DMM3

DMM3 is a 9 DIN module multi-functional instrument ideal for the measurement and display of electrical parameters.
The large clear led displays showing the parameters and values are easily read under all lighting conditions.
The instrument displays up to 28 RMS parameters and transmits 53 (see tables).
It is suitable for installation in single phase, two phase and three phase systems. Connection is via sturdy 2.5 mm² terminals and 5A secondary CTs for current measurement.
Operation is via a simple pushbutton located on the front panel, with set up keys hidden behind a hinged cover.

Each  unit  is  delivered  with  its calibration  certificate and  it  is  covered  with            3 years warranty period.

INSTRUMENT ADVANTAGE

- Replaces traditional analogue instruments with one digital package.
- Improved accuracy and reliability.
- Simplified installation reducing costs.
- Competitive pricing.
- Superior performance on distorted waveforms
- Low cost transducer for network and sub-metering applications

DISPLAY 28 MEASURES

  The DMM3 displays 28 measures.

MEASURES TRANSMITTED

The serial interface, when used in Modbus BDC mode, transmits the following measures

MODELS

DMM3: standard model without outputs
DMM3 4-20 mA: 2 analogue outputs 4-20 mA or 0-20 mA
DMM3 485: RS485 serial output MODBUS ASCII or BCD or IEEE protocol.        DMM3 RS232 RS232 serial output MODBUS ASCII or BCD or IEEE protocol.               DMM3 LON FTT10: special model with LONWorks protocol FFT10 output                DMM3 LON RS485: special model with LONWorks protocol RS485 output    

TECHNICAL FEATURES

 
• - Maximum size (mm): instrument: 157.5 X 73 X 90. (9 DIN module)
• - Power supply: from network 230 V ~ or 115 V ~ ± 10% @ 50/60 Hz (4 VA)
• - Display: Seven-segment 13 mm red LED’s , 9 digit on 1 line
• - Voltmeter inputs: VL1, VL2, VL3, N up to 430 V ~ phase-neutral,       750 V ~ phase-to-phase, 35 ÷ 400 Hz.
• - Voltmeter input impedance: 2 M
• - Voltage input overload: max 850 V phase-neutral
• - Amperometric inputs: AL1, AL2, AL3. Consumption 1 VA
• - Three /5A external curr.transf. required 3 PH And n, 3 PH
• - Current input overload: max 7 A ~
• - Number of scales: 1 voltage scale, 2 current scales
• - Measurements: True R.M.S.
• - Sampling frequency 2400 samples/sec
• - Accuracy: Class 1
• - Connections: : Single phase ; three phase +neutral; three phase    delta, two phase+ neutral
• - Weight of instrument: 0.6 Kg
• - Protection level: instrument IP20, front panel IP40
• - Ambient temperature range: -10°C ÷ + 60°C
• - Relative humidity range (R.H.): from 20% to 80%.
• - Condensation: non condensing.

STANDARDS and REGULATIONS CE

The DMM3 conforms to Directive 89/336/EEC (EMC) and to Directives 73/23/EEC - 93/68/EEC (LVD). It is in compliance with standards IEC 1010-1 430 V for Cat. III and protection level 2 according to IEC 664-664 A (Safety), EN500081-1, EN50082-2 and EN55022 (EMC).

3-YEARS-WARRANTY

For this instrument we provide a warranty period of 3 YEARS.                                        The high quality level of all our new products makes possible to guarantee the working conditions up to 3 years during which the instruments are immediately replaced with a new unit whenever a factory defect comes out.