Galvanic Applied Sciences 943-TGX-CE, Руководство по эксплуатации

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Revision 4 27 April 2020
2.4.3 Connection of the AC Power Service
The analyzer is classified as PERMANENTLY CONNECTED EQUIPMENT. At the time of
installation, the end user must supply a disconnect device located within easy reach of the
analyzer and marked as the disconnecting device for the analyzer.
The terminals for the connection of the AC power supply are located inside the flame proof
enclosure located inside the purge controller box, as indicated in Figure 8.
Figure 8: Location of AC Power Connection in Purge Controller Box
Installation of the conduit, wiring, and disconnect devices must comply with all
applicable, national, local, and company electrical codes. All connections must
be ‘sealed’.
The interior of the purge controller box can be accessed by removing the six screws that
hold the front cover in place. The cable entry size into the purge controller box is M20 x 1.5.
The end user is responsible for supplying a cable and a certified Ex d cable entry device
suitable for use in a Zone 1 IIC explosive gas atmosphere. The overall length from the sealant
(grommet or sealing compound) of the cable entry device to the entrance (enclosure wall) of
the internal flame proof enclosure inside the purge controller box shall be equal to or less
than 18” (45.7 cm). Follow the procedure below to connect power to the terminals.
1. The ground wire is to be a minimum of 14 AWG (2.08 mm
2
). Strip the insulation off the
last
0.5” (1.25cm) of the wire, tin the exposed wire using solder or install a blade-type
crimp terminal on the end of the wire, then connect to the GND terminal of the terminal
block indicated in Figure 8.
2. The hot (HOT) and neutral (NEU) are to be a minimum of 16 AWG (1.31 mm
2
). Strip
the insulation off the last 0.5” (1.25 cm) of each wire, tin the exposed wire using solder
or install a blade-type crimp terminal on each wire, then connect the hot wire to the