- BrandНПП «МАГНИТО-КОНТАКТ»
- Country of manufactureRussia
Passport
Certificate of Conformity No. EAES RU С - RUВН02В.00349 / 20 to the requirements of the Technical Regulations TR CU 012/2011 "On the Safety of Equipment for Operation in Explosive Environments" . Valid from 02/14/2020 to 10/02/2024
You can buy from us at an affordable price an explosion - proof cable gland of various types - for armored cable, for non - armored cable, under a metal hose, under a pipe ½ and ¾, for open cable laying.
1. Purpose and conditions of use
Explosion - proof cable glands of the MKV series are Ex - cable glands (GOST 31610.0 - 2014 (IEC60079 - 0: 2011) and are designed to enter flexible cables into explosion - proof equipment. The glands can be used with armored and non - armored cables of round cross - section, as well as cables laid in a pipe or metal hose.
Bushings are produced in versions differing in size and type of connecting thread, type of connected cable.
MKV bushings are manufactured with the type of explosion protection:
"Flameproof enclosure" d "according to GOST IEC (60079 - 1 - 2011),
"Increased protection type" e "in accordance with GOST 30610.7 - 2012 / IEC (60079 - 7 - 2006),
"Explosion protection" i "according to GOST 31610.11 - 2014 (IEC 60079 - 11: 2011),
from dust ignition by shells "t" GOST IEC (60079 - 31 - 2013).
and are marked with explosion protection 1Ex d IIС Gb / PB Ex d I Mb or Ex tb IIIС Db or 0Ex ia IIC Ga or 1Ex e IIС Gb.
The bushings can be used in hazardous zones of classes 1 and 2 according to GOST IEC (60079 - 10 - 1 - 2011), classes 21 and 22 according to GOST IEC (60079 - 10 - 2 - 2011) in accordance with the explosion protection marking. The environment may contain explosive mixtures of gases and vapors with air of categories IIA - IIC, dust atmospheres of categories IIIA - IIIC.
Depending on the type of cable to be inserted, cable glands are divided into types that differ in design:
- to enter an open cable,
- for a cable laid in a pipe,
- for a cable in a metal hose,
- for armored cable with wire armor,
- armored cable with double seals (sealing both the inner and outer sheath of the cable)
The bushings are of the climatic version UHL1 in accordance with GOST 15150 - 69 and can be operated at temperatures from minus 60 ° С to plus 90 ° С at atmospheric pressure from 630 to 800 mm Hg. Art. and relative air humidity 95% at 35 ° C and lower temperatures, without moisture condensation.
2. Specifications
2.1. Main technical characteristics of MKV bushings:
Connecting thread type: cylindrical pipe (G) and metric (M).
Cable glands MKV are made of stainless steel 12X18H10T GOST 5632 - 72 or steel St35, St40 GOST 1050 - 80, anti - corrosion coating - zinc. O - rings are made of rubber mixture 3063 TU 38 - 1051082 - 86.
The degree of protection of the bushing shell is IP66 / IP68 in accordance with GOST 14254 - 2015 (IEC 60529: 2013).
Cable glands are manufactured in accordance with table 1.
2.2. Each cable gland comes with a set of rubber seals and associated protective plugs. Protective plugs are used to close unused cable glands for connecting wires up to 22mm in diameter.
2.3. Cable glands provide high mechanical strength of the threaded connection with the sheath of electrical equipment when torque is applied in accordance with the requirements of GOST IEC (60079 - 1 - 2011).
2.4. Cable glands are sealed when a hydraulic pressure of at least 3000 kPa is applied for equipment of group II for 10 s in accordance with the requirements of GOST IEC 60079 - 1 - 2011.
2.5. Cable glands provide reliable fastening of flexible and armored cables in accordance with the requirements of GOST 31610.0 - 2014 (IEC 60079 - 0: 2011).
2.6. Reliability indicators:
- MTBF is not less than 100,000 hours.
- average service life not less than 16 years
Table 1
| A TYPE | SYMBOL | THREAD, DXP, L | TURNKEY SIZE S, MM | PASSAGE (EXTERNAL * ) CABLE Ø * * , MM | DIMENSIONS, MM |
|---|---|---|---|---|---|
| Open cable routing | MKV G1 / 2K | G1 / 2, 20mm | 27 | 6 - 12 | 31x72 |
| MKB M20K | М20х1.5,20mm | 31x72 | |||
| MKB G3 / 4K | G3 / 4, 25mm | 36 | 10 - 16 | 41x96 | |
| MKB M25K | М25х1.5.25mm | 41x96 | |||
| MKV M32K | М32х1.5,30mm | 50 | 16 - 26 | 55x112 | |
| MKV M40K | М40х1.5,30mm | 22 - 30 | 55x112 | ||
| MKV M50K | М50х1.5,30mm | 65 | 30 - 42 | 75x120 | |
| Pipe with G1 / 2 thread | MKV G1 / 2T1 / 2 | G1 / 2, 20mm | 27 | 6 - 12 | 31x113 |
| MKV M20T1 / 2 | М20х1.5,20mm | 31x113 | |||
| Pipe with G3 / 4 thread | MKV G1 / 2T3 / 4 | G1 / 2, 20mm | 31x113 | ||
| MKV M20T3 / 4 | М20х1.5,20mm | 31x113 | |||
| MKV G3 / 4T3 / 4 | G3 / 4, 25mm | 36 | 10 - 16 | 41x120 | |
| MKV M25T3 / 4 | М25х1.5.25mm | 41x120 | |||
| Pipe with G1 thread | MKV M32T1 | М32х1.5,30mm | 50 | 16 - 26 | 55x135 |
| Pipe with G1 thread¼ | MKV M40T5 / 4 | М40х1.5,30mm | 22 - 30 | 55x138 | |
| Pipe with thread G1½ | MKV M50T3 / 2 | М50х1.5,30mm | 65 | 30 - 42 | 75x142 |
| Metal hose RZTs 10 mm | MKV G1 / 2KM10 | G1 / 2, 20mm | 27 | 6 - 8 | 31x82 |
| MKV M20KM10 | М20х1.5,20mm | 31x82 | |||
| Metal hose RZTs 12mm | MKV G1 / 2KM12 | G1 / 2, 20mm | 6 - 10 | 31x87 | |
| MKV M20KM12 | М20х1.5,20mm | 31x87 | |||
| Metal hose RZTs 15mm | MKV G1 / 2KM15 | G1 / 2, 20mm | 6 - 12 | 31x87 | |
| MKV M20KM15 | М20х1.5,20mm | 31x87 | |||
| Metal hose RZTs 20mm | MKV G3 / 4KM20 | G3 / 4, 25mm | 36 | 10 - 16 | 41x100 |
| MKV M25KM20 | М25х1.5.25mm | 41x100 | |||
| Metal hose RZTs 25mm | MKV G3 / 4KM25 | G3 / 4, 25mm | 36 and 41 | 10 - 16 | 41x100 |
| MKV M25KM25 | М25х1.5.25mm | 41x100 | |||
| MKV M32KM25 | М32х1.5,30mm | 50 | 16 - 22 | 55x112 | |
| Metal hose RZTs 32mm | MKV M32KM32 | М32х1.5,30mm | 16 - 26 | 55x112 | |
| MKV M40KM32 | М40х1.5,30mm | 22 - 26 | 55x115 | ||
| Metal hose RZTs 38mm | MKV M50KM38 | М50х1.5,30mm | 65 | 30 - 32 | 75x118 |
| Armored cable. Crimping wire armor |
MKV G1 / 2V | G1 / 2, 20mm | 27 | 6 - 12 (18) | 31x72 |
| MKV M20V | М20х1.5,20mm | 31x72 | |||
| MKV G3 / 4V | G3 / 4, 25mm | 36 | 10 - 16 (25) | 41x96 | |
| MKV M25V | М25х1.5.25mm | 41x96 | |||
| MKV M32V | М32х1.5,30mm | 50 | 16 - 26 (38) | 55x112 | |
| MKV M40V | М40х1.5,30mm | 22 - 26 (44) 26 - 30 (44) |
55x112 | ||
| MKV M50V | М50х1.5,30mm | 65 | 30 - 36 (54) 36 - 42 (54) |
75x120 | |
| Double sealed armored cable. Crimping wire armor | MKV G1 / 2V2 | G1 / 2, 20mm | 27 | 6 - 10, 10 - 12 (18) | 31x96 |
| MKV M20V2 | М20х1.5,20mm | 31x96 | |||
| MKV G3 / 4V2 | G3 / 4, 25mm | 36 | 10 - 12.5; 12.5 - 16 | 41x111 | |
| MKV M25V2 | М25х1.5.25mm | 41x111 | |||
| MKV M32V2 | М32х1.5,30mm | 50 | 16 - 22; 22 - 26 | 55x126 | |
| MKV M40V2 | М32х1.5,30mm | 22 - 26 (44) 26 - 30 (44) |
55x128 | ||
| MKV M50V2 | М40х1.5,30mm | 65 | 30 - 36 (54) 36 - 42 (54) |
75x135 |
* outer diameter is indicated only for armored cable
* * in the case of using an armored cable with a cable gland for a metal hose (KM), the permissible diameter of the armored cable is limited by the maximum and minimum diameter of the cable gland for the outer and inner sheath of the armored cable, respectively.
2.7. Designation scheme for cable glands execution options when ordering:
| MKV | М25Т3 / 4 | H | PASHK.305331.132TU |
| 1 | 2 | 3 | 4 |
| series designation | symbol of thread (M25) and type of entry (T3 / 4) | "C" or without designation - steel with anti - corrosion coating "zinc" "N" - stainless steel |
technical conditions |
Sample order:
Cable gland MKV М25Т3 / 4 PASHK.305331.132TU
Marking of cable glands: 1Ex d IIC Gb / PB Ex d I Mb or Ex tb ILC Db or 0Ex ia IIC Ga or 1Ex e IIC Gb
3. Completeness
3.1. The delivery set corresponds to Table 2.
| NAME | QUANTITY | NOTE |
|---|---|---|
| Cable gland assembly | 1 | |
| O - ring kit | 1 | One seal per cable range |
| Protective plug | 1 | On cable gland |
| Passport | 1 |
4. Device
4.1. Each type of cable gland has executions that differ in the connecting thread and diameter of the cable to be inserted (Table 1).
4.2. The bushing is a metal body inside which there is a sealing sleeve, clamped by a pressure sleeve, a nut (Fig. 1). Sealing and fixing of the cable is performed with a sealing sleeve. The double sealed cable gland seals both the inner and outer sheaths of the armored cable by using an additional grommet.
The bushing body has a metric or cylindrical pipe thread for installation in the shell wall.
Description of designs and sizes of inputs given in Annex A .
5. Ensuring explosion protection
5.1. Explosion protection type "flameproof enclosure" d ".
Explosion - proof design of cable glands is ensured by meeting the requirements of GOST 31610.0 - 2014 (IEC60079 - 0: 2011 and the type of explosion protection "flameproof enclosure" d "according to GOST IEC (60079 - 1 - 2011) due to the implementation of the following design solutions:
- execution of cable glands with thread parameters, dimensions of the sealing sleeve according to GOST IEC (60079 - 1 - 2011)
- ensuring the mechanical strength of cable entry sheaths in accordance with GOST 31610.0 - 2014 (IEC 60079 - 0: 2011)
- electrostatic intrinsic safety of the bushing body is ensured by the choice of construction materials GOST 31610.0 - 2014 (IEC 60079 - 0: 2011)
- ensuring reliable fastening of cables in accordance with the requirements of GOST 31610.0 - 2014 (IEC 60079 - 0: 2011)
- ensuring the mechanical strength of threaded bushings when applying a torque in accordance with GOST IEC (60079 - 1 - 2011)
- ensuring the heat resistance of sealing rings GOST 31610.0 - 2014 (IEC 60079 - 0: 2011)
- seals and connections ensure the degree of protection against external influences IP66 / IP68
- ensuring the tightness of cable glands when a hydraulic pressure of 3000 kPa is applied for group equipment for 10 s in accordance with GOST IEC (60079 - 1 - 2011).
5.2. Explosion protection type "increased protection type" e ".
Explosion - proof design of cable glands is ensured by meeting the requirements of GOST 31610.0 - 2014 (IEC60079 - 0: 2011) and the type of explosion protection "increased protection type" e "in accordance with GOST IEC (60079 - 7 - 2012) due to the implementation of the following design solutions:
- seals and connections ensure the degree of protection against external influences IP66 / IP68
- electrostatic intrinsic safety of the bushing body is ensured by the choice of construction materials GOST 31610.0 - 2014 (IEC 60079 - 0: 2011)
- mechanical strength of cable gland sheaths in accordance with GOST 31610.0 - 2014 (IEC 60079 - 0: 2011).
5.3. Explosion protection type "i" intrinsically safe electrical circuit.
Explosion - proof design of cable glands is ensured by meeting the requirements of GOST 31610.0 - 2014 (IEC60079 - 0: 2011) and the type of explosion protection "intrinsically safe electrical circuit" i "in accordance with GOST 31610.11 - 2014 (IEC 60079 - 11: 2011) due to the implementation of the following design solutions:
- electrostatic intrinsic safety of the bushing body is ensured by the choice of construction materials GOST 31610.0 - 2014 (IEC 60079 - 0: 2011)
- seals and connections ensure the degree of protection against external influences IP66 / IP68.
5.4. Explosion protection "t" type against dust ignition by sheaths.
Explosion - proof design of cable glands is ensured by meeting the requirements of GOST 31610.0 - 2014 (IEC60079 - 0: 2011) and type of explosion protection "t" against dust ignition by enclosures according to (IEC 60079 - 31 - 2013) due to the implementation of the following design solutions:
- electrostatic intrinsic safety of the bushing body is ensured by the choice of construction materials GOST 31610.0 - 2014 (IEC 60079 - 0: 2011)
- seals and connections ensure the degree of protection against external influences IP66 / IP68.
6. Intended use
6.1. Operating restrictions
6.1.1. The bushings can be used in hazardous zones of classes 1 and 2 according to GOST IEC (60079 - 10 - 1 - 2011), classes 21 and 22 according to GOST IEC (60079 - 10 - 2 - 2011) in accordance with the explosion protection marking.
6.1.2. It is prohibited to operate cable glands that have served their full specified service life.
6.2. Preparing the product for use
6.2.1. Before installation, the input must be inspected, checked
- explosion protection marking
- no mechanical damage
- complete set
6.2.2. Disassemble the bushing before installation. Screw the body with the connecting thread into the wall of the shell to be connected up to the stop, not less than five threads of the thread and tighten. Sealing of a threaded connection is allowed to be carried out with anaerobic sealants such as Unigerm - 7, Anaterm 501M.
The use of a seal such as fum tape or linen packing is prohibited.
6.2.3. Installation of the connected cable:
- unscrew the input nut and remove the pressure sleeve and the O - ring
- prepare the connected cable for installation
- screw the necessary pipe fittings onto the nipple of the inlet intended for the pipe laying of the cable
- check the conformity of the O - ring to the connected cable
It is forbidden to use a cable gland (with a standard O - ring) that does not correspond to the size of the cable used and the use of O - rings from other manufacturers or made by yourself.
- put the nut, pressure sleeve (or fitting) and the O - ring sequentially on the prepared cable
- insert the prepared cable into the bushing, tighten the nut (or union) of the bushing with the tightening torque specified in the table:
| Cable diameter, mm | Tightening torque, Nm |
| 6 - 12 | 28 |
| 12 - 16 | 53 |
| 16 - 22 | 78 |
| 22 - 26 | 118 |
| 26 - 32 | 168 |
| 32 - 40 | 246 |
| 40 - 50 | 350 |
- in cable glands intended for connecting a pipe, tighten the lock nut to prevent the fitting from turning
- when installing armored cable, evenly distribute the wire armor between the cone and the pressure sleeve, crimp the armor and seal the cable with a nut
- check the quality of the cable clamp in the gland for pulling out
6.2.4. The installation of the cable gland and the cable entry must be carried out in accordance with the explosion protection marking and in accordance with the regulations governing the use of equipment in hazardous areas.
7. Marking
- the name of the manufacturer or its registered trademark;
- symbol;
- certificate number;
- Ex marking: 1Ex d IIB Gb / 1Ex e IIB Gb or 0Ex ia IIC Ga or 1Ex tb IIIC Db according to GOST 31610.0 - 2014 (IEC 60079 - 0: 2011) and ambient temperature range - 60 ° С≤ta≤ + 90 ° C;
- the degree of protection provided by the IP66 / IP68 shell in accordance with GOST 14254 - 2015;
- special sign of explosion safety;
- sign of product circulation on the market of the Customs Union
8. Maintenance
8.1. During operation, the bushings do not require maintenance and are not repairable products.
8.2. Do not operate the cable gland with damaged parts or other malfunctions.
Appendix A
1 - bushing body, 2 - cable sealing ring, 3 - washer, 4 - pressure sleeve, 5 - nut.
| SYMBOL | THREAD, DXP, L | TURNKEY SIZE S, MM | PASSAGE CABLE Ø, MM | DIMENSIONS, MM | WEIGHT, NO MORE, KG |
|---|---|---|---|---|---|
| MKV G1 / 2K | G1 / 2, 20mm | 27 | 6 - 12 | 31x72 | 0.2 |
| MKB M20K | М20х1.5,20mm | 31x72 | 0.2 | ||
| MKB G3 / 4K | G3 / 4, 25mm | 36 | 10 - 16 | 41x96 | 0.4 |
| MKB M25K | М25х1.5.25mm | 41x96 | 0.4 | ||
| MKV M32K | М32х1.5,30mm | 50 | 16 - 26 | 55x112 | 0.6 |
| MKV M40K | М40х1.5,30mm | 22 - 30 | 55x112 | 0.7 | |
| MKV M50K | М50х1.5,30mm | 65 | 30 - 42 | 75x120 | 1 |
1 - bushing body, 2 - cable sealing ring, 3 - washer, 4 - lock nut, 5 - fitting.
| A TYPE | SYMBOL | THREAD, DXP, L | TURNKEY SIZE S, MM | PASSAGE CABLE Ø, MM | DIMENSIONS, MM | WEIGHT, NO MORE, KG |
|---|---|---|---|---|---|---|
| Труба с резьбой G1/2 | МКВ G1/2Т1/2 | G1/2, 20мм | 27 | 6 - 12 | 31х113 | 0.4 |
| МКВ M20Т1/2 | М20х1.5,20мм | 31х113 | 0.4 | |||
| Труба с резьбой G3/4 | МКВ G1/2Т3/4 | G1/2, 20мм | 31х113 | 0.4 | ||
| МКВ M20Т3/4 | М20х1.5,20мм | 31х113 | 0.4 | |||
| МКВ G3/4Т3/4 | G3/4, 25мм | 36 | 10 - 16 | 41х120 | 0.55 | |
| МКВ M25Т3/4 | М25х1.5,25мм | 41х120 | 0.55 | |||
| Труба с резьбой G1 | МКВ M32Т1 | М32х1.5,30мм | 50 | 16 - 26 | 55х135 | 0.75 |
| Труба с резьбой G1¼ | МКВ M40Т5/4 | М40х1.5,30мм | 22 - 30 | 55х138 | 0.8 | |
| Труба с резьбой G1½ | МКВ M50Т3/2 | М50х1.5,30мм | 65 | 30 - 42 | 75х142 | 1.2 |
1 - корпус ввода, 2 - кольцо уплотнительное кабеля, 3 - конус, 4 — штуцер, 5 - шайба, 6 - гайка.
| ТИП | УСЛОВНОЕ ОБОЗНАЧЕНИЕ | РЕЗЬБА, DXP, L | РАЗМЕР ПОД КЛЮЧ S, ММ | ПРОХОДНОЙ Ø КАБЕЛЯ, ММ | ГАБАРИТЫ, ММ |
|---|---|---|---|---|---|
| Металлорукав РЗЦ 10 мм | МКВ G1/2КМ10 | G1/2, 20мм | 27 | 6 - 8 | 31х82 |
| МКВ M20КМ10 | М20х1.5,20мм | 31х82 | |||
| Металлорукав РЗЦ 12мм | МКВ G1/2КМ12 | G1/2, 20мм | 6 - 10 | 31х87 | |
| МКВ M20КМ12 | М20х1.5,20мм | 31х87 | |||
| Металлорукав РЗЦ 15мм | МКВ G1/2КМ15 | G1/2, 20мм | 6 - 12 | 31х87 | |
| МКВ M20КМ15 | М20х1.5,20мм | 31х87 | |||
| Металлорукав РЗЦ 20мм | МКВ G3/4КМ20 | G3/4, 25мм | 36 | 10 - 16 | 41х100 |
| МКВ M25КМ20 | М25х1.5,25мм | 41х100 | |||
| Металлорукав РЗЦ 25мм | МКВ G3/4КМ25 | G3/4, 25мм | 36 и 41 | 10 - 16 | 41х100 |
| МКВ M25КМ25 | М25х1.5,25мм | 41х100 | |||
| МКВ M32КМ25 | М32х1.5,30мм | 50 | 16 - 22 | 55х112 | |
| Металлорукав РЗЦ 32мм | МКВ M32КМ32 | М32х1.5,30мм | 16 - 26 | 55х112 | |
| МКВ M40КМ32 | М40х1.5,30мм | 22 - 26 | 55x115 | ||
| Metal hose RZTs 38mm | MKV M50KM38 | М50х1.5,30mm | 65 | 30 - 32 | 75x118 |
1 - bushing body, 2 - cable sealing ring, 3 - cone, 4 - pressure sleeve, 5 - washer, 6 - nut.
| SYMBOL | M, MM | LM, MM | TURNKEY SIZE S, MM | PASSAGE CABLE Ø, MM | OUTER CABLE Ø, DMAX, MM | DIMENSIONS, MM | WEIGHT, NO MORE, KG |
|---|---|---|---|---|---|---|---|
| MKV G1 / 2V | G1 / 2 | 20 | 27 | 6 - 12 | eighteen | 31x72 | 0.2 |
| MKV M20V | М20х1.5 | 20 | 31x72 | 0.2 | |||
| MKV G3 / 4V | G3 / 4 | 25 | 36 | 10 - 16 | 25 | 41x96 | 0.4 |
| MKV M25V | М25х1.5 | 25 | 41x96 | 0.4 | |||
| MKV M32V | М32х1.5 | thirty | 50 | 16 - 26 | 38 | 55x112 | 0.6 |
| MKV M40V | М40х1.5 | thirty | 22 - 26, 26 - 30 | 44 | 55x112 | 0.7 | |
| MKV M50V | М50х1.5 | thirty | 65 | 30 - 36, 36 - 42 | 54 | 75x120 | 1 |
1 - bushing body, 2 - cable sealing ring, 3 - cone, 4 - pressure sleeve, 5 - washer, 6 - nut, 7 - cable sealing ring, 8 - washer, 9 - pressure nut.
| SYMBOL | M, MM | LM, MM | TURNKEY SIZE S, MM | PASSAGE CABLE Ø, MM | OUTER CABLE Ø, DMAX, MM | DIMENSIONS, MM | WEIGHT, NO MORE, KG |
|---|---|---|---|---|---|---|---|
| MKV G1 / 2V2 | G1 / 2 | 20 | 27 | 6 - 10, 10 - 12 | eighteen | 31x96 | 0.25 |
| MKV M20V2 | М20х1.5 | 20 | 31x96 | 0.25 | |||
| MKV G3 / 4V2 | G3 / 4 | 25 | 36 | 10 - 12.5; 12.5 - 16 | 25 | 41x111 | 0.45 |
| MKV M25V2 | М25х1.5 | 25 | 41x111 | 0.45 | |||
| MKV M32V2 | М32х1.5 | thirty | 50 | 16 - 22; 22 - 26 | 38 | 55x126 | 0.7 |
| MKV M40V2 | М32х1.5 | thirty | 22 - 26, 26 - 30 | 44 | 55x128 | 0.8 | |
| MKV M50V2 | М40х1.5 | thirty | 65 | 30 - 36, 36 - 42 | 54 | 75x135 | 1.1 |
