Справочник Пользователя для Toshiba VF010H05

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JKSSS+ Series - 93
JKSSS+ Series   
 
 
 
 
           
            
   2.3 - 4.2KV
Reinstallation:
1.  Hold the rebuilt or new stack assembly in the vertical position with 
the Temp/CT board on top (only the top stack assembly will have this 
board in a multi-stack phase) and place the stack on the positioning 
studs that protrude from the isolation standoffs.
2.  While pressing on the stack to hold it on the positioning studs, place 
the feed-through bolt through the heat sink and finger-tighten the top 
bolt. Then repeat the process with the bottom feed-through bolt to 
ensure the stack is held against the isolation standoffs.
3.  After verifying no wires or fibers have been pinched between the stack 
assembly and isolation standoffs, tighten the top bolt completely, then 
repeat the process for the bottom bolt. Now the stack assembly should 
be held firmly in place.
4.  Using the 9/16” wrench reinstall the line and load power cables and 
tighten.
5.  If needed, refer to the appropriate drawing to reconnect red transformer 
wires on each gate drive board. As an example, for the 4160V stack, 
reattach TB4-1 to X3, TB4-3 to X4, TB1-3 to X2 and TB1-1 to X1. Verify 
all X(#) wires are reconnected to their original position on the gate drive 
boards. Otherwise the SCRs will misfire.
6.  Reconnect thermostat wires on TB1 positions 2 and 3 of the Temp/CT 
board.
7.  Reconnect the main CT black wire to TB1-1. Then feed the white wire 
through the board mounted CT and connect to TB1-1 on the Temp/
CT board. Please note that one each of the thick white wires from the 
encapsulated CT must be connected with the Main CTs wiring.
8.  Ensure the same fiber optic routing is used as before. If the fiber optic 
wiring is positioned close to a heat source, (such as the 25-watt resis-
tors on the gate drive board) melting or distortion of the plastic fiber 
may occur. Minimum distance is a ½ inch with a minimum bend radius 
of 2 inches. All gate drive boards require 2 single connectors per board 
and the Temp/CT connector is a duplex piece with a mating tab that 
faces away from the stack. If the tab is broken off, refer to an adjacent 
stack’s labels to see how the labels should be positioned when install-
ing a duplex connector with a broken tab. Again, caution should be 
taken not to touch the fiber connector end or force it in with the tab 
facing down.