Cvr-1 Relay Control Adjustments; Test Rheostat - Westinghouse CVR-1 Instructions Manual

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(RELAY
Fig. Typical Damping Factors Versus Gap S etting and Magnet Engagement
9-
In Figure
f actor.
10
volt bandwidth the time delay would be 3
seconds for a 4 volt change.
To determine the actual time to close
relay contacts multiply 3 (seconds)
(damping factor) 6 seconds actual time
delay.

CVR-1 Relay Control Adjustments

Figure 11 shows the CVR-1 Relay Control
Panel as seen facing the front of the relay
with the cover removed. The adjustments
for resistance and reactance compensation,
the switch for reversing the polarity of the
reactance compensation, and the Test Rheo­
stat are all contained on this sub-panel. A
- !--
5
4
3
-
0
8 6 5
32 NO'S INCH
TYPICAL GAP SETTING IN
WITH MAGNET IN EXTREME
OUTWARD POSITI O N
FIGURE 10 MULTIPLIED
T:ME Tl ME VALUE FROM
w e find that for a 2
2
x
- -- - r- ---
. r--- -- -
10 8 6 4
T YPICAL
MAGNET ENGAGEMEN T
SETTING IN 16TH'S INCH FROM
MAXIMUM ENGAGEMENT
¥32
WITH GAP SET AT
4 3
BY DAMPING FACTOR)
control breaker, potential and current test
terminals, and the selector switches for
automatic-manual
changer control are separately mounted on
the larger steel panel containing the CVR-1
relay. These have been touched briefly in
an earlier discussion but are not within the
scope of this instruction book.
1.

Test Rheostat.

the CVR-1 sub-panel facilitates checking
and setting the relay voltage sensing ele­
ment, as described earlier under two dif­
ferent methods of setting. Under actual con­
ditions of operation it is left in the "OFF"
position, in which there is zero resistance
between the potential supply source and the
CVR-1 voltage sensing element.
Page 13
2
0
SETTING
INCH
a n d raise-lower tap
The Test Rheostat on