GENERAL DESCRIPTION
Page 7
COMPONENTS
The Toshiba HCV-7HA and HCV-7HAL vacuum
contactors described in this manual are suitable for
use on systems of 7.2kV – 400A – 7.2kA.
Arc interruption is accomplished inside sealed
vacuum interrupters mounted on track-resistant
insulators. Vacuum interrupters use low-surge contact
materials, which exhibit low current chopping levels
reducing switching over-voltage.
INDICATORS PROVIDED
On-Off Indicator – Located on the front, right side of
the contactor. Indicates if the contactor is OFF
(Green) or ON (Red). When the indicator reads OFF,
the main contacts of the contactor are open. When
the indication is ON, the main contacts are closed.
Front view
Back view
Front view – Latched type
1) Insulating frame
2) Vacuum bottle
3) Insulating flange
4) Auxiliary switch
5) Drive unit
6) Armature
7) Stopper
8) On-Off indicator
9)
Stationary contact main terminal
10)
Moving contact main terminal
11)
Rotating shaft
12)
Closing coils
1.
13)
Latch mechanism
14) Latch trip lever
Figure 1 – Contactor Structure
9
2
3
6
4
7
5
1
8
13
14
10
11
12
