Installation Support Drawings; Grounding - GE Mark VIe System Manual

6.4 Installation Support Drawings

GE supplies the customer with site-specific documentation that can include a variety of drawings to display the equipment
installed at site. Drawings are typically B-size AutoCAD
• System Topology (4108)
• Cabinet Outline
• Cabinet Layout
• Circuit Diagram
Note An I/O Report can be generated from the ToolboxST application.

6.5 Grounding

This section defines grounding and signal-referencing practices for the control system. This can be used to check for proper
grounding and signal reference structure (SRS) after the equipment is installed. If checking the equipment after the power
cable has been connected or after power has been applied to the cabling, be sure to follow all safety precautions for working
around high voltages.
Warning
6.5.1 Equipment Grounding
Equipment grounding and signal referencing have two distinct purposes:
• Equipment grounding protects personnel from risk of serious or fatal electrical shock, burn, fire, and/or other damage to
equipment caused by ground faults or lightning.
• Signal referencing helps protect equipment from the effects of internal and external electrical noise, such as lightning or
switching surges.
Installation practices must simultaneously comply with all codes in effect at the time and place of installation, and with all
practices that improve the immunity of the installation. Code requirements for safety of personnel and equipment must take
precedence in the case of any conflict with noise control practices.
Note In addition to technical regulations, guidance from IEEE Std 142-2007 IEEE Recommended Practice for Grounding of
Industrial and Commercial Power Systems, and IEEE Std 1100-2005 IEEE Recommended Practice for Powering and
Grounding Electronic Equipment are provided by the design and implementation of the system.
134 GEH-6721_Vol_I_BP
®
, and can include the following:
To prevent electric shock, make sure that all power supplies to the equipment are
turned off. Then discharge and ground the equipment before performing any act
requiring physical contact with the electrical components or wiring. If test equipment
cannot be grounded to the equipment under test, the test equipment's case must be
shielded to prevent contact by personnel. Be sure to follow the site LOTO and safety
practices.
GEH-6721_Vol_I Mark VIe and Mark VIeS Control Systems Volume I
Public Information