC 61241-1-1-2011
Chapter 7.3 of the Electrical Installation Code
Chapter 7.4 of the Electrical Installation Code
RD 5.2-093-2004
GOST 30852.20-2002
GOST 24754-2013
GOST R IEC 60079-31-2010

Certificates

Markings

Explosion protection marking
1Ex db e IIC T6...T4 Gb
Ex tb IIIC T85°С...T135°С Db
Marking of mining equipment
RN1
RN2
Degree of protection
IP66
Installation
Category II for gas subgroups IIA, IIB, IIC, zones 1, 2;
Category III for dust, explosive dust atmospheres
containing volatile particles, non-conductive and conductive dust;
Non-hazardous zone of surface structures and open areas,
Underground workings that are not hazardous for gas and dust.

Technical data

Ambient temperature, °C
-60...+40 (T6/T85°C)
-60...+60 (T5/T100°C)
-60...+70 (T4/T135°C)
-60...+85 (T4/T135°C)
-60…+85 (for RN1/RN2 version)
Maximum voltage, V
800
Maximum current, A
175
Size of connected heating cable, mm
up to 17
Diameter of the connected power cable and cable entry size
from 6 mm to 12 mm for cable entry KNV1 (default)
from 12 mm to 18 mm for cable entry KNV2
from 6 mm to 12 mm for cable entry KOV1
from 12 mm to 18 mm for cable entry KOV2
other entry at customer's request
Grounding
2 ground cluminaires (internal and external) made of stainless steel
Box cover
Antistatic polymer-epoxy coating, friction-proof, spark-proof, resistant to working environments and ionizing radiation. Color RAL 7035
Box material
Aluminum alloy with alloying modifiers
Bracket material
Nickel-plated brass
Fixation on the pipe
1 pipe mounting cluminaire
Protection class against electric shock
I
Weight, kg
3
Climatic category
NF1 (as required NF2, NF3, NF4, NF5, HL1, HL2, HL3, HL5, T1, T2, T3, T5, MU1, MU2, MU3, MU4, W2.1 , W5 )

Design parameters

GTG-VK2

DESIGN PARAMETERS OF THE GTG-VK2

Sealing rubber for heating cable for GTG-VK2

Sealing rubber for heating cable for GTG-VK2

Overall and connection dimensions
Body type Dimensions Maximum recommended number of terminals by wire cross-section, mm2
A B C H 1,5 2,5 4
GTG-VK2-111109 112 112 91 150 5 5 4
GTG-VK2-141410 149,5 149,5 107 150 24 22 20
GTG-VK2-171109 172 112 91 150 17 16 14

Options

Options, accessories and versions
Marking
Other bracket height (for orders of 1000 pcs. or more)
/H (height in mm)
Indication of the presence of voltage on current-carrying terminals
/IN
Round heating cable
/KGC
Possibility of connecting a temperature sensor
/PKT
Non-explosion-proof design
/PROM
Mining normal design
/RN

Additional information

Submit request

Quantity
Additional description
0 / 300

Drag files here

CAD " GORELTEX ", questionnaires, necessary documents

Remaining: 20.00 MB
or
Model Breakdown
GTG-VK2 - 1X - 2X - 3X - 4X / 5X – TU 27.33.13-033-72453807-2017
1X - Case size code
2X - Diameter of the heated pipe
3X - Type of installed terminals
4X - Number and size of cable glands Sides of the location of cable glands
5X - Options, accessories and versions

Where to buy GORELTEX products

Saint Petersburg

Head office and production site

Telephone
Address
193149, Leningrad region, Vsevolozhsk district, Novosaratovka village, Rabochaya street, house 9, building 1
Read more

Moscow

Sales office

Telephone
Address
123112, Moscow, Presnenskaya Embankment, 6, building 2, business complex "Imperia Tower", floor 12, office No. 15
Read more

Kazan

Sales office

Telephone
Address
420061, Russia, Republic of Tatarstan, Kazan, st. Nikolay Ershova, 1A, Korston Business Center, floor 11, office No. 1110
Read more

Tyumen

Sales office and production site

Telephone
Address
625031, Russia, Tyumen, Shcherbakova St., 160G
Read more