445009, Samara region, mountains. Tolyatti st.
Novozavodskaya 2a, building 309
Novozavodskaya 2a, building 309
These control units are designed for switching and indicating the operating mode of AC and DC electrical circuits at industrial frequency in hazardous areas. They are explosion-proof and certified "1Ex d IIB T6 Gb" and can be used in Class 1 and 2 hazardous areas according to GOST IEC 60079-10-1-2011. The enclosure is made of aluminum alloy.
The post contains up to three switching elements (a pushbutton, a switch) or indicators (an LED lamp). The element types are specified when ordering. Posts can have signs with operational inscriptions in Russian and foreign languages, such as "Start," "Stop," etc. The posts are designed for connecting armored and unarmored round electrical cables, as well as cables in metal sleeves or pipes.
The posts are supplied with cable entries of various designs:
| Explosion protection marking | 1Ex d IIB T6 Gb |
| Degree of protection of the shell | IP66 |
| Operating temperature range | -60 .. +60°С |
| Number of cable entries | 1-2 |
| Maximum cross-section of connected conductors | 2.5mm 2 |
| Overall dimensions without cable entries | 335x180x130mm |
| Weight, no more than | 10 kg |
| Contact group | |
| Maximum voltage | |
| AC | ~660V |
| D.C. | =440V |
| Maximum contact current | 10A |
| Minimum contact current | 0.05A |
| Type of load | Active / Inductive |
| Electrical wear resistance, VO cycles, not less than | |
| buttons | 6*10 5 |
| switches | 10 5 |
| Mechanical wear resistance, cycles of VO, not less than | |
| buttons | 3*10 6 |
| switches | 3*10 5 |
| Rated voltage of indicator lamps, direct current or alternating current | 24V, 220V |
Ordering designation scheme:
PKV MK -type B 1ExdIIBT6Gb – A[ n(x1), n(x2), … ] – B[ x ] – C[ n(x1), n(x2), … ] – D[ x ] –
– S[ s1c1–k1–m1, s2c2–k2–m2, s3c3–k3–m3 ]
1 – control post type and explosion protection type: PKV MK - type B 1ExdIIBT6Gb ;
2 – area of description of cable entries:
“A”, “C” – markers of the section describing the large sides of the box A and C;
“B”, “D” – markers of the description section of the small sides of the box B and D;
x, x1, x2 … - types of cable entries (see “Typical cable entries”, p. …):
3/4K – for open cable installation with a diameter of 10-18 mm;
3/4B – for armoured cable with a through diameter of 10-18 mm and an external diameter of up to 25 mm;
3/4T1/2 – for laying cable with a diameter of 10-14 mm in a pipe with a G1/2 connecting thread;
3/4T3/4 – for laying cable with a diameter of 10-18 mm in a pipe with a G3/4 connecting thread;
3/4KM20, 3/4KM25, 3/4KM32 – for laying cable with a diameter of up to 18 mm in a metal sleeve with a metal sleeve diameter of 20 mm, 25 mm, 32 mm, respectively.
3 – control elements description area:
“S” – marker of the control description section;
s1, s2, s3 – conventional designation of the control element (see table “Typical controls” ) in the order of listing from top to bottom;
c – color (only for lamps and buttons K10, K11):
k – red; z – green; zh – yellow; ch – black;
k – contact type (only for buttons and switches):
NONO, NONZ, NZNZ, NZ, BUT;
m – operational inscription (nameplate):
the text of the inscription is indicated in quotation marks, for example “START”, it is desirable to use standard inscriptions (see table “Standard operational inscriptions” );
For multi-position switches, a list of inscriptions is indicated, separated by commas, in order of increasing switch position number, for example, “ POSITION 1”, “POSITION 2”.
Example of notation:
PKV MK -type B 1ExdIIBT6Gb – B[3/4T1/2] – D[2(3/4B)] – S[K11ch-NONO-sh1, L24z-sh3, P30-NONZ-sh6, sh10, sh9]
A post with explosion protection marking “1Ex d IIB T6 Gb”, a G3/4 threaded entry for a G1/2 pipe on side B and two G3/4 threaded entries for armoured cable on side D, a black “START” pushbutton with a lock and two NO+NO contacts, a green “WORK” indicator for 24V, a three-position switch with a lock 0-“OFF”, I-“RIGHT”, II-“LEFT” with two NO+NC contacts.
