Explosion-proof thermostat DVG-TERMOSTAT3
PURPOSE AND SCOPE OF APPLICATIONExplosion-proof thermostat DVG-TERMOSTAT3 is intended for control of temperature conditions at hazardous facilities and in distribution boards and local control stations.
ADVANTAGES
- Small dimensions of the device.
- Small weight.
Depending on the model, the thermostat can be functionally normally open (NO) (e.g., for control of cooling system), or normally closed NC (e.g., for control of heater). Bimetallic thermostat capable of switching load current up to 10A is used as a temperature sensor.
Enclosure of the thermostat is made from aluminum-silicone alloy, body of the temperature sensor is made from fluoropolymer. Low thermal conductivity of fluoropolymer increases speed and accuracy of actuation of the themperature sensor and rules out impact of thermostat‘s enclosure temperature on it.

Marking:

1Ex db e IIC T6...T4 Gb

1Ex ia IIC T6...T4 Gb

Ex tb IIIC T70°С....T135°С Db

Ex ia IIIC T70°С....T135°С Da
Mining equipment marking:
РН1/РН2
Certificates and permits:
Maritime Register upon request (check cost and
terms of Type Approval Certificate issuance with
manager)
TU 27.12.31-037-72453807-2017
Ambient temperature, °С:
60...+60 (Т4/Т135°С)
-60...+60 (Т5/Т100°С)
-60...+40 (Т6/Т85°С)
Maximum voltage, V:

30 / ~220 / ~380
Maximum current, A:
10 (for

30 / ~220 V)
4 (for ~380 V)
Thread on connecting holes:
M25x1,5
Box material:
Aluminum-silicon alloy
Electric shock hazard protection class:
I
Climatic version:
NF1 (upon request NF2, NF3, NF4, NF5, F1, F2, F3, F5, T1, T2, T3, T5, MU1, MU2, MU3, MU4, W2.1, W5)
OVERALL AND MOUNTING DIMENSIONS

Type of thermostat
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Type of contact
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Actuating range |
DVG-TERMOSTAT3-(60/78)1 |
1NC |
60-68°C...72-78°C |
DVG-TERMOSTAT3-(0/18)1 |
1NC |
0-8°C...12-18°C |
DVG-TERMOSTAT3-(-5/13)1 |
1NC |
-5-3°C...7-13°C |
DVG-TERMOSTAT3-(21/17)0 |
1NO |
21-29°C...11-17°C |
DVG-TERMOSTAT3-(2/-2)0 |
1NO |
2-8°C...-10- -2°C |
DVG-TERMOSTAT3-(66/62)0 |
1NO |
66-74°C...56-62°C |
OPTIONS, ACCESSORIES AND VERSIONS
ORDER CREATION
External surface coating as per customer’s specification
/RAL (___)
Non-explosion-proof version
/PROM
Mine normal execution
/RN
FORMATION OF ORDER
DVG-TERMOSTAT3-Х |
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Х(Х) |
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Х |
– TU 3400-005-72453807-07 |
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Device name |
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Number of cable glands (max. 2 pcs.) |
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Options, accessories and versions |
EXAMPLE: DVG-TERMOSTAT3-(2/-2)0 - KNV2N -TU 3400-005-72453807-07
where DVG-TERMOSTAT3-(2/-2)0 - thermostat type, KNV2N - number and type of cable glands.
Examples of operation:
Connection diagram:
DVG-TERMOSTAT3 with NC contact

DVG-TERMOSTAT3 with NO contact

TR CU 012/2011, TR CU 004/2011, GOST R IEC 60079-0-2011, GOST 14254-96 (IEC 529-89), Ch. 7.3 PUE, Ch. 7.4 PUE, GOST 30852.0-2002 (IEC 60079-0:1998), GOST 30852.8-2002 (IEC 60079-0:1998), GOST IEC 61241-1-1-2011, GOST 30852.1-2002 (IEC 60079-1:1998), GOST 30852.10-2002 (IEC 60079-11:1999), GOST R IEC 60079-31-201