Explosion-proof Ex components, models: SMD MK 2.3 Exd-A-ХХХ… Х, SMD MK 2.3 Exd-Н-ХХХ… Х, are not intended for stand-alone use in hazardous areas, as the markings do not specify the zone of application or temperature class. The Ex component is used for further assembly and subsequent certification.
The material used for the production of Ex components is aluminum alloy or stainless steel 12X18H10T.
Ex-components are provided with the following types of explosion protection: GOST IEC 60079-1-2013 "flameproof enclosures "d"" and GOST IEC 60079-31-2013 equipment with dust ignition protection by enclosures "t".
Ex-components offer various flameproof connection options in accordance with GOST IEC 60079-1-2013. They are manufactured using either welded stainless steel or cast aluminum alloy. A viewing window can be located on the front cover of the enclosure.
| Control posts of the PKV series, model range: PKV MK 2.3 Exd-A-ХХХ… Х, PKV MK 2.3 Exd-Н-ХХХ… Х. |
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| Stainless steel marking for group electrical equipment I and III |
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| Marking for stainless steel and aluminum alloy for electrical equipment groups II and III |
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| Body material | stainless steel aluminum alloy |
| Housing material for mine applications | stainless steel |
| Type of explosion-proof connection | cylindrical connection |
| Internal volume, cm 3 | more than 2000 |
| Degree of protection of the shell according to GOST 14254-2015 | IP66 |
| Ambient temperature under operating conditions | T6 - from -60°C to +80°C T5 - from -60°C to +95°C T4 – from -60°C to +130°C T3 - from -60°C to +180°C |
| Temperature class according to GOST 31610.0-2014. | T6, T5, T4, T3 |
| Climatic performance | HL (F), UHL (NF), OM (MU) |
| Switching current, A - alternating current - direct current |
no more than 800 no more than 800 |
| Switching voltage, V - alternating current - direct current |
no more than 1000 no more than 1000 |
| Model | Overall dimensions without cable entries and external components |
Interior space on the mounting panel |
Installation dimensions |
| Aluminum alloy | |||
| PKV MK 2.3 Exd-A-121211 | 120x120x107 mm | 94x94x69 mm | 100x145 mm |
| PKV MK 2.3 Exd-A-151512 | 151x151x113 mm | 124x124x78 mm | 126x174 mm |
| PKV MK 2.3 Exd-A-171713 | 175x175x120 mm | 146x146x85 mm | 150x195 mm |
| PKV MK 2.3 Exd-A-232316 | 235x235x146 mm | 203x203x106 mm | 196x267 mm |
| PKV MK 2.3 Exd-A-272722 | 277x277x195 mm | 248x248x152 mm | 236x316 mm |
| PKV MK 2.3 Exd-A-434329 | 430x430x235 mm | 395x395x182 mm | 390x480 mm |
| Stainless steel | |||
| PKV MK 2.3 Exd-N-171713 | 175x175x120 mm | 146x146x85 mm | 150x195 mm |
| PKV MK 2.3 Exd-N-232316 | 235x235x146 mm | 203x203x106 mm | 196x267 mm |
| PKV MK 2.3 Exd-N-272722 | 277x277x195 mm | 248x248x152 mm | 236x316 mm |
| PKV MK 2.3 Exd-N-434329 | 430x430x235 mm | 395x395x182 mm | 390x480 mm |