777 Series Insulated Adaptors

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Insulated Adaptor Type 777 with Flameproof Ex d IIC & Increased Safety Ex e II forms of protection.



The CMP Type 777 Insulated Adaptor allows the Metallic Cable Gland, and ultimately the cable armour, to be effectively isolated from the equipment. The use of these Adaptors has proven to be an essential precaution in areas where electromagnetic ‘noise’ and circulating eddy currents 'stray' around any vulnerable cable system. Particularly relevant in Power Plants and in areas where highly sensitive instrumentation circuits are relied upon for interference free safety critical operations, the cable armour can still be connected to ground externally with the use of an earth tag fitted between the cable gland and insulated adaptor. This allows the user to design his system around a single point earthing strategy and allows the operator to perform tests on the earth circuit without disconnection of the elements installed. A General Purpose Industrial version is also available.

CMP 777 Insulated Adaptors are available in Brass, Aluminium or Stainless Steel and can be supplied for both Industrial and Hazardous Area applications, with Ex ‘d’ & Ex 'e' Component Approval.

777 Series Insulated Adaptors Table

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Ordering Reference Male Thread Size Minimum Thread Length Female Thread Size Maximum Bore Diameter Protrusion Length Overall Envelope Diameter
777DM2M2 M20 X 1.5 15.0 M20 X 1.5 14.0 31.4 38.9
777DM3M3 M25 X 1.5 15.0 M25 X 1.5 20.0 31.9 49.7
777DM4M4 M32 X 1.5 15.0 M32 X 1.5 26.0 31.4 59.4
777DM5M5 M40 X 1.5 15.0 M40 X 1.5 32.1 32.4 75.6
777DM6M6 M50 X 1.5 15.0 M50 X 1.5 42.0 32.2 86.4
777DM7M7 M63 X 1.5 15.0 M63 X 1.5 55.0 37.9 108.0
777DM8M8 M75 X 1.5 15.0 M75 X 1.5 65.2 37.2 115.6
777DM9M9 M90 X 2.0 24.0 M90 X 2.0 80.6 52.4 133.1
Dimensions are displayed in millimetres unless otherwise stated

Note: Marked with ATEX, IECEx and cCSAus certification details as standard. Other Thread Variations are available on request. Please refer to ordering guide tables in Ordering Definitions.

Note: How to order - e.g. 777DM24 = Dual Certified Ex d & Ex e - M20 - Stainless Steel

For Integral Entry Thread "O" Ring Seal option please use the letter "R" after the form of protection in the Ordering Reference list above.

Ordering Reference Male Thread Size Minimum Thread Length Female Thread Size Maximum Bore Diameter Protrusion Length Overall Envelope Diameter
777DM2M2 M20 X 0.059 0.591 M20 X 0.059 0.551 1.236 1.531
777DM3M3 M25 X 0.059 0.591 M25 X 0.059 0.787 1.256 1.957
777DM4M4 M32 X 0.059 0.591 M32 X 0.059 1.024 1.236 2.339
777DM5M5 M40 X 0.059 0.591 M40 X 0.059 1.264 1.276 2.976
777DM6M6 M50 X 0.059 0.591 M50 X 0.059 1.654 1.268 3.402
777DM7M7 M63 X 0.059 0.591 M63 X 0.059 2.165 1.492 4.252
777DM8M8 M75 X 0.059 0.591 M75 X 0.059 2.567 1.465 4.551
777DM9M9 M90 X 0.079 0.945 M90 X 0.079 3.173 2.063 5.240
Dimensions are displayed in inches unless otherwise stated

Note: Marked with ATEX, IECEx and cCSAus certification details as standard. Other Thread Variations are available on request. Please refer to ordering guide tables in Ordering Definitions.

Note: How to order - e.g. 777DM24 = Dual Certified Ex d & Ex e - M20 - Stainless Steel

For Integral Entry Thread "O" Ring Seal option please use the letter "R" after the form of protection in the Ordering Reference list above.

TECHNICAL DATA
Please click a logo to display it's certification information
cCSAus Approval Certificate No. 1055233
cCSAus Code of Protection Category Ex de II; Class I, Groups A, B, C and D; Class I, Zone 1, AEx de II; IP66, 67, and 68, Enclosure Type 4X.
cCSAus Compliance Standards C22.2 No. 0.5-M1982, C22.2 No. 30-M1986, C22.2 No. 94-M1991,CAN/CSA E60079-0:07, CAN/CSA E60079-1:07,CAN/CSA E60079-7:02, UL Standard 50, Eleventh Edition, UL Standard 1203, Fourth Edition, UL 60079-0, Fourth Edition, UL 60079-1, Fifth Edition, UL 60079-7, First Edition
GOST R Certificate Number POCC GB.HO06.B00207
GOST R Code of Protection Category Ex d IIC / Ex e II / DIP A21
GOST R Compliance Standards ГOCT P 52350.0-2005, ГOCT P 52350.1-2005,
ГOCT P 52350.7-2005, ГOCT MЭK 61241-1-1-99
GOST GGTN Permit PPC 00-40706
GOST K Certificate Number KZ 75000361 01 01 14761
RoK Permit For Use Number 19-02-UL-1957
Lloyds Approval No. 01/00173
DNV Approval No. E-10496
ABS Approval No. 01-LD234401C/1-PDA
INMETRO Approval Certificate Number. TUV 12.1331 U
INMETRO Code of Protection Category BR-Ex d IIC / BR-Ex e II
INMETRO Compliance Standards ABNT NBR IEC 60079-0:2006, IEC 60079-1:2007 e IEC 60079-2007:2001
RETIE Approval Number 03866
Type 777
Design Specification BS 6121:Part 1:1989, EN 50262:1999
ATEX Certification Detail SIRA10ATEX1057U
ATEX Code of Protection Category ATEX ATEX Approved II 2 GD Ex d IIC & Ex e II Component, Zone 1, Zone 2, Zone 21, & Zone 22 - Gas Groups IIA, IIB, IIC
ATEX Compliance Standards EN 60079-0, EN 60079-1, EN 60079-7, EN 50281-1-1
IEC Ex Certification Detail IECEx SIR 10.0027U
IEC Ex Code of Protection Category Ex d IIC, Ex e II, Ex tD A21 IP6
IEC Ex Compliance Standards IEC 60079-0, IEC 60079-1, IEC 60079-7, IEC 61241-0, IEC 61241-1
Continuous Operating Temperature -60°C to +130°C
Ingress Protection Rating IP68
Material Brass, Electroless Nickel Plated Brass, Aluminium,
Stainless Steel
Accessories Included Integral Entry Thread "O" Ring Seal
Optional Accessories Locknut, Serrated Washer

Additional information

CMP WP 777_0311