ABB CV-21 - Page 14

I.L. 41-201.2G
14
TYPE CV FREQUENCY
COMPENSATED VOLTAGE RELAY
Figure 11: Typical Time Curves of the Type CV-26 Long Time Over and Undervoltage Relay
Sub 2 406C883
11
10
9
8
7
6
5
4
3
2
1
1/2
seconds
Time Dial Setting
11
10
9
8
7
6
5
4
3
2
1
1/2
300
0
150
10 20 30 40
50
60 70 80
90
100
110 120
130 140
160 170 180 190 200 210 220 230 240 250 260 270 280 290
0 1
2
3
4
5 6
7 8 9
10
11
12 13 14
15
16
TYPICAL TIME CURVE
TYPE CV-7 OR CV-27
OVER & UNDER VOLTAGE RELAY
50/60 HERTZ
Percent Tap Value Voltage