Electrical Test Instruments PI-6000
Section II - Detailed Description
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Page II-3
loads and more consistent pulse currents. The phase angle is internally
adjustable.
The measurement of output current and time is accomplished by means of the
proven MAC-21, which uses highly accurate A/D circuitry and intelligent
firmware to resolve true-RMS values of distorted waveforms. It also provides
features such as preset ON times for convenient jogging of output current
without overheating the breaker or causing unwanted trips.
The entire test set has been designed for reliability, ruggedness, and ease of use.
Sophisticated electronics in the indicator/control panel and the MAC-21 provide
state of the art accuracy and convenience, while simple connections allow for
easy removal and replacement for transportation or service. All covers are
removable, allowing easy access to all internal components. A horizontal relay
panel located just under the top panel contains most of the circuitry, facilitating
service and maintenance. Two large front-mounted fans provide maximum
airflow to the transformer and output bus, and rear exhaust directs air flow away
from the operator. The cabinet is designed with no protruding components on
the sides, so it can be navigated through narrow doorways without problems.
The input jacks and voltage switch are protected by the heavy-duty full width
handles on both ends.
