3720 ACM
3720 ACM
3720 ACM
3720 ACM
3720 ACM
3720 ACM
Ask our team:
  • Phone: +86 181 0690 9650
  • E-Mail sales1@apterpower.com
How We Verify Your Order
Before dispatch, we confirm the exact model, revision, condition, inspection requirements and shipping documents for your order.
See a real on-site verification case >>

3720 ACM

/ 4.9
1001 reviews | Need a Specific Revision?
POWER MEASUREMENT 3720 ACM is a panel-mounted three-phase circuit monitor for metering, power-quality analysis, logging, communications and secondary control functions.
In Stock
Ships by Saturday, November 14
Fast Shipping Available
Get a quick price for 3720 ACM
Quantity
*E-mail
Company
*Mobile
*Content
Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)

Technical specifications for 3720 ACM

  • Manufacturer:
    POWER MEASUREMENT
  • Part Number:
    3720 ACM
  • Product Family:
    POWER MEASUREMENT
  • Product Type:
    Advanced Circuit Monitor and Three-Phase Power Meter
  • Stock:
    1
  • Processor:
    13.5 MHz, 16-bit microcontroller
  • Current Inputs:
    Three phase inputs plus I4 neutral/ground channel; 5 A nominal basic option
  • Voltage Inputs:
    120 VAC basic; 277 VAC and 347 VAC input options
  • Wiring Modes:
    4-wire Wye, 3-wire Wye, Delta and single phase
  • Status Inputs:
    4 dry-contact inputs with internal 30 VDC excitation
  • Control Relays:
    Three Form C 10 A relays or optional solid-state outputs, depending on execution
  • Auxiliary Output:
    0 to 20 mA into 250 ohm maximum
  • Basic Power Supply:
    100 to 240 VAC ±10%, 47 to 440 Hz; or 110 to 300 VDC ±10%
  • Operating Temperature:
    0 to 50°C basic; -20 to +70°C XTEMP option
  • Storage Temperature:
    -30 to +70°C
  • Dimensions:
    32 × 19.6 × 11.7 cm
  • Weight:
    2.8 kg
  • Tariff Code:
    9028301400
  • Country of origin:
    Canada
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Metering Transfer Control Safeguards Communications Recovery Application
  • Three-phase panel meter with real-time metering and power-quality functions
  • On-board data logging, waveform capture, waveform recording and programmable setpoints
  • RS-232 and RS-485 communication with supported protocol options

3720 ACM is a Power Measurement three-phase panel meter that combines electrical metering, power-quality analysis, programmable setpoints, event logging and waveform capture or recording.

The instrument supports configurable voltage and current inputs, relay or solid-state output options, status inputs and field-configurable serial communication for integration with a monitoring or control system.

Because the base name does not identify every installed option, ordering and replacement work must verify the rear label and the fitted 277, 347, XAMPS, SSR, P24/48, XTEMP, MPCC, MPE or related option configuration before wiring or commissioning.

Availability, condition, price, and shipping time for 3720 ACM are confirmed during quotation.

POWER MEASUREMENT 3720 ACM Advanced Circuit Monitor and Three-Phase Power Meter Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Export PT and CT ratios, demand setup and energy-direction settings
  • Record rear-label voltage and current option codes before removal
  • Compare all phase readings with an independent reference after installation
  • Keep primary protection independent of the 3720 ACM relays
  • Use a relay enable or bypass mechanism during commissioning
  • Prove each setpoint and relay action under a controlled test condition
  • Identify the installed communication card and active protocol
  • Restore serial standard, address, baud rate and framing exactly
  • Confirm register access, alarm reporting and time synchronization from the host
  • Three-phase switchboard and substation power monitoring
  • Power-quality, harmonic, waveform and event analysis
  • Energy logging and secondary equipment-control supervision
Description
3720 ACM is a microprocessor-based digital three-phase power monitor for industrial, commercial and utility distribution systems. It measures voltage, current, power, frequency, power factor, energy, demand, unbalance, harmonics and related diagnostic quantities.

The instrument supports Wye, Delta and single-phase wiring arrangements, with three phase-current channels plus a fourth current input for neutral or ground monitoring. Four dry-contact status inputs, control-relay options, an auxiliary voltage input and a 0–20 mA output extend its monitoring and control role.

For replacement, confirm the complete rear label and option population, then preserve CT polarity, PT ratios, voltage mode, communication card, setpoints and logs. Control relays are intended for secondary functions and should not be used as the sole protection for personnel or primary energy limiting.
Alternative Names
POWER MEASUREMENT 3720 ACM Power Measurement 3720 ACM 3720 ACM 3720ACM PML 3720 ACM Power Meter
Technical notes
3720 ACM replacement must preserve rear-label options, CT polarity and shorting, PT ratios, wiring mode, firmware, communications card, setpoints, relay bypasses, logs, grounding, and primary-protection independence.
Exceptional Service

Our Mission

  • 100% Satisfaction

    We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.
  • Trust Guaranteed

    Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.
  • Expertise

    Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Which label details should be supplied when ordering POWER MEASUREMENT 3720 ACM?
Provide the full rear label and photos showing voltage input, current range, supply, relay, communications, XTEMP and any 63.8 or other option markings.
Can POWER MEASUREMENT 3720 ACM be replaced without recording its setup?
No. Save PT and CT ratios, wiring mode, demand settings, setpoints, relay logic, communication parameters, logs and firmware identity before disconnecting the meter.
Why can POWER MEASUREMENT 3720 ACM show correct current but incorrect kW or power factor?
The usual cause is a phase or polarity mismatch between voltage and current channels; compare CT polarity and phase association with the approved wiring diagram.
What must be done before removing CT wires from POWER MEASUREMENT 3720 ACM?
Apply the installed CT shorting arrangement so the current-transformer secondary is never left open, then isolate voltage and auxiliary power under the site procedure.
Can POWER MEASUREMENT 3720 ACM relays be used as the only protective trip?
No. The manual excludes primary personnel and energy-limiting protection; use approved primary protective devices and treat the meter relays as secondary or backup functions.
Why might a replacement POWER MEASUREMENT 3720 ACM fail to communicate?
Compare the installed communication card, PML or Modbus selection, RS-232/RS-485 jumper, baud rate, data framing, unit address, polarity and host driver.
What acceptance checks are important after replacing POWER MEASUREMENT 3720 ACM?
Compare displayed phase values with a reference instrument, verify energy direction, exercise status inputs and relay bypasses, confirm communications, review alarms and prove a controlled power cycle.