- Vibration Monitoring
- PLC & I/O Cards
- Industrial Communications
- Automation Accessories
- Controllers & Data Acquisition
- AC Drives
- Isolator & Barrier
- Industrial Computers
- Encoders
- Automation Software
- Safety Switches & Guard Locking
- HMI Displays
- Motor Soft Starters
- Servo Drives
- CCTV & Security
- Robotics
- Machine Vision
- Pneumatic Cylinders
Brand: Carlo Gavazzi
Carlo Gavazzi EM340DINAV23XS1X Three-Phase Energy Meter RS485
Description
A 65 A direct-connection three-phase meter in three DIN modules
The Carlo Gavazzi EM340DINAV23XS1X is the standard (non-MID) RS485 version of the EM340 three-phase energy meter. It measures up to 65 A directly, without current transformers, on three-phase systems from 208 to 400 V line to line, and is only three DIN modules wide (54 mm). A backlit LCD with three rows of eight digits and an integrated touch keypad shows energy and electrical variables.
The meter is aimed at cost allocation, sub-metering of tenants or production lines, and monitoring of motor feeders, pumps and small distribution boards. Active energy is class 1 (EN 62053-21) and class B (EN 50470-3), reactive energy is class 2, and current and voltage accuracy is +/-0.5% of reading. The unit is self powered from the measured voltage, so no separate auxiliary supply is needed.
Technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / series | Carlo Gavazzi, EM340 |
| Model / ordering key | EM340-DIN AV2 3 X S1 X (EM340DINAV23XS1X) |
| Range code AV2 | 208 to 400 V AC line to line, 5(65) A, direct connection |
| System 3 | 3-phase, 3 or 4 wire; 2-phase 3 wire |
| Power supply X | Self powered: -20% +20% of rated measuring voltage, 45 to 65 Hz; consumption 1 W / 10 VA max. |
| Output S1 | RS485 Modbus RTU port (O1 pulse output and M1 M-bus versions also exist) |
| Active energy accuracy | Class 1 (EN 62053-21); class B (EN 50470-3) |
| Reactive energy accuracy | Class 2 (EN 62053-23) |
| Current / voltage accuracy | +/-0.5% of reading; phase-phase voltage +/-1% |
| Current range | Imin 0.25 A, Ib 5 A, Imax 65 A; continuous overload 65 A at 50 Hz |
| Measured values | kWh and kvarh imported/exported, kWh by two tariffs, kWh per phase; kW, kvar, kVA, VLL, VLN, A, PF, Hz, kW demand and demand peak |
| Display | Backlit LCD, 3 rows of 8 digits; touch keys (down, enter, up); energy 8 digits, variables 4 digits |
| Sampling rate | 4096 samples/s at 50 or 60 Hz |
| Digital input | 1 free-of-voltage contact for tariff management |
| Modbus RS485 | Modbus RTU slave; 9.6 to 115.2 kbaud; address 1 to 247; 50 words per read |
| Wiring checks | Wrong connection detection, phase sequence and current direction indication |
| Operating temperature (X option) | -25 to +65 C indoor, R.H. 0 to 90% non-condensing at 40 C |
| Storage temperature | -30 to +80 C |
| Insulation / overvoltage | 4000 Vac for 1 minute; overvoltage category III; utilisation category UC2 |
| Connection terminals | Measuring inputs 2.5 to 16 mm2 (2.8 Nm); other terminals 1.5 mm2 |
| Housing | Noryl UL 94 V-0, 54 x 90 x 63 mm (W x H x D), 3 DIN modules; IP51 front, IP20 terminals |
| Weight | Approx. 240 g (packing included) |
| Compliance | EN 62052-11, EN 62053-21, EN 50470-3; CE; MID only for PF-option versions |
Choosing between EM340 versions
The type code selects the communication and certification. The S1 output used here is an RS485 Modbus RTU port, O1 is an open-collector pulse output and M1 is an M-bus port. Versions with the PF option are certified to the MID directive (module B and D, class B, annex V MI003) and can be used for fiscal or legal metrology; the code on this page has the X option, so it is not MID certified and should not be used for legal metrology. Check the how-to-order table before quoting a different version.
The datasheet explains the A and B measurement modes for MID versions: A integrates power always, whether imported or exported, while B counts only positive energy. In standard X versions the measurement menu can be set to A or B, which determines whether energy from a wrongly connected current direction is added to the import total.
Installation and selection points
Because the meter measures up to 65 A directly, the load wires pass through the meter terminals, so confirm that the conductor size (2.5 to 16 mm2) and a suitable short-circuit protective device are in place. For loads above 65 A the EM340 direct-connection range stops, and a CT-operated analyzer is needed. The Modbus port supports up to 247 devices on one bus, with a data refresh time of 1 second, which suits energy management systems and SCADA gateways. Allow for the DIN rail space (3 modules) and ventilation in warm panels.
Documents and quotation
The attached EM340 datasheet gives the full ordering key, accuracy tables, Modbus and M-bus specifications, display pages and dimensions. When requesting a price for the EM340DINAV23XS1X, send the quantity, the system voltage, the maximum current per feeder and the communication needed. See also Automation Accessories and the Carlo Gavazzi EM540 three-phase energy analyzer, which is used with current transformers.
Datasheets & Documents
- Datasheet Carlo Gavazzi EM340 datasheet (EN) Download
Reviews (0)
About brand
Carlo Gavazzi is an international group that designs, manufactures and markets electronic control components for building and industrial automation. The company was founded in Milan in 1931, and the publicly quoted holding company is headquartered in Steinhausen, Switzerland. Seven Star LLC, an independent supplier in Muscat, lists Carlo Gavazzi sensors, solid state contactors, energy meters and monitoring relays for panels and machines.
Carlo Gavazzi product families
The portfolio published by the group covers sensors, solid state relays, energy meters and analyzers, monitoring relays, soft starters, timers, power supplies and safety devices. Each family has a datasheet with ordering keys, ratings and dimensions, so an exact part number can be checked before ordering.
Ordering Carlo Gavazzi products: what we need
Send the complete part number, the quantity, the supply or load voltage and current, the mounting style and any approvals needed. For energy meters add the system type and communication port, and for solid state relays add the load type and the ambient temperature at the panel.
Related products
Frequently Asked Questions
Is this version MID certified?
No. The X option is not MID certified; only versions with the PF option are.
What is the maximum direct current?
65 A per phase, with a 5 A base current and 0.25 A minimum.
What communication does it have?
An RS485 port with Modbus RTU slave, addresses 1 to 247 and 9.6 to 115.2 kbaud.
How is it powered?
It is self powered from the measured voltage of 208 to 400 V line to line, -20% to +20%.
How wide is it?
Three DIN modules, 54 mm, with a 90 mm height and 63 mm depth.
Reviews
There are no reviews yet.