Available in two sizes, this tool provides a temporary means of connecting and disconnecting equipment or circuits under load conditions. This tool design does not have a fuse and does not provide protection for fault or overcurrent conditions. Insulated bushing and hot parts are from Chance Type C-Polymer cutouts, including the tubular-copper disconnect blade.
An arc-chute-type interrupter gives the tool its excellent loadbreak capability. To interrupt load currents, the device makes use of a stainless-steel auxiliary blade within a Delrin® arc chute.
The tool simply clamps onto primary conductor with a Grip- All clampstick. Bronze stud at lower end accepts clamp on temporary tap jumper.
This self-contained loadbreak device operates by a simple disconnect stick. No special or portable tools are required to operate the unit.
To break the current, just insert a disconnect stick into the operating ring and rapidly open the device. In the process of opening, the spring-loaded auxiliary blade snaps out through the arc chute to elongate, cool and extinguish the confined arc. This loadbreaking operation is independent of the disconnect stick speed.
To provide a clearly visible break, the disconnect blade hangs in approximately a vertical position.
Unfused or unswitched loads can be disconnected by first installing this tool and a temporary bypass jumper in parallel with the permanent tap connection. After closing the blade of the tool, the permanent tap can be disconnected. The load can then be dropped or reconnected by operating the blade of the tool. It should never be closed into a fault or opened during a fault.
To install the tool, first remove its main blade. Then secure both clamps of a suitable temporary jumper onto the tap stud of the tool's lower hinge.
Use a Grip-All clampstick to install the tool onto the main line conductor. Use the clampstick to secure one of the jumper clamps onto the line with the load to be picked up.
Use a disconnect stick to place the blade in the lower hinge of the tool. Use the disconnect stick in the operating ring to close the blade according to safe work procedures. Take care when removing the disconnect stick to avoid opening the blade.
The equipment or circuit is now energized through the tool. Before removing the tool, first make up a permanent connection so there are two energizing paths.
Use a disconnect stick in the operating ring to open the blade according to safe work procedures and to remove the blade from the lower hinge of the tool. Use a clampstick to take the jumper clamp from the conductor and secure it on the tool stud. Then use the clampstick to remove the tool from the main line conductor.
|Specifications (both models)|
|Max. loadbreak current:||300 amps|
|Max. momentary rating:||†12,000 asym amps|
|†This is a pass-through fault-current rating only. The tool should never be opened or closed when the current exceeds the maximum continuous load current of 300 amps.|
|Main line range (both models)|
|Minimum:||#6 solid copper (0.162" dia.)|
|Maximum:||1033 kcmil ACSR (1.25" dia.)|
|Tap stud:||1/2" diameter|
|Catalog No.||REPLACES Cat. No.||Description||Disconnect Blade||Arc-Chute Assy.|
|PSC6010347||C6002386||*8.3/15kV Temporary Load Disconnect Tool||T730133T||T7300080|
|PSC6010348||C6002387||*15/27kV Temporary Load Disconnect Tool||T730233T|