Data Sheet

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Carlo Gavazzi Controls S.p.A.

EM530

EM530 DS ENG07/07/2021

Energy analyser for three- and two-phase systems

Description

EM530 is an energy analyser connected through

5 A current transformers, for two- and three-phase

systems up to 415 V L-L.

In addition to a digital input, the unit can be equipped,

according to the model, with a static output (pulse

or alarm), a Modbus RTU communication port or

an M-Bus communication port.

Benets

• Enhanced readability. The backlit display ensures

perfect visibility even in low light. The di󰀨erent size of

the digits preceding and following the dot makes the

displayed values easier to read, while the essential style

of the units of measure allows you to readily understand

the available variables.

• Easy browsing. Page conguration and browsing

are very intuitive, thanks to the user interface with 3

mechanical keys. The slideshow function automatically

displays the desired measurements in sequence, without

having to use the keyboard; the page lter allows you to

hide the unnecessary information.

• Quick conguration. The conguration wizard which

runs when the system is started up for the rst time allows

you to commission the unit without errors in a matter of

seconds. The UCS conguration software is available for

download free of charge.

• Accurate measuring. EM530 complies with the

precision international standard IEC/EN62053-21, and

with the performance requirements (power and active

energy) set out by IEC/EN61557-12

• Fiscal metrology. The sliding terminal caps (patent

application pending in EU, US, CA, AU), can be sealed

to prevent any tampering with the connections, allowing

the unit, thanks to the MID certication, to perform

measurements for scal purposes and a reinforced

protection toward the power terminals.

• Flexible installation. It can be installed in two-phase,

three-phase with neutral, three-phase without neutral,

and wild-leg three-phase low-voltage systems.

Applications

EM530 can be installed in any low-voltage switchboard, to monitor the energy consumption, the main electrical

variables and the harmonic distortion. Compatible with any current transformer with 5 A secondary current, it

can be installed in systems with rated current up to 10 kA, even in retrot applications if used with openable

transformers like CTA or CTD S.

If used to monitor a single machine, it provides all the main electrical variables to identify any possible

malfunction in its early stage and can correlate the energy consumption with the hours of operation, to plan

maintenance and prevent failures. The partial meter reset function, easily implementable by means of a digital

input, allows you to monitor each individual machine cycle.

The MID-certied version can be used for scal metrology and can be installed in residential or commercial

buildings to split the costs among the di󰀨erent units, or as a component of machines or equipment requiring

measurement certication.

Thanks to the measurement refresh time and to the high resolution of the variables available through a Modbus

RTU communication module, it can also be used as data source for control actions, such as avoiding feeding

energy into the electricity grid in a photovoltaic joint installation with energy storage.

In combination with UWP (an energy monitoring and control gateway manufactured by Carlo Gavazzi), it

allows you to build a scalable and exible system to monitor the energy e󰀩ciency of buildings and equipment.

Summary of content (15 pages)

PAGE 1
EM530 Energy analyser for three- and two-phase systems Benefits Description EM530 is an energy analyser connected through 5 A current transformers, for two- and three-phase systems up to 415 V L-L. In addition to a digital input, the unit can be equipped, according to the model, with a static output (pulse or alarm), a Modbus RTU communication port or an M-Bus communication port. • Enhanced readability. The backlit display ensures perfect visibility even in low light.
PAGE 2
EM530 Main functions • • • • • • • Measure active, reactive and apparent energy Measure the main electrical variables Measure the load run hours and of the analyser Measure the total harmonic distortion (THD) of current and voltages Transmit data to other systems through Modbus RTU or M-Bus Manage a digital output for pulses or alarm transmission Visualize the measured variables on the display Main features • • • • • • • • • • • • System and phase variables (V L-L, V L-N, A, W/var, VA, PF, Hz) Display
PAGE 3
EM530 Structure A F B 7 8 9 10 11 12 C G 7 D 8 9 1 0 11 1 2 F E Fig. 1 Front Area A B C D E F G Description Voltage inputs Display LED Browsing and configuration buttons Digital input, digital output and communication connections MID seal housings Current inputs A Fig. 2 Back Area A Description DIN rail mounting bracket 07/07/2021 EM530 DS ENG Carlo Gavazzi Controls S.p.A.
PAGE 4
EM530 Features General Material Protection degree Terminals Overvoltage category Pollution degree Mounting Weight Dimensions Housing: PBT Transparent cover: polycarbonate Front: IP40 Terminals: IP20 Voltage inputs: min: 0.2 mm2, max: 2.5 mm2, 0.45 Nm max Current inputs: min: 0.2 mm2, max: 2.5 mm2, 0.45 Nm max Inputs, outputs and communication: min: 0.2 mm2, max: 1.5 mm2, 0.4 Nm max Cat.
PAGE 5
EM530 Environmental specifications Operating temperature Storage temperature Electromechanical environmental condition Mechanical environmental condition From -25 to +55 °C/from -13 to +131 °F From -25 to +70 °C/from -13 to 158 °F E2 M2 NOTE: R.H. < 90 % non-condensing @ 40 °C / 104 °F.
PAGE 6
EM530 Electrical specifications Electrical system Two-phase (3-wire) Three-phase with neutral (4-wire) Managed electrical system Three-phase without neutral (3-wire) Wild leg system (three-phase, four-wire delta) Three-phase with neutral (4-wire) MID managed electrical system Three-phase without neutral (3-wire) (ARON) Voltage inputs - MID Voltage connection Rated voltage L-N Rated voltage L-L Voltage tolerance Overload Input impedance Frequency Voltage inputs - Non MID models Voltage connection Rated
PAGE 7
EM530 Current inputs Current connection CT transformation ratio Rated current (In) Minimum current (lmin) Maximum current (lmax) Start-up current (lst) Overload Input impedance Crest factor Measurement type Via CT 2000 max 5A 0.05 A 6A 10 mA For 500 ms: 20 Imax (120 A) < 0.9 VA 3 by means of internal shunts Power supply Type Consumption Frequency Self power supply < 1.3 W/2.
PAGE 8
EM530 Electrical variable Voltage L-N Voltage L-L Current DMD DMD MAX Neutral current Active power DMD DMD MAX Apparent power DMD DMD MAX Reactive power Power factor Frequency THD Current* THD Voltage L-N* THD Voltage L-L* Unit V V A A A A W W W VA VA VA Var PF Hz THD A % THD L-N % THD L-L % System ● ● ● ● ● ● ● ● ● ● ● ● ● - Phase ● ● ● ● ● ● ● ● ● ● ● ● * Up to 15th harmonic NOTE: the available variables depend on the type of system set.
PAGE 9
EM530 Integration time = 1 hour +kWh=(+2+2-3)x1h=(+1)x1h=1 kWh -kWh=0 kWh Measurement accuracy Current From 0.05 In to Imax From 0.01 In to 0.05 In Phase-phase voltage From Un min -20% to Un max +15% Phase-neutral voltage From Un min -20% to Un max +15% Active and apparent power From 0.05 In to Imax (PF=1) From 0.01 In to 0.05 In (PF=1) From 0.1 In to Imax (PF=0.5L 0.8C) From 0.02 In to 0.1 In (PF=0.5L - 0.8C) Active energy Reactive energy Reactive power From 0.1 In to Imax (sinϕ=0.5L - 0.5C) From 0.
PAGE 10
EM530 Measurement resolution Variable Energy Single phase and tariff energy Power Current* Voltage Frequency THD Power factor Display resolution Resolution by serial communication 0.001 kWh/kvarh/kVAh 0.01 kWh 0.001 kWh 0.01 kW/kvar/kVA 0.1 W/var/VA 0.01 A 0.001 A 0.1 V 0.01 Hz 0.001 Hz 0.01 % 0.01 0.
PAGE 11
EM530 Digital outputs/inputs Digital inputs Connection type Number of inputs Type Function Features Configuration parameters Configuration mode Screw terminals 1 Free contact Remote status Tariff management Partial meter start/pause Partial meter reset Open contact voltage: 5 Vdc +/- 5% Closed contact voltage: 5 mA max Input impedance: 11.
PAGE 12
EM530 Digital outputs Digital output Connection type Maximum number of outputs Type Function Features Configuration parameters Configuration mode Screw terminals 1 Opto-mosfet Pulse output or alarm output VON 2.5 V ac/dc, max 100 mA VOFF 42 V ac/dc Output function (pulse/alarm) Pulse weight (from 0.
PAGE 13
EM530 Connection Diagrams Fig. 3 Three-phase with neutral (4-wire). MID Fig. 4 Three-phase without neutral (3-wire) Fig. 5 Three-phase without neutral (3-wire). MID Fig. 6 Two-phase system with neutral (3-wire) 07/07/2021 EM530 DS ENG Carlo Gavazzi Controls S.p.A.
PAGE 14
EM530 Digital outputs/inputs 7 8 9 10 11 12 7 8 9 10 11 12 Fig. 7 Output Fig. 8 Input Communication 7 8 9 10 11 12 7 8 9 10 11 12 M-Bus master B+ A- GND Fig. 9 M-Bus 07/07/2021 EM530 DS ENG Fig. 10 RS485 port 7 8 9 10 11 12 B+ A- GND Fig. 11 Last device on RS485 Carlo Gavazzi Controls S.p.A.
PAGE 15
EM530 References Order code EM530 DIN AV5 3X Enter the code option instead of Code Options Description EM530 DIN AV5 3X O1 Digital output S1 RS485 Modbus RTU M1 M-Bus X Non MID models PFA MID models (3P, 3P.n) PFB MID models (3P, 3P.n) PFC MID models (3P, 3P.n) • PFA: Easy connection, the total energy totalizer (kWh+) is certified according to MID; • PFB: only the total positive totalizer (kWh+) is certified according to MID. The negative energy totalizer is available but not certified according to MID.