8 Pitch – Fast coupling
4 Pitch – Faster coupling
No Thread – Fastest coupling
Cavotec Connectors supplies three methods of mechanical connection for high-voltage cable couplers.
A second type of closure supplied incorporates a 4-pitch acme, double- start thread, again with "blunt-start"
The oldest method is the 8 pitch thread. This closure incorporates axi-nut
and "relieved-thread" features. This design also includes the same
action and blunt-start, relieved-thread design, all of which contribute to easier operation and longer life. The floating axi-nut allows the plug to be inserted into the socket, the nut more easily started, and secures the coupler by compressing the o-ring seal. The "blunt-start" and "relieved-thread" features aid in preventing "first-thread rollover", common in couplers not supplied with these features, which may result in jamming of the nut.
axi-nut action more rapid than other brands.
The third and best type of closure utilizes a pin-and-slot design which requires only a 90 movement of the nut to lock, close and compress the "O" ring seal. Detents prevent unintentional opening due to vibration. This design lends itself to easy conversion of existing 8 or 4 pitch threaded couplers to the no-thread concept. Such a conversion requires a minimum of time (less than an hour for a set of couplers) and is economical in conversion cost. Operating time (opening or closing) is measured in seconds, rather than the 5 to 15 minutes that may be required with other types of closures.
PC 8 – S S
04 – 070 T – 3A/4
VOLTAGE 8= 25kV
TYPE OF COUPLER
TYPE OF CLOSURE
S= Plug V= Socket T= Inverted Plug W= Inverted Socket R= Connector I= Flange mounted
S= Screw Ring 4” pitch T= Screw Ring 8” pitch B= Bayonet
04= 3 phases + Earth + 1 pilot
plug P= Inverted
025= 035= 050= 070= 095= 120= 150= 185= 240= 300=
TYPE OF INSULATOR
T= Teflon insulator S= Rubber insulator
1= Non Threaded contacts 1A= Setscrew Threaded Phase & Ground Contact 1B= 1-1/2” Backend on Phase Contacts for 500 MCM
Cable-Solder 1C= 1-1/2” Backend on Phase Contacts for 500 MCM
2A= 8kV Interlocking Cover 2B= 15kV Interlocking Cover 2C= 15kV Interlocking Cover with Teflon Cups
3= Kirklock Plain Push On Cover 3A= Kirklock Heavy-Duty O-Ring Sealed screw on Cover 3B= Padlock Device
4= 2 Ground Checks 4A= 3 Ground Checks 4B= 4 Ground Checks
5= Large Bell 3.01” Cable and Larger 5A= Large Bell 3.00” Cable and Smaller (For Phase
Crossing) 5B= Large Bell 3.01” and Larger with Extension 5C= Large Bell 3.00” and Smaller with Extension 5D=Gear Flange Extension 5E= Gear Flange Extension with One Piece Foot 5F= Plug Flange on Gear Mounted Socket
6= 4 Hole Foot 6A= Footless
7= Silseal Moisture Block in Rubber Tubed Female Insulator
8= Pipe Plugs in End Bell 8A= Fibre Optic Cable Exit Gland 8B= Split End Casting
9= HardAnodizeallSurfacesforAdditionalCorrosionProtection 9A= Hard Anodize all Surfaces and Epoxy Paint 9B= Coated with Everslick 1201