iRTUe#Q — Advanced Power Quality Analyzer

Ver­sa­tile pow­er qual­i­ty analy­sis and equip­ment mon­i­tor­ing with pow­er­ful com­mu­ni­ca­tion capa­bil­ties by iRTUe#Q
  • High per­for­mance Pow­er Qual­i­ty Analy­sis (PQA) with 3 three-phase cur­rent and volt­age inputs for over cur­rent and oth­er kinds of fault detec­tion

  • High accu­ra­cy mea­sure­ments (fre­quen­cy, phase, I, V, P), data log­ging and fault record­ing
  • Com­pet­i­tive pric­ing for low-volt­age pow­er dis­tri­b­u­tion sys­tems, sub­me­ter­ing and inter­nal ener­gy and elec­tri­cal load monitoring
  • Option­al I/O card with 24 dig­i­tal inputs

  • Ser­i­al (EXP422) to con­nect to iRTUs/iGWs or any oth­er third par­ty mas­ter unit

  • 2 x 100BASE-TX or 2 x 100BASE-FX Eth­er­net ports
  • Sate-of-the-art tech­nol­o­gy for advanced automa­tion func­tions like load shedding
  • Made for smart grids: Mod­bus­R­TU and IEC 61850 GOOSE com­mu­ni­ca­tions

  • Sim­ple inte­gra­tion into any architecture

iRTUe#Q are the pow­er qual­i­ty devices of the iRTUe fam­i­ly, the I/O aux­il­iary equip­ment for iRTU /iGW or third par­ty con­trollers and mas­ter devices.

The iRTUeQ is a high per­for­mance (IEC 61850 GOOSE & Mod­bus ready) pow­er qual­i­ty ana­lyz­er for con­tin­u­ous mea­sure­ments of elec­tri­cal pow­er and pow­er qual­i­ty para­me­ters in three-phase AC grids. It helps to reduce costs and com­plex­i­ty thanks to its easy set-up and ver­sa­tile func­tions. The device is designed in a sim­ple and flex­i­ble way, com­bin­ing mul­ti­ple com­mu­ni­ca­tion options and I/O con­fig­u­ra­tions to ful­fill any appli­ca­tion require­ments and replace sev­er­al devices to save mon­ey and space on the DIN rail. 

iRTUe#Q pow­er qual­i­ty ana­lyz­ers can be con­nect­ed to tra­di­tion­al sen­sors (CT-cur­rent trans­form­ers and PT-pow­er trans­form­ers) or new sen­sors, with inte­grat­ed V/I mea­sure­ment and low volt­age out­put (IEC 60044–7/8), in order to mea­sure, detect and store the data of the received waveforms.

Its 3 volt­age and 3 cur­rent inputs for high-accu­ra­cy, three-phase pow­er qual­i­ty mea­sure­ments in com­pli­ance with IEC 60044–8 as well as 24 dig­i­tal inputs (option­al) allow to col­lect data from oth­er devices in the sub­sta­tion and expand the acqui­si­tion and com­mand capa­bil­i­ties of any mas­ter device.

It can direct­ly com­mu­ni­cate with iRTU & iGW units and oth­er iRTUe I/O mod­ules with its inte­grat­ed ports  (ser­i­al, 2x Eth­er­net), both using Mod­bus RTU or IEC 6180 GOOSE mes­sag­ing with high-pre­ci­sion time syn­chro­niza­tion through NTP or IEEE 1588 (PTP).


Applications & Functions

Power Quality Analyzer & I/O Expansion Unit

  • High-accu­ra­cy 3‑phase measurements
  • 3 Cur­rent Inputs
  • 3 Volt­age  Inputs
  • Fre­quen­cy and Pow­er fac­tor measurements
  • Option­al I/O card configurations
  • EXP-422 ser­i­al connection
  • iRTUeQ2: 3 com­bined inputs, using RJ45 con­nec­tor, for pas­sive smart sen­sors based on IEC 60044–7/8

Features & Functionalities


Mea­sure­ments accord­ing to IEC 60044–8


Con­fig­urable Sag & Swell Alarms


Con­fig­urable Over­cur­rent Alarms




Mod­bus RTU & IEC 61850 GOOSE


High-accu­ra­cy time syn­chro­niza­tion via NTP


Mul­ti­ple con­nec­tion options


Super com­pact DIN-rail mounting

Instantaneous Measurements


Volt­age per phase (V1,V2,V3, residual)


Pos­i­tive & Neg­a­tive Active Pow­ers (W1+, W1‑, W2+, W2‑, W3+, W3-)


Pos­i­tive & Neg­a­tive Active & Reac­tive Energies


Cur­rent per phase (Is1, Is2, Is3, residual)


Total Har­mon­ic Dis­tor­tion (Cur­rent THD)


Volt­age-Cur­rent Phase (cosPhi1,cosPhi2,cosPhi3)


Pos­i­tive & Neg­a­tive Reac­tive Pow­ers (Q1+L, Q1‑L,..)


Pow­er (P1, P2, P3)


Phase & Frequency

Additional Functions provided with iGW/iRTU


COMTRADE file generation


Sequence of Events (SOE, +100k records with inter­nal micro SD card)


High-accu­ra­cy time syn­chro­niza­tion via PTP (IEEE1588) + inter­nal RTC


Pro­to­col con­ver­sion between any sub­sta­tion pro­to­cols and phys­i­cal media


Inter­nal PLC based on IEC 61131–3


Flex­i­ble dig­i­tal and ana­log I/O options


Dig­i­tal Fault Recorder (DFR)


Motors and large elec­tri­cal load monitoring


Data Log­ger, Proces­sor and Converter


Smart Meter Man­age­ment with DLMS


Load Curve pro­cess­ing, cov­er­sion & transfer


Indus­tri­al Sub­sta­tion Automa­tion Con­troller with IEC 61850

iRTUE#Q in Substation Networks

iRTUe#Q are equipped with a ser­i­al (EXP422 port) or dou­ble Eth­er­net port (ST or SC) to con­nect to iRTU/iGW units and oth­er iRTUe I/O mod­ules, both using Mod­bus RTU or IEC 6180 GOOSE mes­sag­ing. iGW/iRTUs allow to inte­grate and com­mu­ni­cate with all kinds of devices, pro­vid­ing pro­to­col con­ver­sion between any sub­sta­tion pro­to­col, includ­ing IEC 61850 and up to (48) dig­i­tal inputs and (24) out­puts as well as (16) ana­log inputs. Paired with an iRTUeQ, they can act as advanced, all-in-one controller/ RTU, pro­vid­ing data log­ging, fault record­ing, load curve con­ver­sions, COMTRADE file gen­er­a­tion and time syn­chro­niza­tion (via PTP).

IEC 61850 based sys­tems are based on soft­ware con­fig­u­ra­tions rather than hard­wired sig­nal paths, mak­ing them more cost-effec­tive, eas­i­ly extend­able and on-demand recon­fig­urable. As GOOSE mes­sages are sent IED-to-IED, they avoid addi­tion­al delays from inter­me­di­ary equip­ment and block­ing sig­nals can be sent faster than in tra­di­tion­al schemes. Fur­ther­more, sig­nals can be sent to all IEDs at once, min­i­miz­ing the oper­at­ing time in any kind of network.

With the ultra fast pro­cess­ing time (P2/P3) of iRTUe units you can take full advan­tage of IEC 61850.  Inte­grate high speed ana­log and dig­i­tal pow­er qual­i­ty mea­sures, as well as relays and oth­er devices through pow­er­ful and direct communications.

iRTUe#Q Communication Network Architecture

Exam­ple schema

Technical Features

Communication Capabilities

The units can car­ry one ser­i­al RS422 port to con­nect to iRTU & iGW devices via Mod­bus­R­TU or two 100 BASE FX/ 100 BASE TX Eth­er­net ports with ST or SC con­nec­tors to use advanced IEC 61850 GOOSE communications.


GOOSE com­mu­ni­ca­tion works with enhanced retrans­mis­sion mech­a­nisms on a publisher/subscriber basis, allow­ing P2P com­mu­ni­ca­tion between iRTUe and IEDs with a pro­cess­ing time under 3ms (per­for­mance class P2).

IEC 61850 GOOSE also fea­tures strong VLAN and pri­or­i­ty tag­ging func­tion­al­i­ties via IEEE 802.1Q to send mes­sages effi­cient­ly across com­plex phys­i­cal net­works. Com­bined with a sub­sta­tion-wide Eth­er­net LAN, it enables flex­i­ble and sophis­ti­cat­ed log­ic schemes for sub­sta­tion pro­tec­tion and automa­tion, such as inter­lock­ing and load shedding. 

Data Logging

The device can act as over cur­rent fault detec­tor (max: 100A) , cre­at­ing cus­tomized alarms trig­gered by any user-defined con­di­tions and thresh­olds, (e.g. sag/swell) eas­i­ly con­fig­ured with the free iConf tool.

iRTUe address­es, in both Mod­bus and GOOSE, can be quick­ly set up using the side microswitches.

Paired with a sub­sta­tion automa­tion controller/ RTU such as an iGW or iRTU, iRTUeQ mod­els allow to process, store and con­vert thou­sands of time-stamped events, data points, wave­forms and load profiles.

Fur­ther, the mea­sure­ments can be con­vert­ed into  user-defined COMTRADE files (sam­pling rate 1,25ms), which can be accessed or trans­ferred via ftp and web services.

Func­tion­ing as a fault recorder, the device can eas­i­ly store 2048 SOE records, which can turn into many more using the inter­nal SD card. 

Simple Configuration

iRTUe address­es, in both Mod­bus and GOOSE, can be eas­i­ly con­fig­ured using the side microswitch­es. For GOOSE, the default mul­ti­cast group is set to zero (mod­i­fi­able with iConf).

Power Quality Measurements

As pow­er qual­i­ty I/O exten­sions of the iRTUe fam­i­ly, iRTUe#Q pro­vide high-speed col­lec­tion and trans­mis­sion of a large num­ber of three-phase pow­er mea­sure­ments and para­me­ters (fre­quen­cies, cur­rents, phas­es etc.).


The Q1 mod­el con­nects to tra­di­tion­al sen­sors such as cur­rent and pow­er trans­form­ers through 3 volt­age and 3 cur­rent inputs: MVSTBR 5.08 6 pins (for cur­rent) and 4 pins (for volt­age) with 0.3% accuracy.


Q2 units con­nect to new sen­sors with inte­grat­ed V/I mea­sure­ments and low volt­age out­puts (IEC 60044–7/8, com­bined inputs via 3 RJ45 connectors).


Digital Inputs

Each input can be defined as input or as a counter and have an indi­vid­u­al­ly con­fig­ured debounce fil­ter. One iRTUe unit can pro­vide up to 48 iso­lat­ed dig­i­tal inputs with a 2.5kVrms iso­la­tion and a 1  ms time­stamp accu­ra­cy. The units come in stan­dard input volt­ages of 24, 48, 125 or 220 Vdc.

ON when Vi>85%Vn
OFF when Vi<60%Vn
Oth­er lev­els upon request.

Standards and Compliance

The diverse back­grounds of our part­ners and clients from all over the world have helped us gath­er state-of-the-art know-how and first­hand expe­ri­ence in a great vari­ety of ener­gy appli­ca­tions. This joined knowl­edge is the foun­da­tion of our opti­mized iRTU/GW fam­i­ly, which has a proven track record of being par­tic­u­lar­ly effec­tive and resis­tant for a diverse range of appli­ca­tions and harsh envi­ron­ments belong­ing to the ener­gy industry.

As a result, the iRTUe meets the require­ments of exten­sive stan­dards, such as IEC61850‑3, IEC60870‑2–1 & IEC60255-26.

Models Overview

• 3 volt­age inputs for 110Vac, using 4 pin 5.08mm ter­mi­nal block con­nec­tors
• 3 cur­rent inputs for 1A cur­rent trans­form­ers, using 6 pin 5.08mm ter­mi­nal block con­nec­tors
• 24 dig­i­tal inputs (option­al)

Com­ing soon: iRTU#Q2
• 3 com­bined inputs, using RJ45 con­nec­tors, for pas­sive smart sen­sors based on IEC 60044–7/8
• 24 dig­i­tal inputs (option­al)


General Characteristics

Pow­er sup­ply  W : wide range, 32 — 250Vdc / 80 — 250Vac (2.5kVrms iso­la­tion)  24 : 19.5–60Vdc (2.5kVrms isolation)
MTBF 177,000h (one hun­dred sev­en­ty sev­en thou­sand hours)

Envi­ron­men­tal Oper­at­ing tem­per­a­ture : ‑25ºC to +70ºC

IEC 60068–2‑1, IEC 60068–2‑2, IEC 60068–2‑3, IEC 60068–2‑14, IEC 60068–2‑30, IEC 60068–2‑38

Vibra­tion & shock test IEC 60068–2‑6, IEC 60068–2‑7
Phys­i­cal exter­nal dimen­sions: 173 x 78.4 x 137 mm (HxWxD)
IP30 enclo­sure with DIN Rail mounting
Con­fig­u­ra­tion sim­ple con­fig­u­ra­tion with iConf tool
CPU Fea­tures 32 bits micro­con­troller @ 40MHz + DSP for sig­nal processing
Pow­er con­sump­tion under 3W

Digital Inputs

Iso­la­tion 2.5 kVrms
Acti­va­tion ON when Vi>85%Vn | OFF when Vi<60%Vn | oth­er lev­els upon request
Con­nec­tors MVSTBR 2,5 9 pins — group­ing dig­i­tal inputs in iso­lat­ed blocks of 8 inputs and one com­mon terminal

Power Quality Measurements

Iso­la­tion 2.5 kVrms
Instan­ta­neous Mea­sure­ments
• Volt­age per phase (V1,V2,V3, resid­ual)
• Cur­rent per phase (Is1, Is2, Is3, resid­ual)
• Pow­er (P1, P2, P3)
• Appar­ent pow­er (Q1, Q2, Q3)
• Volt­age-Cur­rent Phase (cosPhi1,cosPhi2,cosPhi3)
• Pos­i­tive & Neg­a­tive Reac­tive Pow­ers (Q1+L, Q1‑L,…)
• Pos­i­tive & Neg­a­tive Active Pow­ers (W1+, W1‑, W2+, W2‑, W3+, W3-)
• Pos­i­tive & Neg­a­tive Active & Reac­tive Ener­gies
• Fre­quen­cy
• Cur­rent THD

Ana­log to dig­i­tal conversion
16 bits ADC for chan­nel
Sam­pling rate 64 spc (3200sps @ 50Hz) per channel

Stor­able in COMTRADE files trig­gered by user defined alarms with a sam­ple rate of 1,25ms

Communication Features

Ser­i­al (1) RS-422 port to con­nect to iRTU&iGW devices with ModbusRTU
Eth­er­net (2) 10/100BaseTX ports, RJ45 or FX100 fiber optics with ST or SC connectors
Time Syn­chro­niza­tion IEEE 1588 (PTP-Pre­cise Time Pro­to­col) client
Pro­to­cols IEC 61850 GOOSE mes­sag­ing or Mod­bus RTU
IEC 61850 Log­i­cal Nodes GGIO pre­de­fined (future firmware upgrades will allow any SCL file)
Time response under 3ms fol­low­ing the per­for­mance test in IEC 61850 (type 1A class P2)

EMC Standards

IEC 60950–1, IEC 60255–5:2000, EC 60255–22:2000, EN 55022, IEC 61000–6‑4, IEC 61000–6‑5, IEC 61000–4‑2, IEC 61000–4‑3, IEC 61000–4‑4, IEC 61000–4‑5, IEC 61000–4‑6, IEC 61000–4‑8, IEC 61000–4‑9, IEC 61000–4‑10, IEC 61000–4‑12, IEC 61000–4‑16, IEC 61000–4‑17, IEC 61000–4‑18, IEC 61000–4‑29

Meet Some of our Master Units

iGW – For More Complex Projects

The iGW is a pow­er­ful and reli­able sub­sta­tion gate­way, able to run either in stand­alone or redun­dant modes, car­ry­ing 4 ser­i­al ports and an (option­al) embed­ded Eth­er­net switch for 2 addi­tion­al Eth­er­net ports (total of 4).

iRTU – The Gateway with Integrated I/Os

The iRTU is an intel­li­gent and scal­able bay con­troller with inter­nal and con­fig­urable I/O capa­bil­i­ties for direct data acqui­si­tion, pow­er­ful pro­to­col con­ver­sion (incl. IEC 61850), high-pre­ci­sion time­stamp­ing and an option­al embed­ded Eth­er­net switch.

iGWlite – The “Lite” Gateway

The iGWlite comes with 1 Eth­er­net, 1 RS485/RS422 and an option­al RS-232 port (cop­per or fiber) or a 2G/3G/4G modem tak­ing lit­tle space on a DIN-Rail, but still employ­ing the full iGrid pro­to­col suite.


Any questions?

    I have read and accept the Pri­va­cy Pol­i­cy*

    iRTUe – Remote I/O Extensions 

    iGWs, iRTUs and third par­ty mas­ter units can be freely extend­ed by con­nect­ing one or sev­er­al iRTUe.

    They are IEC 61850 (GOOSE) com­pli­ant and come in many con­fig­u­ra­tions such as 48 DI, 16 relays, 16 AI, 24 DI + 8 relays, 24 DI + 8 AI or 8 relays + 8 AI.

    iGW-VM – unlimited control

    The freely scal­able iGW-VM sup­ports all archi­tec­tures using Win­dows or Lin­ux, act­ing as a sub­sta­tion gate­way, bay con­troller, RTU or com­mu­ni­ca­tion front-end for SCADA sys­tems. The iGW-VM is thus the per­fect soft­ware choice for projects with a predetermined/preferred hard­ware or a large grid to cov­er (high num­ber of datapoints).

    iControl SCADA

    High-per­for­mance SCADA for the visu­al­iza­tion and con­trol of sub­sta­tion data. It is able to run either in client/server or stand­alone modes, pro­vid­ing advanced func­tion­al­i­ties such as hot-stand­by redun­dan­cy, auto­mat­ic line col­or­ing, events noti­fi­ca­tion (via e‑mail and sms), SQL log­ging, and reports generation.

    Do you need more information?

    We are hap­py to assist you!


    +34 93 502 79 84

    Mon­day to Friday

    08:00h to 17:00h

    Cen­tral Euro­pean Time

      I have read and accept the Pri­va­cy Pol­i­cy*

      Basic infor­ma­tion about our data protection:

      Insti­tu­tion in charge: IGRID SL. Pur­pos­es of data pro­cess­ing: Cus­tomer con­tact. Archived data loca­tion: Raio­la Net­works SL (UE). Per­son­al data retain peri­od: Until removal request. Rights: You can exer­cise your rights of access, rec­ti­fi­ca­tion, can­cel­la­tion and opposition.