Hsiang Cheng Corp. ®

Model EPM 7000 Power Quality Meter

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Hsiang Cheng, EPM7000 Power Quality Meter

Characteristics:
  • For factory and building automation
  • Modbus®RTU protocol
  • Maximum 600V
  • True RMS conversion
  • LCD display
  • Field programmable PT / CT ratio
  • Accuracy up to 0.2%
  • Memory for all setup and energy data
  • Comprehensive self test diagnostics
  • Low input burden 0.1VA (5A / 120V)
  • Wide power supply range 80~260V AC / DC
  • Compact physical configuration
  • Compatible for DIN & ANSI cut out
  • 2KV RMS input / output / power isolation
Product Description:
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space EPM7000 digital power meters are an intelligent
approach to traditional power metering.
Each power meter is a compact, electronically advanced
and easily programmable with a multi-display.They are designed to be compatible
with the most widely used DIN standard panel
instruments (It fits the DIN 92 x 92 mm panel cutout
holes).Wiring is a breeze, you need only to connect one meter, it also uses standardized hardware suitable
for either 1 phase 2 wires, 1 phase 3 wires, 3 phase 3 wire
or 3 phase 4 wires networks.
These high-tech power meter are highly dependable, come with an accuracy of 0.2% for voltage and current and up to 0.25%. for
power measurement and long-term stability.A large LCD screen with alphanumeric readout allows the user to manually or automatically prioritize
and sequentially view the more than 30 electrical
parameters.

This versatile power meter is
equipped with a serial port (RS-485 or RS-232), to allow
connection to an open architecture network.
The Modbus® protocol aloows for communication to PCs or data acquisition systems . The EPM7000 software provides a simple
yet practical solution to energy management in factories
and plant, small industries, building services, etc.

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Features:
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  • Factory & Building Automation (FA & BA)The power meter was developed for factory and building
    automation (FA & BA) applications, more all of power
    and energy parameters can easily apply to wide range
    of AC switch-gear or industrial power distribution system
    for metering.
  • PLC Modbus CompatibleThe Modbus® communications protocol allows information
    and data to be efficiently transferred between EPM
    7000 and modicon programmable logic controllers (PLC)
    or other third party Modbus® compatible monitoring and
    control system. The EPM 7000 can also establish a monitoring
    system by using an IPC-based centralized
    master display software. (The RTU mode Modbus® protocol
    with defaullt baud rate 9600 bps, 8 data bit.)
  • Memory for all setup and energy dataAll of the meter status settings and energy data is retained
    in a non-volatile memory. EPM 7000 power meter
    records includes measured watt-hours, PT and
    CT ratios, system configurations, display settings, and communication parameters.
  • Field ProgrammabilityThe field programmable power meter is able to set e.g.
    CT and PT ratio, Modbus® address, communication baud
    rate, parity, meter’s display, etc. either programming
    by push-bottom or by rear RS-485 / RS-232 communication
    port from a PC.
  • Accuracy up to 0.2%Voltage and current up to 0.2% and other
    power up to 0.25%.
  • Comprehensive System IntegrationThe PLC compatible
    RS-485 / RS-232 Modbus® communication protocol for efficient data transfer between
    the EPM 7000 and Modicon programmable logic controller
    (PLC) existing RTU Power SCADA systems and DCS systems
    or other Modbus protocol compatible systems.
Specifications :
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Range:

Voltage : 10~600V
Current : suitable for CT secondary rating (optional)Maximum 6A for 5A ratingMaximum 1.2A for 1A rating
Triggered trace memory / fault recording range V ≤ 600VA ≤ 8 x rated
Frequency : 40 – 70Hz
Burden:
Voltage: < 0.4VA at 600V< 0.04VA at 150V
Current: < 0.1VA at 5A
Overload Capacity
Voltage 750V continuous1000V 10 seconds1200V 3 seconds
Current 2 x rated continuous10 x rated 30 seconds25 x rated 2 seconds

50 x rated 1 seconds

Monitoring/inputs/outputs
Measured system Suitable for 3 phase 4 wires / 3 phase 3 wires / single
phase 2 & 3 wires / 3 phase balanceSelect by input wiring & software configuration
Programmability: Software accessible / password lockSystem selection : 3 phase 4 wires / 3 phase 3 wires
/1 phase 2 & 3 wires and 3 phase balancePT : 1 – 5000.0 ; CT : 1 – 2000.0
Readout display control 4 digits / auto scan or manual selection / scanning time
Communication Baud rate 1200 / 2400 / 4800 / 9600 / 19200Address setting 1 – 254Calibration : software with password lock

Memory : all of energy date and status setting

Normal Operation 250Vac / 30Vdc, 10A resistive250Vac / PF 0.4, 6A inductive30Vdc / t=7ms, 6A inductive
Interrupting Capacity 300Vac, 10A250Vdc, resistive 0.32A maximum, t=7ms125Vdc, resistive 0.5A maximum, t=7ms
Analog Input ( AI ) Accuracy, 0.5% fs3 differential analog inputs / process variablesStandard input 4-20mA / 0-20mA

Common mode voltage E100V maximum

Option input 0-10V / 0-5V / 0-1V / 1-5V / 2-10V

Analog output (AO) Accuracy, 0.5% fs4 isolated analog outputsStandard output 4-20mAdc / load ≤ 500Ω

Configurable
Measured parameters

Input range, unipolar / bipolar

Pulse Output ( PO ) 2 pulse outputs photo-isolatedConfigurableParameter , WH / VarH / VAH / AH

Unit, ±1WH / ±1QH / 1VAH / 0.01AH

Pulse width / 50% duty cycle

Standard output: 4-20mAdc / load < 500Ω
Configurable Measured parameters Input range, unipolar / bipolar
General Specifications
Communication ports: RS485 ( standard ) ;RS232 ( option )Modbus® RTU protocol
Display: LCD 0.4” display, 3 rows of 8 alphanumerics
RTC Maximum deviation 5 seconds in 24 hoursTime for year / month / day / hour / minute / sec
Dielectric strength: IEC 255-52KV AC rms 1 minute between input / output / power
Impulse and surge test: ANSI/IEEE C37.90.1-1989 (3KV) SWC testIEC 255-22-1 class III SWC testIEC 255-22-4 class IV (IEC 801-4) SWC test

IEC 255-5 1.2 x 50us (5KV) impulse test

Stability: Temperature range -25 to +55°C, maximum 100 ppm/°CLong term stability 0.15% drift maximum per year
Operating condition: Temperature range -25 to +60°C,RH 20 – 95% non-condensed
Storage condition: Temperature range -25 to +60°C,RH 20 – 95% non-condensed
Power supply: AC 80-260V, 40-70Hz, DC 80-330VDC 20-60VDissipation maximum 12VA for AC and 6 Watts for DC
Mounting / Dimension: Panel type mountingDIN 120 x 120 x 130.5mmCut out : 92 x 92mm
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pdf_pic  General Specifications
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