Omicron CPC 100 Reference Manual

CPC 100 V1.41
4 - 40
Pressing the S
ETTINGS menu key opens the Settings page. The Settings
page allows setting the test cards individually. As a rule, do not use the Settings
page but the Device Setup tab in the Options view (see ”Device Setup” on
page 2-33) to set the test cards. For more information, see ”Settings Page” on
page 2-28.
Measurements
Selecting the check box "Manual input" lets you enter the value for Vsec
manually, for example, when Vsec was measured with an external volt meter
rather than at input V2AC.
Iprim:
(lower field)
actual output current at the output that is injected into the
Rogowski coil’s current-carrying conductor
Vsec: secondary voltage measured at V2AC
I’sec:
calculated secondary current. I’sec =
with k = Iprim
nom
/ (Vsec
nom
x 1s).
Note that the current I’sec does not really exist in the system. It
is a calculated current only.
° phase angle of calculated secondary current with reference to
the primary current
Ratio:
Iprim / I’sec, here 240.0:239.97
1
1. The value 239.97 is calculated as follows:
(I’sec / Iprim) x Iprim
nom
; here: (239.84A / 239.87A) x 240 A = 239.97A
% and deviation of current ratio in %. Formula:
((I’sec - Iprim) / Iprim) x 100%
((239.84A - 239.87A) / 239.87A) x 100% = -0.012%
Polarity: displays the status of the polarity
OK = phaseI’sec - phaseIprim = -45° < 0° < 45°
NOT OK = all other cases
kV tdsec
∫

Omicron CPC 100 Specifications

General

Brand	Omicron
Model	CPC 100
Category	Test Equipment
Language	English