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DEWE-820-PFR
Power Fault Recorder with the Dewetron difference
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Dewetron, Inc.
10 High Street, Ste K
Wakefield, RI 02879-3144
Tel: +1 401-284-3750
Fax: +1 401-284-3755

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The DEWE-820-PFR is our flagship POWER FAULT RECORDER, ideal for substations and other fixed installations.
  • Monitoring of power supply systems
  • Power plant testing and monitoring
  • High-, medium- and low voltage systems
  • Fault recording, harmonics, flicker
  • IEC 61000, EN50160
  • ITIC (CBEMA) and UNIPEDE
  • Database storage and remote control
    DEWE-PFR power fault recorders are network analyzers for low, medium and high voltage systems. Because of the flexibility of the software, many functions can be done in a single instrument - from fault recording to RMS monitoring of up to 48 analog channels voltage or current.

    DEWE-PFR instruments identify and store power faults as waveforms for detailed analysis. They can even use calculated line-to-line channels for these events.
    Top Applications
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    Easy fan access
    Remote access
    Expandable to many more channels
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    The front panel opens up to provide access to the fans and their filters, for easy cleaning
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    Our PMT database software is included - runs on your SQL server, for wide scale report generation
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    Banks of 16 ISOLATION modules are available for every PFR system
    There are three basic DEWE-PFR platforms to choose from:
    DEWE-818-PFR
    Two box solution
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    Up to 48 voltage or current with DEWE-30-16-PFR
    ± 1400 V peak voltage input range
    5A direct current input range
    3000A max via current sensors
    250 kS/s aggregate sample rate @ 16-bit
    Requires DEWE-30-16-PFR and up to 16 DAQP / HSI series plugin modules (shown below)
    DEWE-30-16-PFR
    Input chassis for the DEWE-818-PFR
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    The DEWE-818-PFR requires a SEPARATE CHASSIS for the signal conditioning.
    DEWE-30-16-PFR chassis:
    16 slots for DAQP and HSI series plugin modules
    Rack mounting and desktop design
    DEWE-820-PFR
    Single box solution for plugin modules
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    16 slots for DAQP modules on rear panel
    ± 1400 V peak voltage input range
    5A direct current input range
    3000A max via current sensors
    250 kS/s aggregate sample rate @ 16-bit
    Requires DAQ / HSI modules to be ordered additionally
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    Above: rear panel view of the DEWE-820-PFR, showing the plugin signal conditioning
    DEWE-821-PFR
    Single box solution for built-in input amps
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    With 4 x isolated voltage and 4 x AC current inputs
    Expandable up to 12 x voltage and 12 x current channels
    ± 1400 V peak voltage input range
    5A direct current input range
    3000A max via current sensors
    250 kS/s aggregate sample rate @ 16-bit
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    Above: rear panel view of the DEWE-821-PFR, showing the built-in isolated signal conditioning
    DEWE-818-PFR
    Power Fault Recorder, CPU unit
    19" rack-mount chassis, 4U, 300 mm depth
    4 free PCI slots half length for AD cards
    Microsoft® Windows® 7 operating system
    2 GHz Intel® Core2Duo processor, 2 GB RAM, 1 TB HDD, DVD +-RW drive 2 x USB, 1 x RS-232, 1 x LAN Ethernet, internal watchdog
    Power supply 115 / 230 VAC, no keyboard
    DS-7-SE, DS-OPT-POWER and DS-OPT-DB included

    DEWE-30-16-PFR
    16 slot mainframe for DEWETRON modules
    Prepared for up to 4 additional digital modules in total (ADD-8DIN, ADD-8DOUT) Includes AD16-250-16 AD card and connection cable 2 m
    Includes serial interface for DAQP / PAD modules
    Power supply 115 / 230 VAC

    Analog inputs:
    According to the DAQP or HSI series plugin modules installed in the DEWE-30-16-PFR


    Safety:
    Safety test: IEC -61010-1
    ESD: IEC 61000-4-2: 8 kV contact; 15 kV air
    EMC: EN 55011: Class A
    Power supply, surge: IEC 61000-4-5: 4 kV
    Power supply, burst: IEC 61000-4-4: 4 kV; L, N, PE
    Voltage inputs, surge: IEC 61000-4-5: 4 kV
    Voltage inputs, burst: IEC 61000-4-4: 4 kV
    Current inputs, surge: IEC 61000-4-5: 2 kV
    Current inputs, burst: IEC 61000-4-4: 2 kV

    Software specs
    DS-7-SE, DS-OPT-POWER, DS-OPT-DB included
    See DS-7 specifications for complete details.

    Accessories included:
    Power cables
    Printed manuals and software backup media

    Mechanical Specs
    DEWE-818-PFR: 19” rack-mount, 4U
    437 x 304 x 181 mm (17.2 x 12 x 7.1 in.)
    Weight: Typ. 12 kg (26.4 lb.)

    DEWE-30-16-PFR: 19” rack-mount, 3U
    437 x 133 x 245 mm (17.2 x 17.4 x 7.1 in.)
    Typ. 6 kg (13.2 lb.)

    DEWE-821-PFR: 19” rack-mount, 4U
    437 x 443 x 181 mm (17.2 x 17.4 x 7.1 in.)
    Typ. 12 kg (26.4 lb.)

    DEWE-820-PFR: 19” rack-mount, 4U
    437 x 443 x 181 mm (17.2 x 17.4 x 7.1 in.)
    Typ. 12 kg (26.4 lb.)

    Environmental Specs
    Temp: 0 ~ +50 °C (operating)
    Humidity: 5 ~ 95% RH
    DEWE-820-PFR
    Power Fault Recorder
    19" rack-mount chassis, 4U
    Rear panel rack requires up to 16 DAQ/HSI series plugin modules
    Includes AD16-250-16 with 16-bit resolution, 250 kS/s total sampling rate
    e.g. 19.2 kS/s sampling rate per channel (with 4 channels voltage and current)
    2 GHz Intel® Core2Duo processor, 2 GB RAM, 1 TB HDD
    2 x USB, 1 x RS-232, 1 x LAN Ethernet
    Power supply 115 / 230 VAC
    Microsoft® Windows® 7 operating system
    DS-7-SE, DS-OPT-POWER and DS-OPT-DB included

    Analog inputs:


    Safety:
    Safety test: IEC -61010-1
    ESD: IEC 61000-4-2: 8 kV contact; 15 kV air
    EMC: EN 55011: Class A
    Power supply, surge: IEC 61000-4-5: 4 kV
    Power supply, burst: IEC 61000-4-4: 4 kV; L, N, PE
    Voltage inputs, surge: IEC 61000-4-5: 4 kV
    Voltage inputs, burst: IEC 61000-4-4: 4 kV
    Current inputs, surge: IEC 61000-4-5: 4 kV
    Current inputs, burst: IEC 61000-4-4: 4 kV

    Software specs
    DS-7-SE, DS-OPT-POWER, DS-OPT-DB included
    See DS-7 specifications for complete details.

    Accessories included:
    Power cables
    Printed manuals and software backup media

    Mechanical Specs
    DEWE-820-PFR: 19” rack-mount, 4U
    437 x 443 x 181 mm (17.2 x 17.4 x 7.1 in.)
    Typ. 12 kg (26.4 lb.)

    Environmental Specs
    Temp: 0 ~ +50 °C (operating)
    Humidity: 5 ~ 95% RH
    DEWE-821-PFR
    Power Fault Recorder
    19" rack-mount chassis, 4U
    isolated inputs: 4 x voltage up to 700 Vrms and 4 x AC current up to 5 Arms
    expandable to max. 24 analog inputs and 64 digital inputs/outputs (only with DS-7 software) optional the 5 A inputs can be changed to voltage inputs (for PNA-CLAMPs with voltage output) or FLEX inputs (for PNA-FLEX)
    incl. AD16-250-16 with 16-bit resolution, 250 kS/s total sampling rate
    e.g. 19.2 kS/s sampling rate per channel (with 4 channels voltage and current)
    2 GHz Intel® Core2Duo processor, 2 GB RAM, 1 TB HDD
    2 x USB, 1 x RS-232, 1 x LAN Ethernet
    Power supply 115 / 230 VAC
    Microsoft® Windows® 7 operating system
    DS-7-SE, DS-OPT-POWER and DS-OPT-DB included

    Analog inputs:


    Safety:
    Safety test: IEC -61010-1
    ESD: IEC 61000-4-2: 8 kV contact; 15 kV air
    EMC: EN 55011: Class A
    Power supply, surge: IEC 61000-4-5: 4 kV
    Power supply, burst: IEC 61000-4-4: 4 kV; L, N, PE
    Voltage inputs, surge: IEC 61000-4-5: 4 kV
    Voltage inputs, burst: IEC 61000-4-4: 4 kV
    Current inputs, surge: IEC 61000-4-5: 4 kV
    Current inputs, burst: IEC 61000-4-4: 4 kV

    Software specs
    DS-7-SE, DS-OPT-POWER, DS-OPT-DB included
    See DS-7 specifications for complete details.

    Accessories included:
    Power cables
    Printed manuals and software backup media

    Mechanical Specs
    DEWE-821-PFR: 19” rack-mount, 4U
    437 x 443 x 181 mm (17.2 x 17.4 x 7.1 in.)
    Typ. 12 kg (26.4 lb.)

    Environmental Specs
    Temp: 0 ~ +50 °C (operating)
    Humidity: 5 ~ 95% RH
    Options for all three PFR models
    PFR-ADD-8DIN
    821-PFR-ADD-4U-4I
    PFR-ADD-8DOUT
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    Adds 8 digital inputs to your DEWE-8xx-PFR system. This option can only be ordered once per system.
    Adds 4 x voltage up to 700 VRMS and 4 x AC current up to 5 ARMS. Applies only to the DEWE-821-PFR.
    Adds 8 digital outputs to your DEWE-8xx-PFR system. This option can only be ordered once per system.
    Options for PFR models which require plugin signal conditioning modules
    DEWE-818-PFR and DEWE-820-PFR
    DAQP-HV-SC
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    Isolated HIGH VOLTAGE input module for DEWE-818-PFR and DEWE-820-PFR
    Seven selectable ranges ±20, 50, 100, 200, 400, 800 and 1400 V, bandwidth DC to 300 kHz
    Selectable filters 10, 30, 100, 300 Hz, 1k, 3k, 10k, 30k, 100k and 300 kHz, filter characteristic butterworth or bessel (300 kHz Bessel only)
    Accuracy typ. ±0.05 %
    Connector: screw terminals for 4 mm2 wires
    DAQP-LV-SC
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    Isolated LOW VOLTAGE input module for DEWE-818-PFR and DEWE-820-PFR
    Selectable ranges ±0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2.5, 5, 10, 25, 50 V, bipolar or unipolar, AC or DC coupling,
    Bandwidth DC to 300 kHz
    Selectable filters 10, 30, 100, 300 Hz, 1k, 3k, 10k, 30k, 100k and 300 kHz, filter characteristic butterworth or bessel (300 kHz Bessel only)
    Accuracy typ. ±0.05 %
    Connector: screw connectors 4 mm2
    DAQP-LA-SC
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    Isolated CURRENT input module for DEWE-818-PFR and DEWE-820-PFR
    Up to 5A continuous current
    isolated inputs, internal 0.1 Ω shunt
    Selectable ranges ±0.1, ±0.3, ±1A, ±3A, ±10 Apeak, ±30 Apeak, bandwidth DC to 300 kHz
    Selectable filters 10, 30, 100, 300 Hz, 1k, 3k, 10k, 30k, 100k and 300 kHz, filter characteristic butterworth or bessel (300 kHz Bessel only)
    Accuracy typ. ±0.05 %
    Connector: screw terminals for 4 mm2 wires
    DAQ series ISOLATED plugin modules
    ISOLATED, MEDIUM BANDWIDTH (up to 300 kHz), HOT-SWAPPABLE... Choose from universal, strain, high voltage (±1400V), low voltage (±10 mV), temperature, F/V, IEPE...
    Key Features
    • High isolation up to 1.8 kVRMS
    • High bandwidth up to 700 kHz
    • ±5 V conditioned signal output
    • Easy to exchange, hot-swappable
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    Brochure PDF file, 1 MB
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    DAQ Manual PDF file, 5 MB
    High voltage
    DAQP-HV and HV-S3
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    Low voltage
    DAQP-LV
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    Strain / universal (300 kHz bandwidth)
    DAQP-STG
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    Current
    DAQP-LA and -LA-B-S1
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    Isolated high voltage input module
    300 kHz bandwidth (optionally 700 kHz)
    ±20 to ±1400V ranges
    1.8 kVRMS line to line isolation
    1.4 kVRMS line to ground isolation
    Optional screw terminal connectors for permanent installation
    Hot-swappable plug-in module with conditioned ±5 V output
    Isolated low voltage input module
    300 kHz bandwidth
    ±10mV to ±50V ranges
    AC/DC coupling
    Isolation: 1 kV (banana) or 350 VDC
    4-20 mA and ±5A via external shunts
    Banana, BNC, LEMO, DSUB, or screw
    Hot-swappable plug-in module with conditioned ±5 V output
    Isolated universal input module
    300 kHz bandwidth
    350 V isolation
    Handles Strain gage and bridge sensors (constant voltage excitation), Piezoresistive bridge sensors (constant current excitation), Voltage up to ±10 V, RTDs (Pt100 to Pt2000), Resistance
    Additional sensors via MSI
    Isolated low current input module
    300 kHz bandwidth
    1.4 kVRMS Input to ground
    0.1 A, 0.3 A, 1 A, 3 A, 10 A peak, 30 A peak, DAQP-LA-B-S1: 2 mA, 6 mA, 20 mA, 60 mA, 200 mA, 0.6 A
    Screw terminals or banana jacks
    IEPE accelerometers
    DAQP-ACC-A
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    IEPE module with sensor supply
    300 kHz bandwidth
    ±50 mV to ±5 V input
    4 mA or 8 mA excitation current
    Hot-swappable plug-in module with conditioned ±5 V output
    Frequency to voltage
    DAQP-FREQ-A
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    Frequency to voltage module
    Additional conditioned TTL output
    Ranges up to 200 kHz
    Input and output filters
    Auto trigger level detection (or manual)
    Isolation: ±350 V
    Hot-swappable plug-in module with conditioned ±5 V output
    Universal (3 kHz b/w)
    DAQP-MULTI
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    Isolated universal input module
    3 kHz bandwidth
    1000 V isolation
    Any thermocouple, internal linearization Also RTD (Pt100, Pt200, Pt500, Pt1000 and Pt2000 sensors), resistance from 1Ω to 1 MΩ, Bridge input: constant current powered 4-wire full bridge sensors, 13 ranges from ±0.5 to 5000 mV/mA, Voltage 10 ranges from ±5 mV to ± 5 V
    Hot-swappable plug-in module with conditioned ±5 V output
    Thermocouple (3 kHz b/w)
    DAQP-THERM
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    Any thermocouple (K, J, T, R, S, N, E, B, L, C, U)
    Freely programmable range
    Internal linearization, ±5 V linear output
    High-speed, 3 kHz bandwidth
    High Isolation, ±1000 Vrms continuous
    Universal thermocouple MINI input connector
    Hot-swappable plug-in modules with conditioned linear ±5V output
    DEWE-820-PFR Resources
    There are a variety of things that you can download here, including the PDF product brochure and manual. The third link will take you to another page where you can download DS-7 software and related resources.
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    Download the Brochure PDF file
    1 MB
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    Software download page
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    DEWE-820-PFR manual
    1 MB PDF
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    DEWE-821-PFR manual
    1 MB PDF
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    DEWE-PFR2 manual
    2 MB PDF
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    DEWE-PMT manual
    2 MB PDF
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    We will send you a price quotation for the DEWE-820-PFR plus any of the options and upgrades that you specify below. Thanks for your interest, and we look forward to assisting you.
    Please choose your PFR model:
    1. DEWE-818-PFR and DEWE-30-16-PFR rack
    2. DEWE-821-PFR
    3. DEWE-820-PFR
    Please choose your PFR options (these apply to all three models):
    1. PFR-ADD-8DIN
    2. PFR-ADD-8DOUT
    3. 821-PFR-ADD-4U-4I
    Please choose your plugin signal conditioners
    (does not apply to DEWE-821-PFR):
    Please enter a quantity for each module, or leave them at zero if you do not require them,
    Adds 8 digital inputs to your DEWE-8xx-PFR system. This option can only be ordered once per system.