Motorola IRRInet-XL Owner's Manual page 28

Remote terminal unit
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- The 45 VA main power transformer is used only in RTUs with
Portable Radios due to its 45 VA output power rating.
- In NEMA4X housing enclosures the 45 VA transformer is installed
using a special bracket mounted on the 3-slot metal chassis (p/n:
FHN6105).
- In NEMA4 housing enclosures the 45 VA transformer is installed in
the bottom left hand corner. Refer to Figure 2-13.
- In NEMA4X and NEMA4 housing the 45 VA transformer has a 1
Amp 250V line fuse installed (p/n: 6500052281). This fuse is placed
between the main AC power source and the primary input of the
transformer on the live wire using the metal bracket
(p/n: 0786494F01).
Assembly Instructions for 3-slot Chassis or NEMA4X Housing Enclosure:
1. Verify that the 45 VA Main Power Transformer voltage matches the line
Voltage. The operating input voltage of the 45 VA transformer is indicated
above its primary terminal connection posts.
2. The cable from the main power line should be inserted into the housing
enclosure through the round opening provided at the bottom of the housing.
3. Connect the primary live wires of the 45 VA Power Transformer and of the
I/O-AC Transformer (if assembled) into the terminal connector marked "~".
Connect both neutral wires from the 45 VA Power Transformer and the I/O-
AC Transformer (if assembled) into the terminal connector marked "N".
Connect the AC Ground to the protective ground strip. Refer to Figure 2-12
for wire connections.
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- Verify that the cable wires, and connection colors comply with local
standards.
- Use the Grounding Strip in the RTU for line ground input.
4. Connect the secondary (output) of the 45 VA Power Transformer to the
Power Supply Module "PWR IN" inlet using the supplied cable (Motorola p/n:
FKN4463).
2-12

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