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Voltage and Frequency Sensing
• 3-Phase under and over voltage settings on normal
and emergency sources.
• Under and over frequency settings on normal and
emergency.
• True RMS Voltage Sensing with +/- 1% accuracy;
Frequency Sensing Accuracy is +/- 0.2%.
• Selectable settings: single or three phase voltage
sensing on normal and emergency; 50 or 60Hz.
• Phase sequence sensing for phase sensitive loads.
• Voltage unbalance detection between phases.
Status and Control Features
• Output contact (N/O or N/C) for engine-start signals.
• Selection between “commit/no-commit” on transfer
to emergency after engine start and normal restores
before transfer.
• Advanced inphase algorithm which automatically
measures the frequency difference between the two sources
and initiates transfer at appropriate phase angles to
minimize disturbances when transferring motor loads.
• Event log displays 99 logged events with the time and
date of the event, event type and event reason.
• Output signals for remote indication of normal and
emergency source acceptability
• Statistical ATS/System monitoring data screens which provide:
• Total number of ATS transfers.
• Number of ATS transfers caused by power source failure.
• Total number of days ATS has been in operation.
• Total number of hours that the normal and emergency
sources have been available.
Time Delays
• Engine start time delay - delays engine starting signal to
override momentary normal source outages - adjustable
0 to 6 seconds.
• Transfer to emergency time delay - adjustable 0 to 60
minutes.
• Emergency source stabilization time delay to ignore
momentary transients during initial generator set
loading - adjustable 0 to 6 seconds.
• Retransfer to normal time delay with two settings:
• Power failure mode - 0 to 60 minutes.
• Test mode - 0 to 60 minutes.
• Unloaded running time delay for engine cooldown -
adjustable 0 to 60 minutes.
• Pre and post transfer signal time delay for selective
load disconnect with a programmable bypass on source
failures - adjustable 0 to 5 minutes. This signal can be
used to drive a customer furnished relay, or for (2) sets
of double throw contacts rated 3 amps at 480 volts AC,
specify ASCO optional accessory 31Z.
• Fully programmable engine exerciser with seven
independent routines to exercise the engine generator,
with or without loads, on a daily, weekly, bi-weekly or
monthly basis.
• Contains all alarm signals, logic and time delays for
use with closed transition switches.
• Insynch time delay - 0 to 3 seconds.
• Failure to synchronize - 1 to 5 minutes.
• Extended parallel - 0.1 to 1.0 seconds.
• Delayed transition load disconnect time delay -
adjustable 0 to 5 minutes.
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7000 Series Microprocessor Controller
Features
• Digital microprocessor.
•
Touch pad programming of features and settings
without the need for meters, or variable power supplies.
• Sixteen (16) selectable operating voltages available in
a single Controller.
• On-board diagnostics provide control panel and ATS
status information to analyze system performance.
• Displays and counts down active timing functions.
• Selectable multi-language display
(English, German, Portuguese, Spanish, or French.
For others contact ASCO).
• Password protection to prevent unauthorized tampering
of settings.
• Serial communications board (RS-485 protocol)
for remote monitoring and control with ASCO
PowerQuest
®
and SiteWeb™ communications
products. Specify optional accessory 72A.
• Load shed option for SYNCHROPOWER® bus
optimization applications. Specify optional accessory 30B.
ASCO