Black Box IC109A-R2 Manuel d'installation Page 141

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13563230-216-229-B1
3
© 2007 Schneider Electric. All Rights Reserved.
Commissioning
Checking Sepam™ B83
Additional Phase Voltage
Input Connections
Block Diagram with Two Additional VTs
DE51261
* Detection of Plugged Connector (required for proper operation. Installed manually)
Procedure
Use the diagram above to perform the following steps
Checking with a Three-Phase Voltage Generator
1 Turn the generator on.
2 Apply the three generator voltages Van, Vbn, Vcn, balanced and set to the rated
secondary phase-to-neutral voltage of the additional VTs (V’
Ln
s
= V’
LL
s
/ 3)
3 Use the SFT2841 software to check that:
b the values indicated for each of the phase-to-neutral voltages V’an, V’bn,
V’cn, and the positive sequence voltage V’1 are approximately equal to the
VT's rated primary phase-to-neutral voltage (V’
Ln
p = V’
LLp
/ 3)
b the value of each of the phase-to-phase voltages V’ab, V’bc, V’ca is equal to
the VT's rated primary phase-to-phase voltage (V’
Ln
p)
4 Turn the generator off.
Checking with a Single-Phase Voltage Generator
1 Turn the generator on.
2 Apply the generator voltage V
Ln
set to the rated secondary phase-to-neutral
voltage of the additional VTs (V’
Ln
s = V’
LLs
/ 3) across Sepam™ voltage input
terminals 1 and 5 (via the text box).
3 Use the SFT2841 software to check that the value indicated for the phase-to-
neutral voltage V’ab is approximately equal to the VT's rated primary phase-to-
neutral voltage (V
Ln
p = V’
LLp
/ 3).
4 Apply the generator voltage V-N set to the rated secondary phase-to-neutral
voltage of the additional VTs (V’
Ln
s = V’
LLs
/ 3) across Sepam™ voltage input
terminals 3 and 5 (via the text box).
5 Use the SFT2841 software to check that the value indicated for the phase-to-
neutral voltage V’bc is approximately equal to the VT's rated primary phase-to-
neutral voltage(V’
Ln
p = V’
LLp
/ 3).
6 Turn the generator off when you finish this test.
Van
Vbn
Vcn
Vr
V‘an
V‘bn
V‘cn
V‘r
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