The ASCO Power Manager (formerly Data Monitor) is a microprocessor based
metering device that provides real-time measurements of single and three
phase power systems. The Power Manager uses digital signal processing
technology to measure voltage and current per phase; real, reactive and
apparent power, and bi-directional energy. All measurements are viewed
locally with a backlit liquid crystal display and can be displayed
remotely with ASCO PowerQuest®
VPi or SiteWebTM
products.
Direct voltage input for systems up to 600 Volts AC can be monitored
without the use of external potential transformers (PT's). Measure 3 phase
currents and a fourth current input is available for measuring current in
the neutral conductor. The Power Manager includes one discrete input for
transfer switch position, eight general purpose discrete inputs, and four
relay outputs for controlling or monitoring external devices.
Power Manager Manual 381333-192A
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Power Metering
- Voltage:
Line - Line: VAB, VBC, VCA, VAVERAGE
Line - Neutral: VAN, VBN, VCN, VAVERAGE
- Frequency: 45.0 to 66.0 Hertz
- Current: IA, IB, IC, IAVERAGE
- Unbalance %: Voltage, Amps
- Real Power: KWA, KWB, KWC, KWNET
- Reactive Power: KVARA, KVARB, KVARC, KVARNET
- Apparent Power: KVAA, KVAB, KVAC, KVANET
- Real Energy: KWHIMPORT, KWHEXPORT, KWHNET
- Reactive Energy: KVARHIMPORT, KVARHEXPORT, KVARHNET
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Power Factor: PFA, PFB, PFC, PFNET
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Data Access
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Eight digital inputs, four relay outputs.
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Input/Output 15-character, user definable screen display for identification of input/output signals.
Configurable Designations
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Local - A four line 20 character LCD backlit display.
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Remote - With optional Acc. 72A communication module and
Power Manager monitoring sy-point based on watt demand and can be used to control one of the four relay outputs. Used for peak shaving applications.
Integrated ATS Features
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When configured on load of ATS:
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Displays ATS position.
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Displays power data as a function of ATS position (normal/emergency).
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Accumulates energy data separately for normal and
emergency sources.
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Optional Configurations and
Connection Arrangements
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Connected To:
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With Display
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Without display
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Load |
Acc. 85L
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Acc. 75L
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Load |
Acc. 85N
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Acc. 75N
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Load |
Acc. 85M
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Acc. 75M
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Load |
Acc. 85R*
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Acc. 75R*
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Add Suffix "A" to above designations if neutral conductor monitoring is required.
NOTE: Accessory 75 and 85 include component mounting, CTs, shorting blocks and all necessary interwiring.
* Bypass & isolation switch contacts wired to discrete power manager inputs. |
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