|
5. Standard
Burdens for current transformers
Models
according to ANSI or IEC standards are available.
ANSI burdens
set includes those between B-01 and B-8 (from 2.5 VA up to 200 VA) with
nominal
current 5 A.
IEC burdens
set includes those from 1.25 VA up to 60 VA for 1 and 5 A
Limits of error: ± 3 %
(R, L) for load 5 … 120 % In
6.
Standard Voltage
Transformers Series NT
This NT Series covers primary
voltages from 120 V to 161 /
Ö3 kV
Accuracy is 100 ppm for all
units.
The units available are the following:
NT 1.2: Primary voltage
120 V … 1 200 V
NT 4.8: Primary voltage 2
400 V … 4 800 V
NT 24: Primary voltage
7.2 kV … 24 kV
NT 72: Primary voltage
36 /
Ö
3 kV … 72 /
Ö
3 kV
Other models up to 161 /
Ö
3 kV are available on request.
These primary voltage ranges, if
used together with the Voltage Transformer Comparator Model
CT3 allows to
calibrate any voltage transformer with primary voltage between 120 V and
72 /
Ö
3 kV.
7.
Standard Burdens for Voltage Transformers
Models according to ANSI or IEC standards are
available.
ANSI burdens
set includes types W – X – M – Y – Z for 120 – 120
Ö
3 V.
IEC burdens
set includes those from 1.25 VA up to 80 VA . The individual burdens
included can be
added by means of
switches to reach up to 200 VA
Limits of
error:
± 3 %
(R, L) for load 5 … 120 % Un
Rated
voltages: 120 and 120 /
Ö
3 V
|
