MTS Acumen Electrodynamic - Manual (Page 21)

Electrical Disconnect
Ensure that there is access and adequate room behind the frame to allow electrical disconnection of the
power cord. Disconnect the power cord before cleaning or inspecting any part of the test frame.
When the hard cord kit option is used, 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 characteristic). 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.
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 Acumen Test System must be rated for the voltage and current specified
in the "Connecting the Main Power" section. Size the power system with adequate reserve for future equipment
additions and installation expansion. Power for the load frame controller 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).
Load Frame Power
Electrical power to the load frame should be free from outside RF Interference and provide 100-120 VAC or
200-230 VAC, 50/60 Hz. An isolated power source or uninterrupted 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
MTS Acumen™ Electrodynamic Test System 21
Site Preparation