Vaisala CAB100, Руководство по установке, Страница: 41 / 146

5.3 Expanding galvanic isolator
installation in CAB100A
• Small flat head screwdriver
Vaisala recommends that you use the cable lead-throughs on top of the cabinet to lead
the external wiring for the galvanic isolators into the cabinet.
The galvanic isolator cable contains wiring for 4 isolators. If the number of isolators inside
CAB100A totals less than 4 after installation, leave the extra wires unconnected and the
wire end caps in place.
Follow the steps below to add new galvanic isolators to an existing set of devices in
CAB100A. A maximum of 4 isolators can be housed inside CAB100A.
Refer to
CAB100A layout diagrams (page 130) when planning the installation.
1. Switch off mains power.
2. De-energize the existing isolators.
Disconnect the isolator power wires from the fuse terminal blocks located at the right-
hand end of the power block.
3. Take note of the wiring instructions printed on the side of the isolator. The information
will be relevant when connecting wires in the intrinsically safe screw terminals of the
isolator in
step 6 .
Chapter 5 – Adding devices to CAB100A
39