The smart energy meter EM737 series is a three phase energy meter. It does not require
special mechanical or electrical tools for its installation. Mounting position ( with any angle
of tilt) has no effect on the measurement function of the meter. Furthermore, it is easy to
program.
Features + Benefits
– Three phase metering
– Standard DIN rail Format (DIN43880)
– EN50470‐3 Class B.
– Import & Export active energy
– Import & Export reactive energy
– Instant Volt, Amp, Power factor, Frequency, Active power, Reactive power, Apparent
power
– Isolated pulse output and IR (DIN43864)
– LCD display, 6 integer, 2 decimals
– Large clear backlight display
– Internal transformer
– Direct metering up to 100A
– Optional single‐phase model
– RS485 communication port, Modbus protocol
– IR port
– Program by button on the nameplate
– Memory back‐up (EEprom)
– 7 DIN modules
– MID approval
– The meter is intended to be installed in a Mechanical Environment ‘M1’, with Shock
and Vibrations of low significance, as per 2004/22/EC Directive and should be installed
in Electromagnetic Environment ‘E2’, as per 2004/22/EC Directive.
Applications
– Residential or Commercial Buildings metering and submetering
– District heating / cooling
– Energy Management
– Green Energy Management
– HVAC
Specifications
1.0 Energy Meter Performance Criteria
| Operating humidity | ≤ 75% |
| Storage humidity | ≤ 95% |
| Limit range of operating temperature | ‐25°C ‐ +55°C(3K6) |
| Limit range for storage temperature | ‐25°C ‐ +55°C(1K4) |
| Humidity | 75% yearly average,95% on 30 days/year |
| International standard | EN50470‐3 &IEC62053‐21 |
| Accuracy class | Class B |
| Protection against penetration of dust and water | IP51 |
| Insulating encased meter protective class |  |
| Connection area main terminals | Indoor meter |
| Default terminal | Flexible 1×mm2 0‐16mm2 |
| Additional terminal | Flexible 1×mm2 0‐2.5mm2 |
2.0 Energy Meter Specifications |
|
| Direct Connected Meter | |
| Voltage(v) | 3 x 230/400V |
| Operational voltage | ±70%Un |
| Current(A) | |
| ‐ Iref | 10A |
| ‐Itr | 1A |
| ‐Imax | 100A |
| ‐Imin | 0.5A |
| ‐Ist | 40mA |
| Power consumption of current circuits(VA) | < 0.01 |
| Power consumption of voltage circuits(W) | < 1.3W |
| General data Frequency | 50Hz |
| Memory back‐up | EEprom |
| Environment resistance | heat and fire |
| Terminal | 960 |
| Cover | 650 |
| upper | ABS+PC |
| lower | ABS+PC |
| Pulse output | |
| Pulse width | 80ms |
| Pulse constant | 400(imp/kWh) |
| LED constant | 400 |
| Width | 126mm |
| Height | 104.5 |
| Depth | 60mm |
3.0 Energy Meter Dimensions and Sealing Points
EM737 Smart Electric Energy Meter – Sealing Points
4.0 Smart Energy Meter – Wiring Diagram
Note: the following types of wiring diagrams show the energy meter,
include terminals for pulse output and the communication interface
RS‑485.However,depending on the ordering number of the energy meter only some
terminals of the energy meters are involved.
5.0 Smart Energy Meter – LCD Reading Angle
The LCD display angle is readable up to 45 degree.
Brochure
Coming Soon