 |
Operating
voltage range is ¡¾10% of rated voltage. |
|
For other voltage and/or current ratings
higher then listed on the specification,
use |
| |
external
C.T and/or external P.T with a 110V/5A instrument,
when ordering, specofy
the full scale value desired, P.T ratio
and C.T ratio. |
|
Rating voltage
of 3phase 3wire is at phase voltage..(/¡î3) |
|
The full scale
of varmeter is generally 1/2, 1/3, or 1/4
of load capaciry. |
|
When using P.T and C.T, Calibrating vars
will be as follows |
| |
Calibrating var =  |
| |
Namely 1 ) The standard calibration var
of the meter for single phase 2wire |
| |
: 300Var (0.3Kvar)
|
| |
2 ) Single phase
3wire : 500Var (0.5Kvar) |
| |
3 ) 3phase 3wire
: 500Var (0.5Kvar) |
| |
4 ) 3pgase 4wire
: 833Var (0.833Kvar) |
| |
The other 1) In case of 22900V |
| |
- Calibrating
var of 3phase 3wire : 480 Var |
| |
- Calibrating
var of 3phase 4wire : 833 Var |
| |
The other 2 ) In case of 380V |
| |
-
3phase 3wire use to potential transformer
ratio 380V/110V : 579Var |
| |
- not use to
potential transformer : 2.0Kvar |
| |
- 3phase 4wire
use to potential transformer ratio  V
/  V
: 1.0Kvar |
| |
The other 3) In case of  V |
| |
- no use to
potential transformer at 3phase 4wire :
1.0kvar |
|
The standard scale is LGA. |
|
The varmeter with "0" point
at center is recomended, if it is used instead
of a power |
| |
factor meter.
In case of using the varmeter as a power
factor meterm it is recommended,
to use a left side and of "0"
point at the center as Lead-O-LAG. |
| ¡Ø The instrument of D-V¡à¡à¡àT
Type is self contained with the Transducer
Box. |