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160K(i) 60 Hz Power Conditioner | Owners Manual
GENERAL DESCRIPTION
The Series 700AV/T-S Power Processor is designed to supply reliable, clean regulated power to critical
loads. An efficient design with state of the art micro-processor controlled solid state devices provide
immunity to all line disturbances.
The basic design consists of a three phase triple shielded isolation transformer with seven separate voltage
taps per phase. Output regulation is achieved by monitoring the input and automatically switching taps
anytime the input line sags or surges. The use of a triple shielded isolation transformer provides superior
common mode and transverse mode noise attenuation. Automatic switching occurs during current zero
allowing noise free switches for both leading and lagging power factor loads that are connected to the
Series 700AV/T-S.
MONITOR
Monitoring of the Series 700AV/T-S is simple, clean and effective. Three green light indicators are utilized
to display "POWER ON". These indicator lights are connected directly to the output (line to neutral for each
phase) and indicate that the Series 700AV/T-S is operating properly with just a quick glance.
The Series 700AV/T-S is also provided with "INPUT OUT OF RANGE" red indicating LEDs for each phase.
If any phase of the input voltage source exceeds the specified +10%, -15% from nominal, the appropriate
phase LED is illuminated.
In addition, a red "ALERT" light is provided as an over temperature indicator. If an over temperature
condition exists, the "ALERT" light will illuminate and shut down the output. Over temperature thermal
sensors are strategically located at critical points on the regulator assemblies and transformer. The main
AC input circuit breaker must be turned off in order to reset the "ALERT" light.
OUTPUT VOLTAGE METERS
Two (2) digital output meters are provided. One monitors the 208/120 VAC output and the other monitors
the 480/277 VAC output. Each meter monitors and displays Line-to-Line and Line-to-Neutral voltages.
Minimum and maximum voltage values are recorded in EPROM. High and low output voltage limit alarms
are programmable and a visual indication given if limits are exceeded.
PROTECTION
Protection is accomplished very effectively to minimize failures and the cost of repairs. A total of five major
devices protect the Series 700AV/T-S.
1. The input is protected with an integrally mounted AC circuit breaker for abnormal current overloads
and provides a convenient means of disconnecting utility power.
2. The main transformer is protected by fuse links connecting the SCR regulators together, and are
designed to clear in the event that two or more SCR's should fail. This will prevent a transformer tap
short and the possibility of transformer failure.
3. Overtemp sensing devices are mounted at critical points on the SCR regulating assembly and the
main transformer. When an overtemp condition exists the "ALERT" light will illuminate and hold until
the overtemp is corrected. There are no automatic shut-off circuits for the "ALERT" condition. The
main AC input breaker must be turned off in order to reset the "ALERT" light.
4. Each output of the Series 700AV/T-S is protected with an integrally mounted AC breaker for abnormal
current overloads and provides a convenient means of disconnecting power from the load.
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