MTS Criterion Series 40 - Manual (Page 13)

Electrical Power Distribution
MTS Criterion
®
Series 40 Site Preparation Guide
Site Preparation 13
Electrical Power Distribution
Note Electrical connections must be made by qualified personnel and conform
to local codes and regulations. Local electrical codes supersede any
information found here.
The input line voltage to the MTS Criterion Test System must be rated for the
voltage and current specified in the
“Electrical Power Requirements” section on
page 21. Size the power system with adequate reserve for future equipment
additions and installation expansion. The power of the load frame console must
be considered in the distribution system, with emphasis on providing
“interference free” electrical power to the controls. Plan routing of power cables
away from instrumentation cables (for example, transducer cables). Avoid long
parallel runs of power cables in close proximity to instrumentation cables. Power
cables should be separated from instrumentation cables by 0.3 to 1 m (1 to 3 ft).
Electrical disconnect
The customer is responsible for providing an electrical power disconnect that is
easy to operate and easy to reach. It must also meet IEC 60947-1 and IEC 60947-
3 standards.
Recommended circuit breakers would be ones that are of the thermal magnetic
type with characteristics suitable for large inductive loads (D-type trip
characteristics). If fuses are used, it is recommended that they are of the time
delay type with dual elements. These recommendations should be followed to
avoid nuisance tripping.
Grounding Information
All equipment related to the load frame should be connected to the same
electrical circuit if possible. If the computer, monitor, or other peripherals are
connected to a different electrical circuit, (for example,the load frame is
connected to 208 VAC power but the computer and monitor are connected to 120
VAC power) make sure there is no voltage difference between the two different
grounds. If voltage is present, damage could occur to the electronics in the
machine, the computer and monitor, or the peripherals being used. This must be
resolved before turning on the equipment.
Where electrical power is of poor quality (noise spikes, poorly regulated, and so
forth) or the ground system in the facility contains electrical noise, attach a 4
AWG wire directly to a good earth ground point such as a 2 m (6 ft) copper
grounding rod driven at least 2 m (6 ft) into the ground. Grounding must conform
to local electrical codes.
Load Frame Power
Electrical power to the load frame should be free from outside RF interference
and match the specifications in the table on page 21 for each frame type. An
isolated power source or uninterruptible power supply is recommended if it is
desirable to maintain load frame power when power fails interrupt. Make sure
that the service to the MTS Criterion Test System is not on a line that can be
accidentally shut off. The MTS Criterion Test System and the computer
workstation should both be powered from the same electrical circuit.