Motor Analyzer Parameters; Mechanical Parameters - Fluke 438-II User Manual

438-II
Users Manual

Motor Analyzer Parameters

The MOTOR ANALYZER screen shows the important mechanical and electrical parameters relative to their
rated values, industry standards, or the NEMA MG 1-2014 standard. A separate screen is available for the
Mechanical Parameters and one for the Electrical Parameters.
To open the screen:
1. Go to the MOTOR SETUP screen.
2. Press  (START).
3. Use 

Mechanical Parameters

The Mechanical Parameters screen shows power, torque, and speed at a glance. This screen also shows
the efficiency (ratio between electrical power supplied and mechanical power delivered) in %. A colored bar
graph indicates the performance of the motor compared to its rating.
The actual value for each parameter shows in the appropriate unit, its relative value in % of rated value or
standard, and a bar graph that shows the system performance as:
• good (green)
• adequate (yellow)
• poor (orange)
• bad (red)
Use 
The limit values where the bar graph turns from orange to red are set to NEMA and industry standards.
To view these limits, press  to open the ANALYZER LIMITS menu.
The default setting for efficiency is not to show a good or bad indication because the
motor can operate only at its rated efficiency at nominal load. For expert use, you can
customize the limits. See Set Analyzer Limits on page 7.
8
to move between the screens for electrical and mechanical parameters.
to move between the screens for electrical and mechanical parameters.
Note