System; Ct Ratio; Vt Ratio - CARLO GAVAZZI WM5-96 - PROGRAMMING Instruction Manual

WM5-96 Instruction Manual

System

* * * * * * * * * * M M A A I I N N M M E E N N U U * * * * * * * * * *
CHANGE PASSWORD
MODULES
SYSTEM

CT RATIO

R R E E V V . . 1 1 . . 4 4 . . 2 2 . . 6 6
1
* * * * * * * * * * M M A A I I N N M M E E N N U U * * * * * * * * * *
CHANGE PASSWORD
1-PHASE 2-WIRE
MODULES
2-PHASE 3-WIRE
SYSTEMA
3-PH 3W+1CT BAL.
CT RATIO TA
R R E E V V . . 1 1 . . 4 4 . . 2 2 . . 6 6
3-PH 3W UNBAL
2
Confirm
CT ratio
* * * * * * M M A A I I N N M M E E N N U U * * * * * *
CHANGE PASSWORD
MODULES
SYSTEM
CT RATIO
R R E E V V . . 1 1 . . 4 4 . . 2 2 . . 6 6
1
* * * * * * M M A A I I N N M M E E N N U U * * * * * *
CHANGE PASSWORD
MODULES
RAPP. TA ?
SYSTEMA
min
a
CT RATIOORTO TA
R R E E V V . . 1 1 . . 4 4 . . 2 2 . . 6 6
max
2
Confirm

VT ratio

* * * * * * M M A A I I N N M M E E N N U U * * * * * *
MODULES
SYSTEM
CT RATIO
VT-PT RATIO
R R E E V V . . 1 1 . . 4 4 . . 2 2 . . 6 6
1
* * * * * * M M A A I I N N M M E E N N U U * * * * * *
MODULES
SYSTEM
VT RATIO ?
CT RATIO ORTO TA
min
a
VT-PT RATIOORTO TA
R R E E V V . . 1 1 . . 4 4 . . 2 2 . . 6 6
max
2
Confirm
Programming WM5 96
This function allows the user to select the type of electrical system
Measure
choosing among:
1- single phase 2 wires (1-PHASE 2-WIRE),
> 2s
2- dual phase 3 wires (2-PHASE 3-WIRE),
3- three phase 3 wires and 1 CT balanced load (3-PH 3W+1CT BAL.),
( ( A A V V 5 5 ) )
4- three phase 3 wires unbalanced load (3-PH 3W UNBAL.),
5- three phase 4 wires unbalanced load (3-PH 4W UNBAL.).
Choose by means of the "
Go back
the "S" key to confirm, then select by means of the "
desired system
> 2s
( ( A A V V 5 5 ) )
This function allows the user to select the value of the CT ratio (pri-
mary/secondary ratio of the current transformer being used). Example:
Measure
if the CT primary (current transformer) has a current of 300A and the
secondary a current of 5A, the CT ratio corresponds to 60 (obtained
> 2s
using the following calculation: 300/5). Choose the CT RATIO function
( ( A A V V 5 5 ) )
(1)
"S" key. Then select the desired value by means of the "
(2)
Go back
a
> 2s
1.000
0.100
( ( A A V V 5 5 ) ) 6000
123...
This function allows you to select the value of the VT-PT ratio (pri-
Measure
mary/secondary ratio of the voltage transformer being used).
Example: if the primary of the connected VT (voltage transformer) is
> 2s
20kV and the secondary is 100V, then the VT-PT ratio corresponds to
200 (obtained carrying out the following calculation: 20000/100).
( ( A A V V 5 5 ) )
Choose the VT-PT RATIO function
confirm the selection with "S". Then select by means of the "
key the desired value
Go back
a
> 2s
1.000
1.000
( ( A A V V 5 5 ) ) 6000
123...
(2) and confirm the selection with the "S" key.
by means of the "
and confirm the value with "S".
The instrument displays the maximum and the minimum value
available for the CT ratio.
(2) and confirm the value with the "S" key.
The instrument displays the maximum and minimum value avail-
able for the VT-PT ratio.
" key the SYSTEM function (1), press
" keys and confirm the selection with the
(1) by means of the "
13
" keys the
" keys
" key and
"