φ
2.3
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Front view Bottom view
5.2
Wiring method
5.2.1 Wiring mode of AITR series medical isolation transformer
The input terminals at the transformer terminal blocks are labeled with “PM”, in which two
terminals 0 and 230 are connected to the input 220V single-phase AC. The output terminals are labeled
with “SEC”, in which the output voltage of two terminals 0 and 230 is AC 220V and is connected
to external field load. The S terminal is connected to the PE bus bar on the spot (or the equipotential
terminal line). Two ST terminals are temperature sensor interfaces, which are respectively connected
to the No.17 and 18 terminals of AIM-M10 insulation monitoring instrument.
Figure 2 AITR series medical isolation transformer terminal blocks diagram
Note: The wirings of input and output terminals of the isolation transformer should select the copper
wires matching the line diameter based on the isolation transformer rated input and output current
(refer to tables in section 5.4). S terminal wiring can select 2×4mm
2
yellow-green wire. The wiring
of two ST terminals can select 2×1.5mm
2
shielded twisted pairs, and the wiring should not be too
long.
5.2.2 Wiring mode of AIM-M10
Lower row terminals:
FE, KE (1,2) are connected to the field equipotential grounding terminal block as instrument
functional grounding.
A, B (3,4) are communication terminals connected with external alarm and display instrument.
+24V, 0V (5,6) are DC power output to supply power for alarm and display instrument.