TECO-RUPTOR VACUUM INTERRUPTER View Online Receiving & Storing Installation Operation Download File Download PDF File

These instructions do not purport to cover all details or variations in equipment, nor to provide for every possible contingency to be met in connection with installation, operation or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser's purposes, the matter should be referred direct to the Turner Electric, LLC factory at 1-618-397-1865.

RECEIVING AND STORING RECEIVING:

Customer should check material against packing list (attached to crate in waterproof package) upon receipt, to be sure all parts have been received. If crated switch box or vacuum interrupter box is damaged, material should be checked against Bill of Material for broken or missing components.

If possibility of damage exists, remove the interrupter and:

(A) Locate so that there is proper clearance from surrounding objects. Check for continuity when closed.
(B) Prop open interrupter unit with a piece of dry wood or fiberglass. Check that the contacts are open by listening for a "Pop" sound when the arm is moved to the open position.
(C) High potential testing, in addition to careful visual inspection, provides the best means of verifying the condition of the interrupter. (E) A high potential voltage (20KV) is to be connected across each open interrupter contact and the voltage slowly increased. A defective module will break down well below 20KV. (See Photo #1). If damage is found or suspected, file a claim as soon as possible (no longer than 15 days after receipt) with the delivery transportation company and notify your Turner Electric representative.

STORING:

Vacuum interrupters are fragile and must be handled with care. Live parts must not be subjected to rough handling.

INSTALLATION:

1.1 Unwire switch poles, and with rotating insulator, operate individually checking to be sure that each pole is in perfect adjustment. If not, Section 4 should be repeated.

1.2 Mount interrupter onto TECO-Rupter mounting bracket as shown in Photo #2.

1.3 Locate and secure pick-up hardware to its blade at hook radius dimension and attitude shown on applicable drawing and Photo #3.

1.4 It should be noted that the dimensions might vary slightly. Open the blade slowly, making sure that the pick-up hook on the blade engages interrupter arm while the auxiliary switch is still in contact. (See Photo #4).

1.5 Close each blade slowly, paying particular attention to be sure that the blade pick-up toggle assembly springs pass the interrupter actuator arm. (See Photo #5.)

OPERATION:

OPENING:

2.0 The TECO-Rupter and vertical break switch work in unison. With the switch closed, the vacuum interrupter is not in the circuit. All vacuum contacts are closed. The mechanism is loaded during the previous opening cycle. (See Figure #1.)

2.1 As switch begins to open, the auxiliary switch (arcing horn) provides a circuit path until the pick-up hook on the switch blade engages the TECO-Rupter interrupter arm. (See Figure #2.) For a short time, a parallel circuit exists between the auxiliary switch and the interrupter arm.

2.2 As the switch blade continues to open, adequate "strike" distance is created between the jaw contacts and the blade contacts to prevent restriking. The primary circuit is now through the interrupter arm on the vacuum interrupter. (See Figure #3.)

A) When the blade pick-up hook reaches the indicated red zone (see Photo #6) on the interrupter arm, a linkage mechanism in the vacuum head assembly is forced over toggle. This releases the mechanism holding the vacuum contacts closed, opening the circuit.

B) Open circuit indication is a loud "pop" sound, caused by the vacuum contacts opening. The circuit is extinguished in the vacuum, with no external arcing. Continued travel within the red zone is over-travel that has been programmed.

2.3 The vacuum interrupter arm will drop back to its "at rest" position, cocking the mechanism in the process. The switch blade continues to its full open position. (See Figure #4.) Vacuum contacts are held in the closed position, allowing the bellows in the interrupter to relax. Full rated basic impulse (BIL) is established above switch open gap.

CLOSING:

2.4 When closed, the auxiliary switch (arcing horn) establishes the circuit first so no arcing occurs between the blade mounted pick-up hook and the vacuum interrupter arm. (See Figure #5.)

2.5 With the switch blade completely closed, the vacuum interrupter is not in the circuit. All vacuum contacts are closed, and the mechanism is cocked and loaded, ready for the next operation. (See Figure #6.)