TJB COUPLERS

8 PITCH COUPLERS

TJB Supplies three methods of mechanical connection for high-voltage cable couplers. The oldest method is the 8 pitch thread. This closure incorporates AXI-NUT and BLUNT-START, RELIEVED-THREAD design, all 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

4 PITCH

A second type of closure supplied incorporates a 4 pitch acme, DOUBLE-START thread, again with "BLUNT-START" and "RELIEVED THREAD" features.

This design also includes the same AXI-NUT action found on our 8-pitch coupler,
making the coupling action more rapid then other brands.

NO THREAD

The third and BEST type of closure utilizes a pin-and-slot design which requires only a 90 degree movement of the nut to lock, close and compress the "0" 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

HIGH VOLTAGE DESIGN FEATURES

3 END-BELL SIZES,
eases tight fits,

Where larger, stiffer cables are involved,
TJB offers a choice of longer, larger-entrance end-bells. Two sizes are available that can accommodate cable sizes through 4 1/4" O.D., with clamps to fit cables 1 1/4"- 4 1/4" O.D.

TEFLON OR HARD    EP INSULATORS...
to meet industry needs,

TJB couplers offer a choice of a semi-rigid
    EP (Ethylene Propylene) molded insulator
    or a Teflon insulator introduced by TJB in
    1994 which has rapidly become the industry
    standard.

8 TIMES THE CREEPAGE
    PATH TO GROUND

Creepage path between ground and ground check with most couplers is as small as    1/8", a distance easily bridged in damp, dirty locations, resulting in short    circuiting the desired continuity check through the cable. TJB insulators have 8 times the    creepage path from ground check to ground of other couplers.

            CLICK IMAGE TO ENLARGE
            TJB                  OTHER

STAINLESS STEEL THREAD
reduces galling,

Galling or "Lock-up" of aluminum-to-aluminum threads which can occur after surface film, dry lubricant or anodizing wear off, is prevented by this original TJB design feature. A stainless steel insert in the TJB locking nut produces a connection which is non-corrosive and less subject to dirt accumulation, eliminating problems from aluminum-to-aluminum contact.

GEAR MOUNTED SOCKET

GEAR MOUNTED PLUG

ASSEMBLED COUPLER

SQUARE PLUGS BURNING UP?

TJB HAS THE            SOLUTION!!
            Our new line of quarter turn couplers has been tested at 800 amps            continuous duty and are GUARANTEED to solve your contact            burning problems. If you ever have contact burning problems with one            of our new couplers, we will replace it with a new one. That is how            sure we are that TJB couplers are capable of handling your loads.

            As our salespeople traveled around coalfields they heard the same            complaints about square plugs-broken housings and burned contacts

            Having thirty years of coupler designing experience behind us, we            have developed a replacement that will bolt right into your existing            power center panel and eliminate your coupler headaches once and for            all.

            Similar in design to our 15KV No-Thread (Quarter Turn), this smaller            coupler utilizes the same Teflon tubes that have so dramatically            reduced coupler failures in our high voltage line. Please order using the following numbers:

480V 700 AMP:

SFG48-Socket, Female Contacts, Gear Mounted
PML48-Plug, Male Contacts, Line (Cable) Mounted
SFL48-Socket, Female Contacts, Line (Cable) Mounted

	1KV 700 AMP: SFG1-Socket, Female Contacts, Gear Mounted PML1-Plug, Male Contacts, Line (Cable) Mounted SFL1-Socket, Female Contacts, Line (Cable) Mounted
	3KV 700 AMP: SFG3-Socket, Female Contacts, Gear Mounted PML3-Plug, Male Contacts, Line (Cable) Mounted SFL1-Socket, Female Contacts, Line (Cable) Mounted
	5KV 700 AMP: SFG5-Socket, Female Contacts, Gear Mounted PML5-Plug, Male Contacts, Line (Cable) Mounted SFL5-Socket, Female Contacts, Line (Cable) Mounted

CLOSES/OPENS IN 90 DEGREE ROTATION

EXPLOSION PROOF

MEETS MSHA AND IEEE TEST STANDARDS

The concept of replacing cables and cable couplers on high-voltage equipment has been recognized as practical for many years. Now, with increased emphasis being placed on limiting the number and frequency of splices made in trailing cables, the use of permissible couplers and replaceable medium-voltage cables is gaining increasing acceptance.

TJB Trailing Cable Connectors are designed to expedite cable changes and minimize downtime. Heavy-duty aluminum housings enclose impact-resistant insulators which support pin-and-socket type contacts. Contacts attach to conductors by set screws, or by soldering. TJB Connectors carry X/P-1944 MSHA Certification and are constructed in accordance with Pennsylvania requirements.

DESIGN FEATURES

TJB COUPLERS

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