ISA T 2000 - Page 58

DOC. MIE11110 Rev. 5
Page
58
of
110
. The primary voltage, in kV, either Line to Line or Line to neutral;
. The secondary voltage, in V, either Line to Line or Line to
neutral.
. The selected input measurement range. To this purpose,
consider that the maximum test voltage VT is 3000 V, and can be
much lower that the nominal primary voltage, VPN. Prior to select
the input measurement range, compute the nominal measurement
voltage VM as follows:
VM = VT * VSN / VPN
Giving some figures, if the primary voltage is 30 kV or more, LL,
and the secondary is 100 V or 110 V, LL, it is advisable to use the
10 V input, as it is more accurate than the 600 V input for low
voltages.
The connection diagram is the following.