Official DistributorSKU
MPN
EEM-MA771-R
Weight
0.533 kg
This product is Not Cancellable/Not Returnable
Series EEM-MA
EEM-MA771-R - Measuring instrument
Multi-functional energy measuring device with direct Rogowski connection and integrated Modbus RTU/TCP interface for measuring electrical parameters in low-voltage installations up to 690 V. (phoenixcontact.com/empro-help)
Technical Specifications
Product properties
| Product family | EMpro |
Electrical properties
| Maximum power dissipation for nominal condition | 10 VA |
| Mains type | 3-phase (3 or 4-conductor), 2-phase (2-conductor), and single-phase (1-conductor) |
Electrical isolation
| Test voltage | 4 kV AC (50 Hz, 60 s) |
| Pollution degree | 2 |
Electrical isolation Housing against all potentials IEC 61010-1
| Standards/regulations | IEC 61010-1 |
| Overvoltage category | III (300 V AC) |
| Overvoltage category | II (600 V AC) |
| Insulation | Reinforced insulation |
Electrical isolation Supply against all other potentials IEC 61010-1
| Standards/regulations | IEC 61010-1 |
| Overvoltage category | III (300 V AC) |
| Overvoltage category | II (600 V AC) |
| Insulation | Reinforced insulation |
Electrical isolation Voltage measurement input against all other potentials IEC 61010-1
| Standards/regulations | IEC 61010-1 |
| Measuring category | III (300 V AC) |
| Measuring category | II (600 V AC) |
| Insulation | Reinforced insulation |
Electrical isolation Digital I/Os
| Insulation | Functional insulation |
Electrical isolation Communication interface
| Insulation | Functional insulation |
Supply
| Supply Voltage Range | 100 V AC ... 400 V AC (±20 %) |
| Supply Voltage Range | 150 V DC ... 250 V DC (±20 %) |
| Power consumption | ≤ 4 W |
| Nominal frequency | 50 Hz ... 60 Hz (AC sine) |
General
| Measuring Principle | True r.m.s. value measurement |
| Measured value | AC sine (50 Hz/60 Hz) |
| Acquisition of harmonics | up to 63rd harmonic |
| Description of the input | Digital input in accordance with IEC/EN 61131-2 (type 3) |
| Number | 1 |
| Voltage input signal | 24 V DC |
| Voltage input signal | 0 V DC ... 30 V DC |
| Current Input Signal | 2 mA ... 15 mA |
| Protection | 250 mA (fast-blow) |
Measurement: Voltage
| Input name | Voltage measuring input V1, V2, V3 |
| Input voltage range direct | 35 V AC ... 690 V AC (Phase/Phase) |
| Input voltage range direct | 20 V AC ... 400 V AC (Phase/neutral conductor) |
| Input voltage range via external transformers | 60 V AC ... 2000000 V AC (primary) |
| Input voltage range via external transformers | 60 V AC ... 400 V AC (secondary) |
| Surge voltage capacity | 760 V AC (Phase/Phase) |
| Precision | 0.2 % |
| Power consumption | < 2 VA |
Measurement: Current
| Input name | Current measurement RC1, RC2, RC3 |
| Input Current | ≤ 400 A (Measurement level 1) |
| Input Current | ≤ 4000 A (Measurement level 2) |
| Input measuring range voltage | 500 µV ... 400 mV (1000 A) |
| Response threshold from measuring range nominal value | 5 A |
| Operate threshold | 500 µV (5 A) |
| Precision | 0.5 % |
| Secondary Current | ≤ 500 mV (Imax) |
Measurement: Power
| Precision | 1 % |
| Real energy (IEC 62053-21) | Class 1 |
| Reactive power (IEC 62053-23) | Class 2 |
Output data
| Output description | Digital output in accordance with IEC/EN 61131-2 (type 3) |
| Number | 1 |
| Current Output Signal | ≤ 100 mA |
| Voltage output signal | 24 V DC |
| Protection | 250 mA (fast-blow) |
Current / voltage / supply
| Connection Method | Screw connection |
| Stripping length | 8 mm |
| Screw thread | M3 |
| Conductor cross section rigid | 0.2 mm² ... 6 mm² |
| Conductor cross section flexible | 0.2 mm² ... 4 mm² |
| Conductor cross section AWG | 24 ... 10 |
| Tightening torque | 0.5 Nm ... 0.6 Nm |
Digital I/O / communication
| Connection Method | Screw connection |
| Stripping length | 7 mm |
| Screw thread | M3 |
| Conductor cross section rigid | 0.14 mm² ... 2.5 mm² |
| Conductor cross section flexible | 0.14 mm² ... 1.5 mm² |
| Conductor cross section AWG | 26 ... 14 |
| Tightening torque | 0.5 Nm ... 0.6 Nm |
RS-485
| Connection Method | Screw connection |
| Stripping length | 7 mm |
| Screw thread | M3 |
| Conductor cross section rigid | 0.2 mm² ... 2.5 mm² |
| Conductor cross section flexible | 0.2 mm² ... 2.5 mm² |
| Conductor cross section AWG | 24 ... 12 |
| Tightening torque | 0.5 Nm ... 0.6 Nm |
Data: Network interface
| Communication Protocol | Modbus/TCP |
| Communication Protocol | REST |
| Connection Method | RJ45 |
| Communication Protocol | Modbus/RTU |
| Communication standard | RS-485 |
| Connection Method | Screw connection |
| Transmission speed range | 2.4 kbps ... 115.2 kbps |
| Resistance | 120 Ω (integrated) |
Dimensions
| Width | 96 mm |
| Height | 96 mm |
| Depth | 58 mm |
Material specifications
| Color | gray (RAL 7042) |
Ambient conditions
| Degree of protection (Housing) | IP20 (Housing) |
| Degree of protection (Display) | IP54 (Display (+ EEM-MA-IP)) |
| Ambient Temperature (Operation) | -25 °C ... 70 °C |
| Ambient temperature (storage/transport) | -30 °C ... 80 °C |
| Altitude | ≤ 2000 m |
| Max. permissible relative humidity (operation) | ≤ 95 % (non-condensing) |
CE
| Certificate | CE-compliant |
UKCA
| Certificate | UKCA-compliant |
UL, USA/Canada
| Identification | UL/C-UL Listed UL 61010-1 |
UL data
| Operating mode | Indoor use |
| Operating mode | Indoor use |
Mounting
| Mounting Type | Panel mount |
| Mounting Position | Front panel installation, horizontal |
Accessories
2904891 - 450 mm long Rogowski coil. The measuring coil diameter when installed is 140 mm. The Rogowski coil is used for AC current measurement for busbars and power lines.- 2904892 - 600 mm long Rogowski coil. The measuring coil diameter when installed is 190 mm. The Rogowski coil is used for AC current measurement for busbars and power lines.
2904895 - The optional holding device ensures the Rogowski coil is securely seated on busbars with a thickness of 10 ... 15 mm. During installation, the coil housing is pushed onto the flange of the holding device and snaps in automatically.- 2910322 - 300 mm long Rogowski coil. The measuring coil diameter when installed is 95 mm. The Rogowski coil is used for AC current measurement for busbars and power lines.
- 2910323 - 300 mm long Rogowski coil. The measuring coil diameter when installed is 95 mm. The Rogowski coil is used for AC current measurement for busbars and power lines.
- 2910324 - 600 mm long Rogowski coil. The measuring coil diameter when installed is 190 mm. The Rogowski coil is used for AC current measurement for busbars and power lines.
Why Proax for Phoenix Contact 2908285?
Proax is an authorized distributor of Phoenix Contact 2908285 and one of Phoenix Contact's largest distributors in North America. Our highly skilled in-house technical team is ready to assist with any technical needs.
Have a question in mind? to help you get the right product as quickly as possible for your project. We're always here to help!
Short Lead Time
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60+ Years Experience
Additional Information
| Pack Size | 1 |
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