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MT540 and UMT540 Comparisons with Rishabh RIsh Con M+

Make	Rishabh	Iskra
Model	Rish CON M+	MT 540
Input Parameters
System type	Single Phase / 3 phase 3 wire Unbalanced/ 3 phase 4 wire Unbalanced / (U12 I1) 3 Phase Balanced / (U23 I1) 3 Phase Balanced / (U31 I1) 3 Phase Balanced / 3 Phase 3 wire Balanced / 3 Phase 4 wire Balanced	Single Phase / 3 phase 3 wire Unbalanced / 3 phase 4 wire Unbalanced / 3 Phase 3 wire Balanced / 3 Phase 4 wire Balanced
Nominal voltage range (Un)	100 V - 600 VL-L 57.7 V - 346.42 VL-N	100 V - 866 VL-L 57.7 V - 500 VL-N
Max. measured value (cont.) voltage	1.5 X Un continuously	600 VLN ; 1000 VLL
Over voltage	2 X Un for 1 second, repeated 10 times at 10 seconds interval	2 X UN ; 10 s
Voltage circuit Burden	0.3 VA per phase	< U2 / 4.2 M Ω per phase
Nominal current range (ln)	1 A ≤ In ≤ 5 A	0.31 A - 5 A
Max. measured value (cont.) current	2 X In continuously	15 A continuously
Overload Current	20 X In for 1 second, repeated 5 times at 5 seconds interval	20 X IN ; 5 X 1 s
Current circuit Burden	0.3 VA per phase	< I2 X 0.01 Ω per phase
Frequency range	40-70 Hz	16 −400 Hz
Auxiliary power supply range	85V…285 VAC-DC	80…276 VAC / 70…300 VDC 48…77 VAC / 19…70 VDC
Auxiliary supply Burden	10VA	8VA
Output Parameters
Analogue Output Range	-20mA....0....+20mA / 0…20mA / 4…20mA / -10V....0....+10V / 0…10V	-1…0…1mA / -5…0…5mA / -10…0…10mA / -20…0…20mA / -1…0…1V / -10…0…10V
Response Time	300 ms	100 ms
Accuracy Class
Voltage (V), Current (A)	0.2	0.2
Power factor (PF)	0.5	0.1
Frequency (F)	0.2	10mHz
Active Power	0.2	0.2
Reactive Power	0.5	0.2
Apparent Power	0.2	0.2
Active energy	Class 0.5S as per IEC 62053-22	Class 1
Reactive energy	-	Class 2
Mechanical
Dimensions W X H X D	122.5 X 66.5 X 106.5mm	160 X 74 X 124mm
Weight	500 grams	500 grams
Enclosure	Lexan 940 (polycarbonate)	PC/ABS, PC (sliding cover)
Terminals	Conventional Screw type terminal with indirect wire pressure ≤ 4.0 mm² single wire or 2 x 2.5 mm² fine wire	EU style clamp terminals
Programming Parameters
CT / PT(VT) ratio Field-programmable primary and secondary values	PT Primary 100-1200kV LL CT Primary 1A-9999A	PT Primary 0.1-1638.3 kV LL CT Primary 0.1A-1638.3kA
Modbus registers	User programmable	User programmable
Environmental
Protection degree (as per IEC 60529)	IP20 at terminals, IP40 on Housing	IP20 at terminals, IP40 on Housing
Insulation	1min. ( EN 61010-1) 3.3kV RMS, Input versus outer surface 3.3kV RMS, Input versus all other circuits 3.3kV RMS, Auxiliary supply versus outer surface and output 500V RMS, Output versus output versus each other versus outer surface.	Protection class I, 3.3 kVAC RMS 1 min Between coil and contact 4000 VDC Between contacts 1000 VDC
Temperature	-10°C to +55°C (operating) -30°C to +80°C (storage)	-10°C to +55°C (operating) -40°C to +70°C (storage)
Humidity	0....95%RH (Non Condensing)	 93% r.h.
Compliance Standards	EN/IEC 60688 IEC 62053-22 IEC 610101-2010 IEC 61326	EN 61010-1: 2001 EN 60688:1995 / A2: 2001 EN 61326-1:2006 EN 60529:1997/A1:2000 EN 60 068-2-1/ 6/ -27/-30 -2/
Measured Parameters
System Voltage	√	√
Per Phase (L1,L2,L3) Voltage	√	√
Phase to Phase(L12,L23,L31) Voltage	√	√
System Current	√	√
Per Phase (L1,L2,L3) Current	√	√
System Active Power	√	√
System Re-active Power	√	√
System Apparent Power	√	√
Per Phase (L1,L2,L3) Active Power	√	√
Per Phase (L1,L2,L3) Re-active Power	√	√
Per Phase (L1,L2,L3) Apparent Power	√	√
System Current Demand	√	√
System kVA Demand	√	√
System Import kW Demand	√	√
System Export kW Demand	√	√
System Ind. Var Demand	√	√
System Cap. Var Demand	√	√
System Max kVA Demand	√	√
System Max Imp kW Demand	√	√
System Max Exp kW Demand	√	√
System Max Ind Var Demand	√	√
System Max Cap Var Demand	√	√
System Max Current Demand	√	√
Per Phase (L1,L2,L3) Current Demand	√	√
Per Phase (L1,L2,L3) kVA Demand	√	√
Per Phase (L1,L2,L3) Import kW Demand	√	√
Per Phase (L1,L2,L3) Export kW Demand	√	√
Per Phase (L1,L2,L3) Inductive Var Demand	√	√
Per Phase (L1,L2,L3) Capacitive Var Demand	√	√
Per Phase (L1,L2,L3) Max kVA Demand	√	√
Per Phase (L1,L2,L3) Max Import kW Demand	√	√
Per Phase (L1,L2,L3) Max Export kW Demand	√	√
Per Phase (L1,L2,L3) Max Ind Var Demand	√	√
Per Phase (L1,L2,L3) Max Cap Var Demand	√	√
Per Phase (L1,L2,L3) Max Current Demand	√	√
System Power Factor	√	√
Per Phase (L1,L2,L3) Power Factor	√	√
System Phase Angle	√	√
Per Phase (L1,L2,L3) Phase Angle	√	√
Frequency	√	√
RPM	√	-
System Import Active Energy	√	√
System Export Active Energy	√	√
System Ind Reactive Energy	√	√
System Cap Reactive Energy	√	√
System Apparent Energy	√	√
Per Phase (L1,L2,L3) Import Active Energy	√	√
Per Phase (L1,L2,L3) Export Active Energy	√	√
Per Phase (L1,L2,L3) Inductive Reactive Energy	√	√
Per Phase (L1,L2,L3) Capacitive Reactive Energy	√	√
Per Phase (L1, L2, L3) Apparent Energy	√	√
Neutral Current	√	-
System Voltage THD	√	-
Per Phase (L1, L2, L3) Voltage THD	√	-
System Current THD	√	-
Per Phase (L1, L2, L3) Current THD	√	-
Per Phase (L1, L2, L3) Individual Voltage Harmonics	√	-
Per Phase (L1, L2, L3) Individual Current Harmonics	√	-
Run Hour	√	-
On Hour	√	-
Number of Interruptions	√	-
Phase Reversal Indication	√	-
Current Reversal Indication	√	-
Phase Absent Indication	√	-