Siemens 9330 User Manual
9300 Series User’s Guide
Residual Current Calculation (I4)
Chapter 5 - Features and Applications
Page 131
Changing the Meter Password
1.
Select S
ECURITY
from the Setup menu.
2.
You will see that the screen displays 00000. Enter the current password. If you
have not previously changed your password, the default is 00000.
have not previously changed your password, the default is 00000.
3.
Choose M
ODIFY
P
ASSWORD
to alter your password (the F
ACTORY
U
SE
O
NLY
option is for factory purposes and is not accessible).
4.
Enter your new numeric password.
To change the value of the highlighted digit use the Up and Down arrow
buttons.
buttons.
To change the position of the cursor one space to the left, hold the Up arrow
button for about one second.
button for about one second.
To change the position of the cursor one space to the right, hold the Down
arrow button for about one second.
arrow button for about one second.
5.
Select Y
ES
to accept your new password. You will be returned to the Setup
menu.
Residual Current Calculation (I4)
The Power Meter module provides an output register labeled “I4” which holds the
residual current value, derived from the three phase current measurements. As
such, I4 represents the ground fault current, or the current flow in the neutral or
ground conductor.
residual current value, derived from the three phase current measurements. As
such, I4 represents the ground fault current, or the current flow in the neutral or
ground conductor.
This quantity is only available when the meter's Volts Mode is set to 4-W
IRE
W
YE
. If
the Power Meter module is set to any other Volts Mode, the I4 output will read N
OT
A
VAILABLE
.