Megger TORKEL 910, User Manual

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CS033663DE ZP-CS01E TORKEL 900-SERiES 39
9 OPTiONAL EQUiPMENT
Warning
A BVM control cable must never be connected
directly to a computer network inlet.
When battery string voltage is over 300 V an
opto coupler must be used, see Fig. 9.3.
2]
A. Battery string voltage max 300 V
Connect the cable from "Power & signal
connector" to BVM1 / BVM2 terminals on
TORKEL 900.
B. Battery string voltage max 500 V
Connect the cable from "Power & signal con-
nector" to Opto Coupler (UH401-2kV).
3]
A. Battery string voltage max 300 V
Connect to a grounded Power Supply
B. Battery string voltage max 500 V
Connect to a ungrounded Power Supply
Warning
Do not use any other Power Supply than the
original delivered together with BVM.
4]
Start TORKEL 900
The BVM “Auto Discovery” feature enables the host
device to automatically determine the number of bat-
teries under test and provide sequential identification
of each BVM in the test string.
Note
The cell numbering can be done from minus
to plus or reversed and shall correspond to the
setting in TORKEL. The red BVM conected to
plus is not included in the numbering.
When “Cell number from plus” is selected
in TORKEL settings, the most positive cell is
Cell 1, when this setting is not selected, then
the most negative cell is Cell 1.
The initialization time for the BVMs depends on how
many BVMs are connected. E.g. with 2 loops and
240 BVMs, it is about 3 to 4 minutes. With 1 loop and
12 BVMs, some seconds.
The connected cells are shown under tab “CELLS”.
Fig.9.2 When the battery bank exceeds 120 cells, this connection with 2 BVM loops shall be used.
Connect the first loop to the BVM1 connector on TORKEL and the second loop to the BVM2 connector on TORKEL.
Fig.9.3 The connection shown above must be used when the battery bank voltage is between 300 V and 500 V.
It includes two opto couplers and two ungrounded power supplies.