Control posts of the PKV MK 3.3 Exd series

Explosion-proof control posts, models: PKV MK 3.3 Exd-A-101006/101009, PKV MK 3.3 Exd-N-101006/101009, are designed for switching, controlling and indicating the operating modes of electrical circuits of alternating and direct current of industrial frequency in explosive zones, as well as for connecting armored and unarmored electrical cables of round or flat cross-section in a metal sleeve or pipe.

The material used for the production of control posts is aluminum alloy or stainless steel 12X18H10T.

Control posts 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".

The equipment belongs to electrical equipment groups I, II, and III according to GOST 31610.0-2014 and is intended for use in hazardous areas of indoor and outdoor installations in accordance with the explosion protection marking. The equipment can be used in hazardous areas of classes 0, 1, and 2 according to GOST IEC 60079-10-1-2011, as well as in mines and pits according to GOST 31439-2011 (EN 1710:2005). The environment may contain explosive mixtures of gases and vapors with air of categories IIA, IIB, IIC, and dust IIIC.

Control posts of the PKV series, model range: PKV MK 3.3 Exd-A-101006/101009, PKV MK 3.3 Exd-N-101006/101009.
Marking for stainless steel for electrical equipment groups I, II and III	PB Ex db I Mb X / 1Ex db IIC T6… T3 Gb X / Ex tb IIIС T80°C… T190°C Db X
Marking for aluminum alloy for electrical equipment groups II and III	1Ex db IIC T6… T3 Gb Х / Ex tb IIIС T80°C… T190°C Db Х
Body material	stainless steel aluminum alloy
Housing material for mine applications	stainless steel
Type of explosion-proof connection	threaded connection
Degree of protection of the shell according to GOST 14254-2015	IP66
Ambient temperature under operating conditions	T6 - from -60 ⁰ C to +80 ⁰ C T5 - from -60 ⁰ C to +95 ⁰ C T4 – from -60 ⁰ C to +130 ⁰ C T3 - from -60 ⁰ C to +180 ⁰ 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 150 no more than 150
Switching voltage, V - alternating current - direct current	no more than 750 no more than 750
Number of switching or indicating elements (buttons, switches, lamps, etc.)	1

Model	Overall dimensions without cables inputs and external components	Installation dimensions	Body weight, no more than
Aluminum alloy
PKV MK 3.3 Exd-A-101006	100x100x62 mm	112 mm	2 kg
PKV MK 3.3 Exd-A-101009	100x100x92 mm	112 mm	2 kg
Stainless steel
PKV MK 3.3 Exd-N-101006	100x100x62 mm	112 mm	3 kg
PKV MK 3.3 Exd-N-101009	100x100x92 mm	112 mm	3 kg

Example of an order entry:

PKV MK 3.3 Exd-A-101006	*– B [x1]–* D [x2] –**	*S[ s1c1–k1–m1, s2c2–k2–m2, s3c3–k3–m3* ]**
1	2	3

1 – control post type and explosion protection type: PKV MK 3.3 Exd-A-101006/101009, PKV MK 3.3 Exd-N-101006/101009 ;
2 – type of cable entries:
B, D – short sides of the post;
n – multiplier of the number of inputs of the corresponding type, if there is one, it is not specified;
x1, x2, x3, x4 – types of cable entries, for example:
KV M20K – for open cable laying with connecting thread M20x1.5;
KV M20KM15 – for 15mm metal hose with connecting thread M20x1.5;
3 – control description area:
S – marker of the control description section;
s1, s2, s3 – control element symbol;
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).

Control posts of the PKV MK 3.3 Exd series

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