Overcurrent, 51 (time overcurrent), Overcurrent -9 – Basler Electric BE1-851 User Manual
Page 313: Figure 14-9. setting group selection screen -9, Figure 14-10. time overcurrent screen, 51 tab -9
Figure 14-9. Setting Group Selection Screen
Overcurrent
Pull down the Screens menu and select Overcurrent or click on the Overcurrent protection icon
that is shown at the right margin of this paragraph. This screen has three folder tabs (H style)
or six folder tabs (G style, 51, 151, 50T, 150T, 250T, 350T) and the first tab is 51.
51 (Time Overcurrent)
This tab allows you to enter the settings for the time overcurrent elements. BE1-851 relays have three
time overcurrent elements. The pull down Pickup menu (Figure 14-10) allows you to select the relative
pickup quantity. BE1-851 relays measure the current input in secondary amperes. You can also choose to
use primary amperes, per unit amperes or percent amperes.
Figure 14-10. Time Overcurrent Screen, 51 Tab
9289900990 Rev R
BE1-851 BESTCOMS™ Software
14-9