DETAILED DESCRIPTION

New EM530…..

A new energy analyser connected through 5 A or 333 mV current transformers, or Rogowski coils without external integrator, 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, witha static output (pulse or alarm), a Modbus RTU communication port, or an MBus communication port.

EM530 can be installed in any low- voltage switchboard to monitor energy consumption, main electrical variables, and harmonic distortion. It is compatible with current transformers with 5 A / 333 mV secondary current, as well as Rogowski coils, which the device supports without the need for external integrators or power supply. The device supports systems with rated current up to 10 kA and is suitable for retrofit applications when used with openable transformers like CTA, CTD S, CTV, or ROG4X.

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.

Technical data

•Equivalent to Class 1 (kWh) as defined inEN62053-21 and equivalent to Class 2 (kvarh) as defined in EN62053-23

•Accuracy: ±0.5% RDG (current/voltage)

•Instantaneous variables readout: 3x7 (5+2) DGT

•Energy readout: 11 (8+3) DGT

•Voltage inputs: up to 415 V LL

•Self power supply

•Current inputs: 100mV/kA @50Hz Rogowski coils, up to 2800 A

•System variables: VLL, VLN, VA, W, var, Hz, PF, An

•Single phase variables: VLL, VLN, A, VA, W, var, PF, THD VLL, THD VLN, THD A

•Average calculation (DMD) of active and apparent power (system) and currents (single phase)

•Current and voltage THD (up to 15th harmonic)

•Energy measurements (imported/exported): total kWh, kvarh, kVAh; partial kWh, kvarh, kVAh. total kWh by phase.

•Run hour meters (relevant to both imported/exported energy: 8+2 DGT). Total operating time.

•RS485 Modbus RTU

•Communication data refresh time: 100 ms

•Programmable display and slide show function

•cULus approval

Explanation of additional order codes of the datasheet

• 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.

Note: for each measuring time interval, the individual phase energies with a plus sign are summed up to increase the positive energy meter (kWh+), while the others increase the negative one (kWh-).

• PFC: only the positive totalizer (kWh+) is MID-certified. The negative energy totalizer is available but is notMID-certified.

Note: for each measuring time interval, the energies of the individual phases are summed up; according to the sign of the result, the system increases the positive totalizer (kWh+) or the negative one (kWh-).

• PFD: Bidirectional, total imported active energy (kWh+ TOT) and Total exported active energy (kWh- TOT) are MID certified meters; manufactured in Italy.

Note: for each measuring time interval, the individual phase energies with a plus sign are summed up to increase the positive energy meter (kWh+), while the others increase the negative one (kWh-).

• PFE: Bidirectional, total imported active energy (kWh+ TOT) and Total exported active energy (kWh- TOT) are MID certified meters; manufactured in Italy.

Note: for each measuring time interval, the energies of the individual phases are summed up; according to the sign of the result, the system increases the positive totalizer (kWh+) or the negative one (kWh-).