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9 Powerup and debugging instructions
9.1 Wiring check
For each set of IT system, the wiring check should be conducted before powerup, mainly checking
whether there is wrong, missed or short connection. The examination can be conducted sequentially
in the following order according to the wiring diagrams shown in section 5.4 of this manual:
1) Check if each six-piece suite forms a separate IT distribution system, and ensure that the current,
resistance, and temperature signal wirings of each insulation monitor are connected to the same
isolation transformer and IT system composed of it.
2) Check whether the L and N input terminals of each set of the HDR-60-24 power supply module are
connected to the 0 and 230V terminals of primary side of the isolated transformer. Whether the +V
and -V of its 24V output terminal is respectively connected with the No.1(24V) and 2(G) terminals
of AIM-M300(or AIM-M300/SG), No.1(24V) and 2 (G) terminals of AIL150/AIL160, No.24V and G terminals
of AID150, and the positive and negative poles are all correctly connected.
3) Check whether the No.8(I0) and 9(I1) terminals of AIM-M300(or AIM-M300/SG) in each system are
reliably connected to the terminals of the transformer AKH-0.66P26 socketed to the secondary side
of the corresponding isolation transformer, and are not grounded. The transformer only passes one
of the two lines of the output terminals of the isolation transformer.
4) Check whether the No.11(T0) and 12 (T1) terminals of AIM-M300 series IMD in each system are
reliably connected to the two ST terminals of the isolation transformer.
5) Check whether the No.4 (L1), 5 (L2) terminals of AIM-M300 series IMD are reliably connected to
the two lines of the IT system (that is the secondary side of the isolation transformer).
6) Check whether the No.13 (FE), 14 (KE) terminals of AIM-M300 series IMD in each system are
respectively connected to the on-site equipotential terminals through wires, in the meanwhile the
S terminals of isolation transformer is reliably connected to the equipotential terminals.
7) Check whether the No.18 (H), 19 (L) terminals of AIM-M300 series IMD CAN communication in each
system are respectively connected to No.21 (h), 22 (L) terminals of AIL150-4 (or-8), and the CAH,
CAL terminals of AID200 in the way of hand in hand, which are reliable connections with the positive
and negative poles correct.
8) If each isolation transformer has a cooling fan, check whether the cooling fan power supply control