Woodward ProTech 203, Руководство по эксплуатации

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Manual 85204 ProTech 203 Overspeed Protection System
Woodward 3
Chapter 2.
Installation
Unpacking
Be careful when unpacking the ProTech
®
203 system. Check the device for signs
of damage such as a bent or dented case and loose or broken parts. If damage
is found, notify the shipper immediately. The device may be stored in its original
shipping container until it is ready for installation. Protect the device from weather
and from extreme humidity or temperature fluctuations during storage.
Power Requirements
The ProTech 203 system can be configured to operate with numerous power
sources. Each unit contains an independent power supply module that can be
ordered in the configurations described in Tables 1-1, 1-2, and 1-3 in Chapter 1.
Each power supply must be provided with an external disconnecting
means that is identifiable to the specific power supply (A, B, or C).
Location Considerations
Carefully study this chapter before choosing a location for the ProTech 203
system. Wiring and grounding considerations may influence the selection of a
location for the device.
Consider the following general requirements when selecting the location:
•
Adequate ventilation for cooling
•
A location that will provide an operating temperature range of –25 to +60 °C
(–13 to +140 °F)
•
Space for servicing
•
Protection from direct exposure to sunlight, water, or to a condensation-
prone environment
•
Protection from high-voltage or high-current devices which produce
electromagnetic interference
•
Avoidance of vibration
Field wiring is provided to reset the device from a remote location.
Shielded Wiring
All shielded cable must be twisted conductor pairs with either a foil or a braided
shield. All signal lines should be shielded to prevent picking up stray signals from
adjacent equipment. Connect the shields as shown in the plant wiring diagram
(Figure 2-1), and install a wire (0.3–0.4 mm²/12–22 AWG) from terminal 13 to
terminal 3 on each unit. Wire exposed beyond the shield must not exceed 50 mm
(2 inches). The other end of the shield must be left open and insulated from any
other conductor. Do not run shielded signal wires with other wires carrying large
currents. See manual 50532,
EMI Control in Electronic Governing Systems
, for
more information.