S&C 2020 User Manual

S&C Instruction Sheet 716-504 35
Operation
Figure 42. Close-up view of position indicator DISCHARGED
and CHARGED.
If the position-indicating lamp option has been
specified, the red lamp will light.
The circuit-switcher may also be electrically
operated via remotely located control switches.
No instructions are included for remote control
because control schemes vary with the instal-
lation and specific application of the switch.
The total closing time for the circuit
is 6 cycles.
Manual Operation
To open, push the manual trip lever
counterclockwise.
The opening latch in the stored-mechanism
will release, discharging the opening spring.
See Figure 30 on page 26. This action opens
the interrupters and forces the opening and
closing pistons in the mechanism down. The
stored-energy mechanism indicator will show
DISCHARGED in the window and the switch-
position indicator on the high-speed base will
move to the Open position. See Figure 41 on
page 34 and Figure 42. If the position-indicating
lamp option has been specified—and operator
control voltage is available—the green lamp
will light.
If operator control voltage is available:
The motor-driven cam in the stored-energy
mechanism will start rising, charging both the
opening and closing springs. When the open-
ing spring latches, the indicator on the stored-
energy mechanism will move to the CHARGED
window. Simultaneously, the take-off shaft at
the rear of the operator housing will turn to
drive the interphase pipe assembly, opening the
disconnect. At the end of the charging opera-
tion, the motor return indicator will reappear
in the viewing window.
If operator control voltage is not avail-
able: The opening and closing springs can
be charged and the disconnect opened using
the manual charging handle. See Figure43 on
page 36.
To manually open the disconnect:
(a) Open the access shutter and place the
manual charging handle on the manual
operating shaft.
(b) Rotate the shaft, clockwise only, until
the disconnect opens fully and the
mechanism reaches its open stop.
(c) Remove the manual charging handle
from the manual operating shaft and
replace it in the holder on the inside of
the operator door.
Stored
energy
indicator

S&C 2020 Specifications

General

Brand	S&C
Model	2020
Category	Switch
Language	English