![Telemark TT-6 Скачать руководство пользователя страница 13](http://html1.mh-extra.com/html/telemark/tt-6/tt-6_instruction-manual_1081923013.webp)
Te/emark TT-6 Power Supply
Figure 3-A
Vacuum
Tank
Grounding
Installation
See Fig. 3-A
6 Gauge Wire
(as short as possible)
3/ 4"x8'
Copper
Rod
Filament
Transformer
Ground
Vacuum Tank Ground
The vacuum tank and E-gun must be connected to a good earth ground. Under
normal conditions, a good earth ground will consist of two 3/4 inch (19mm)
diameter copper clad steel rods driven through the floor and into the earth near
the tank location.
The ground rods should be connected to the vacuum tank and the filament
transformer by a #6 AWG or larger gauge copper cable. If the distance from the
grounding rods to the tank is more than 10 feet (3 meters), but less than 20 feet,
(6 meters), increase the size of the copper cable to #4 AWG. For distances of 20
to 100 feet (6 to 30.5 meters), use 2 to 4 inch (50-101.6mm) by .035-.050 inch
(.089-1.27mm) copper strap. For distances over 100 feet (30.5 meters), use 4 to 6
inch (101.6-152.4mm) by .035-.050 inch (.089-1.27mm) copper strap.
Do not use
braided wire.
Be sure that the connection is made to clean metal. The rods must
be approximately 6 feet (1.8m) apart and the resistance between the rods (without
the cable connection) should be 3 ohms or less. The resistance of the soil can be
reduced by adding copper sulfate or salt water around the rods. A drip system
may be required to insure maintenance of a proper ground.
NOTE - BE SURE THAT THE POWER SUPPLY CANNOT BE
TURNED ON DURING THE FOLLOWING TEST.
3-2
INSTALLATION