HVTest HTJS-M, Руководство пользователя

Страница: 13 / 23

2.6 GST, internal reference capacitor, external HV:
Core
l
External HV (max 10kV)
HV shell Shell
HV XC
GST I-CN
5-Hz E-UN
GND
2.7 UST, external reference capacitor, external HV( HV dielectric loss)
Increase external HV as per Cx/C\n voltage level
HV
Shell
Core
l
Shell
UST E-CN
GND
Core
l
5-Hz E-
UN
2.8 GST, external reference capacitor, external HV:
HVshel
l
Core
l
Shell
External HV (max
10kV)
HV
XC
GST E-CN
Shell
Core
l
5-Hz E-
UN
GND
2.9 CVT self-exciting measurement
Wiring of CVT self-exciting measurement is as per the following diagram.
If C
1
is single-section capacitor, the bus should not be grounded. If C
1
is
multiple-section capacitor, it can be grounded. C
11
and C
12
can adopt
conventional UST and GST measurements, but for C
13
for C
2
, self-exciting
measurement is advisable.
13