Nipple-barrier series RKNN-ZK (NPS) with two threaded joints

Explosion-proof partition nipple-barriers are intended for the connection of flat or round electrical wires or optic cables between two enclosures of the explosion-proof equipment, usually between an Exd-enclosure and input Exe enclosure. Actual range of operating temperatures is determined by the applied type of the wires or a cable. More detailed information for certain types is provided upon request. Partition nipple-barriers could be manufactured with hook-up wires (conductor), with coaxial cables (coaxial), with optic cables (optic), with flat wires, with clamping screw (bolted) as per the order.

Upon customer‘s request, stranded gas migration preventing heat-resistant hook-up wires "ZAVOD GORELTEX" Co. Ltd. for partition fittings with completely encapsulated internal space.

Scope of application - underground mines and pits hazardous with gas (methane), coal dust; hazardous indoor and outdoor areas in accordance with explosion protection marking, GOST 30852.13-2002 (IEC 60079-14:1996) and areas hazardous with combustible dust ignition, as per GOST IEC 61241-3-2011, dangerous production facilities of I, II, III, IV hazard classes under supervision of Rostekhnadzor and national supervisory bodies of the CU and the CIS countries.

CERTIFICATES

Marking:

Ex db IIC Gb U
Ex tb IIIC Db U

Mining equipment marking:

Ex db I Mb U

Protection:

IP66
IK10

Certificates and permits:

ЕЭАС RU C-RU.AA87.B.00438/20

Maritime Register Type Approval Certificate №22.44.01.03371.120

TU 27.33.13-031-72453807-2017

GOST R ISO 9001-2015 (ISO 9001:2015)

TECHNICAL DATA

Ambient temperature, °С:

-75...+150

Thread:

Code N taper inch NPT
Code M metric GOST 24705
Code R taper pipe GOST 6211-81
Code G pipe cylindrical GOST 6357-81

Material:

Nickel-plated brass code NK
Galvanized steel code О
Stainless steel grade 08Х18Н10 as per GOST 5632-2014 (AISI 304) code N

Filling:

PG-COMPOUND

Climatic version:

NF1 (upon request NF2, NF3, NF4, NF5, F1, F2, F3, F5, T1, T2, T3, T5, MU1, MU2, MU3, MU4, W2.1, W5)

DIMENSIONS, OPTIONS, ACCESSORIES, ORDER CREATION

OVERALL AND MOUNTING DIMENSIONS

Type of fitting	Diameter, mm	H, mm	L, mm	H, mm	AС, mm	S, mm
RKNN-ZK	10	60	15	9	14	16,5
	12				16	19
	16				20	23,5
	24				28	32,5
	25				30	34,5
	33				36	42
	36				40	46,5
	38				42	48,5
	42				45	52

OPTIONS, ACCESSORIES AND VERSIONS

ORDER CREATION

Non-explosion-proof version

/PROM

Stainless steel grade 03Х17Н13М2 as per GOST 5632-2014 (316L)

/316L

Marine version

/MORE

Locknut (cylindrical and metric thread)

/KG

Anaerobic sealant PG-REZBA-G

/PG-REZBA-G

Version for tropics with protection against bugs

/TERMITY

FORMATION OF ORDER

RKNN-ZK	-	X		X	(	X	x	Х	)	Х	– TU 3400-007-72453807-07
											Type of the element
											Diameter
											Material
											Number of wires
											Cross-section of the wires
											Length of free wire ends, dm

EXAMPLE: RKNN-ZK-10O(3x2,5)2- TU 3400-007-72453807-07

Non-standard nipple-barriers can be produced as per customer‘s layout

CONFORMITY TO STANDARDS IN RUSSIA

GOST 30852.0-2002 (IEC 60079-0:1998), GOST 30852.1-2002 (IEC 60079-1:1998), GOST R 30852.20-2002, GOST 14254-96 (IEC 529-89), Ch. 7.3 PUE, Ch. 7.4 PUE, TR CU 012/2011