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The instrument measures line and phase voltages, currents, active, reactive and apparent powers,
power factors, THD and harmonics of voltages and currents, as well as frequency in single-phase and
three-phase low, medium and high voltage power systems.
Built-in electricity meter measures electric energy in four quadrants (both active and reactive
energies), as well maximum active power demand.
The instrument further allows informative measurement of temperatures within a switchboard cabinet
using an inbuilt temperature sensor.
Besides actual values, average values during preset time window are evaluated too. Maximum and
minimum values of them are registered.
The instrument feature three voltage and three fully isolated current measuring inputs.
Nominal range of the voltage inputs can be in range from 57.7/100 up to 400/690 V
The current inputs are designed for indirect measurement only - they must be connected via external
current transformers. The models with current-type inputs are available as either the „X/5A", i.e. with 5
A
nominal range (for standard CTs), or the „X/100mA" with nominal range of 0.1 A
AC
models are determined either for CTs with output nominal voltage of 333 millivolts or for flexible
current sensors (Rogowski coils) with embedded integrator and appropriate output voltage. Such
models are equipped with auxiliary power supply of 5V for the sensors.
The instrument can be optionally equipped with two relays with programmable function or solid-state
outputs that can be used as electricity meter impulse outputs and one digital input for general state
monitoring.
Power supply of standard instrument models has universal range 85 ÷ 275 V
Optional power supply range is 12 ÷ 48 V
The instruments can be equipped with an RS 485, Ethernet or M-Bus communication interface. Then
the ENVIS software allows remotely viewing data measured. For custom design systems, the Modbus
communication protocol can be used too.
Dr. M. Horákové 559, 460 06 Liberec 7, Czech Republic
tel. +420 485 130 314, fax +420 482 736 896
email : kmb@kmb.cz, internet : www.kmb.cz
SML 133
Multifunctional Meter
Operating Manual
Firmware 2.0.32
DC.
5 / 2016
KMB systems, s.r.o.
,optionally.
AC
. The „X/333mV"
AC
or 80 ÷ 350 V
AC
DC.
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Table of Contents
Related Manuals for KMB SML 133 Series
Summary of Contents for KMB SML 133 Series
- Page 1 KMB systems, s.r.o. Dr. M. Horákové 559, 460 06 Liberec 7, Czech Republic tel. +420 485 130 314, fax +420 482 736 896 email : kmb@kmb.cz, internet : www.kmb.cz SML 133 Multifunctional Meter Operating Manual Firmware 2.0.32 The instrument measures line and phase voltages, currents, active, reactive and apparent powers, power factors, THD and harmonics of voltages and currents, as well as frequency in single-phase and three-phase low, medium and high voltage power systems.
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Page 2: Putting In Operation
SML133 Operating Manual 1. Putting in Operation 1.1 Instrument Connection 1.1.1 Physical The SML 133 instrument is built in a plastic box to be installed in a distribution board panel. The instrument’s position must be fixed with locks. Natural air circulation should be provided inside the distribution board cabinet, and in the instrument’s neighbourhood, especially underneath the instrument, no other instrumentation that is source of heat should be installed or the temperature value measured may be false. -
Page 3: Basic Operation
SML133 Operating Manual 1.1.4.1 Current Type Current Inputs Instruments ( Models „X/5A“, „X/100mA“ ) The current signals from 5A or 1A (or 0.1A for the „X/100mA“ models) instrument current transformers must be connected to the terminal pairs I11, I12, I21, I22, I31, I32 (No. 1 ÷ 6). A connection cable maximum cross section area is 2.5 mm 1.1.4.2 Voltage Type Current Inputs Instruments ( Models „X/333mV“... - Page 4 SML133 Operating Manual 3. line 1 : - current transformer/range specification line 2 : nominal primary current [A] line 3 : nominal secondary current [A] 4. line 1 : - nominal frequency and voltage line 2 : nominal frequency line 3 : nominal voltage Then the instrument starts display actual measured values.
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Page 5: Measured Data
SML133 Operating Manual The summary of all instrument parameters is stated in the table below. Their description is stated in following chapters. 1.2.2 Measured Data The instrument starts display actual measured values on power-up. The screen that was selected before the last powerdown is displayed. You can navigate through all of measured and evaluated values with buttons as shown on the Measured Data Navigation Chart below. - Page 6 SML133 Operating Manual SML133 Measured Data Branch Navigation Chart → → → Actual AvgMax AvgMin line-to-line voltages line-to-neutral similarly voltages → Avg → AvgMax → AvgMin phase currents Fundamental Full Spectrum Values Branch phase power Harmonic Values PF, ΣPF, P, ΣP, Q, ΣQ factors Branch ΣPF...
- Page 7 SML133 Operating Manual SML133 Fundamental Harmonic Values Branch → → → Actual AvgMax AvgMin cos (tan,φ) phase power ( actual values only ) factors Σcos(tan,φ) ( actual values only ) 3-phase power factor active phase powers ΣPfh active 3-phase power reactive phase powers ΣQfh...
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Page 8: Electricity Meter
SML133 Operating Manual a symbol , which indicates the power factor character • For detailed information see chapter Power, Power Factor and Unbalance Evaluation Method below. At the following figures there are examples of three-phase fundamental power factor presentations : Fundamental Harmonic Power Factor Formats the left figure : Σcos φ... - Page 9 SML133 Operating Manual 1.2.2.5.1 “4E+Pmax” Display Mode In this mode, first four windows contain three-phase energies of four-quadrants : ΣE … three-phase imported active energy, indicated with Σ - kWh (or MWh or kMWh = • GWh) ΣE … three-phase exported active energy, indicated with Σ - kWh and preceeding ― sign •...
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Page 10: Instrument Parameters
SML133 Operating Manual ΣE … three-phase apparent energy registered during the ΣE value was positive; indicated • with Σ - kVAh ΣE … three-phase apparent energy registered during the ΣE value was negative; indicated • with Σ - kVAh and preceeding ― sign The three-phase active power demand ΣP is not displayed in this mode. - Page 11 SML133 Operating Manual SML 133 Instrument Parameters parameter group range default comment 00 lock LOC / OPN see Instrument Setup Locking / Unlocking 01 CT – ratio, multiplier 5 / 5 A secondary current selection screen 1 : row 2 : nominal primary current primary : 1A ÷...
- Page 12 SML133 Operating Manual 1.2.4.1 Main and Side Branch For better orientation, some of parameters Arrangement of Parameters in Branches (parameter group No. 01, 04, 15) are placed in so called side branches. To enter into a side branch, push . The dash in the front of the parameter number skips down to the second row indicating the side branch position.
- Page 13 SML133 Operating Manual L O C Press the and scroll to parameter group 00 with arrow keys – value displayed. Press the and hold it down until the value is replaced with flashing number between 0 0 0 9 9 9 3 4 5 .
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Page 14: Detailed Operation Description
SML133 Operating Manual 2. Detailed Operation Description 2.1 Current and Voltage Multiplier To get better precision when using overweighted CTs, you can apply more windings of measured wire through the transformer. Then you must set so called multiplier. The current multiplier parameter is placed in side branch of the P.01 parameter group and it is marked as “MUL”. - Page 15 SML133 Operating Manual ∑ Current (effective value) : where : i …..sample index n ... number of samples per measurement cycle ( 1280 / 1152 ) , Ii … sampled values of voltage and current The data for the longer measurements are aggregated from these measurement cycles. Measured phase voltages U to U correspond to the potential of terminals VOLTAGE / U1 to U3...
- Page 16 SML133 Operating Manual PF = Power factor : Σ Three-phase active power: : Σ Three-phase reactive power : Σ Three-phase apparent power : Σ Σ Σ Three-phase power factor : Fundamental harmonic component quantities : cos ϕ ∆ tan ϕ ∆ Fundamental harmonic power factor : , Δφ...
- Page 17 SML133 Operating Manual For outright specification of the quadrant, the power factor of the fundamental harmonic component – cos φ – is expressed according to the graph with two attributes : a sign ( + or - ), which indicates polarity of active power •...
- Page 18 SML133 Operating Manual shorter, partial averages of a quantity are buffered each second and new average values are updated from the preset averaging period each second. If the preset average period is longer than 1 minute, partial averages for longer duration are buffered and the average values are updated less frequently ( for example, if the preset average period is 15 minutes, partial averages are buffered each 15 seconds and average values are updated with this frequency ).
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Page 19: Display Contrast
SML133 Operating Manual 2.3.3.2 Maximum Active Power Demand Registration From the instantaneous measured values of all active powers the instrument evaluates their average values per preset period using preset averaging method – active power demands. Note that the active power demand, which is evaluated in the electricity meter unit (ΣP ), is processed individually and AVGE its averaging period is presetable independently on standard average values. - Page 20 SML133 Operating Manual 3. Digital Inputs & Outputs (I/O) Instruments can be optionally equipped with a combination of outputs and inputs. A summary of possible variations and connection examples at the end of this manual. Following I/O types are available : digital relay output (power relay, electromechanical), marked as ROx (x =output number) •...
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Page 21: Digital Input Connection
SML133 Operating Manual V Models – Digital I/O Connection terminal signal notes O1-… DO1 digital output - input and outputs are unipolar - common pole of outputs „12+“ is positive (+) O2-… DO2 digital output - common pole of inputs „34-“ is negative (-) 12+... -
Page 22: Pulse Output Mode
SML133 Operating Manual The alarm lights A1, A2 setup is not displayed, it is available via a communication line only. You can only check if the setup is the same as corresponding O1/O2 setup or not. If any of signal lights A1, A2 is set, the outlines of both lights appear on the display. - Page 23 SML133 Operating Manual be empty – then appropriate clause action is performed permanently (empty • condition gets true result) be created by one condition item only (for example the quantity value condition ) • be formed by combination of two or more condition items joined with •...
- Page 24 SML133 Operating Manual Generally, maximum limits of the I/O setup are : 20 clauses • 20 actions, including 2 different pulse output actions • 7 conditions in each of the clauses • To remove an action or a condition from a clause, click on it and press the Delete button in the the condition/action properties field (or push the Delete key).
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Page 25: Pulse Output
SML133 Operating Manual I/O Setup – PC Action Properties If the name is not defined, the quantity is referenced with its general name PCxx (when the xx is index corresponding digital input). 3.3.1.3 Digital Output (Standard) In combination with a suitable condition (see the quantity value condition description below) you can create simple two-point controller or indicator with this action. -
Page 26: Alarm Light
SML133 Operating Manual I/O Setup – Pulse Output Action Properties You can set one of alarm lights (A1, A2) as pulse output too and then you can check the pulse function on the instrument display simultaneously. 3.3.1.5 Alarm Light Alarm lights A1, A2 can be set in the same way as digital outputs (see above) and used for indication of various events on the instrument display. - Page 27 SML133 Operating Manual 3.3.2.2 Measured Quantity Condition Values of main measured quantities can be used as condition in the I/O setup clauses. Selected quantity size is compared with preset limit and gets either true(1) or false(0) result. For this, the following parameters must be preset : control quantity &...
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Page 28: Computer Controlled Operation
SML133 Operating Manual 4. Computer Controlled Operation Monitoring the currently measured values and the instrument setup can using a remote computer connected to the instrument via a communication link. Such operation allows you to use all the setup options of the instrument, which it is not possible from the panel of the instrument. Following chapters describe instrument communication links from the hardware point of view only. -
Page 29: Modbus Communications Protocol
SML133 Operating Manual 4.2 Communication Protocols Instruments support both proprietary KMB protocol and Modbus and M-Bus protocols. Protocol detection is automatic; for proper link operation, the communication address, baudrate, number of data bits and, optionally, the parity too(parameter groups 15 and 16, optionally) must be set. - Page 30 SML133 Operating Manual 4.3 The ENVIS Program The ENVIS set of programs is used to set up the instruments, downloading actual measured data and to data visualization and archiving on a supervising PC. Detailed operation description can be found in manuals of the programs ( www.kmbsystems.eu ).
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Page 31: Examples Of Connections
SML133 Operating Manual 5. Examples of Connections SML133 U 230 X/5A – Connection with 5A Nominal Output CTs TN-Network, Direct Star (“3Y”) Connection SML133 U 230 X/333mV – Connection with 333 mV Nominal Output CTs... - Page 32 SML133 Operating Manual SML133 U 230 X/333mV – Connection with 333 mV Nominal Output Rogowski Current Sensors Equipped with Embedded Integrators SML133 ... X/5A – Measured Signal Connection Examples IT Network TN Network Direct Delta (“3D”) Connection Direct Star (“3Y”) Connection...
- Page 33 SML133 Operating Manual IT Network TN Network Direct Aron (“3A”) Connection Star (“3Y”) Connection via VT IT Network IT Network Delta (“3D”) Connection via VT Delta (“3D”) Connection via VT (VT to Line-to-Neutral Primary Voltage) (VT to Line-to-Line Primary Voltage)
- Page 34 SML133 Operating Manual SML133 ... – Power Supply Options Line-to-Line Voltage DC Power Supply Line-to-Neutral Voltage AC Power Supply AC Power Supply NOTE POLARITY MAXIMUM FREE AVAILABLE VOLTAGE !!! SML133 ... RI – Digital I/O Connection Example...
- Page 35 SML133 Operating Manual SML133 ... V – Digital I/O Connection Example SML133 ... 4 – RS-485 Communication Link Connection...
- Page 36 SML133 Operating Manual Numbering of Terminals – Measuring & Power Supply Inputs signal terminal No. I11 (SI1*) 1 (62*) I12 (SG*) 2 (63*) I21 (SI2*) 3 (65*) I22 (SG*) 4 (66*) I31 (SI3*) 5 (68*) I32 (SG*) 6 (69*) 61, 64, 67 *) positive pole of 5V aux.
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Page 37: Manufactured Models And Marking
SML133 Operating Manual 6. Manufactured Models and Marking... -
Page 38: Technical Specifications
SML133 Operating Manual 7. Technical Specifications Function Characteristics according to IEC 61557-12 Model „230 X/5A“, U = 230 V, I = 5 A Symbol Function Class Measuring range Notes total effective power 0 ÷ 5400 W total reactive power 0 ÷ 5400 var total apparent power 0 ÷... - Page 39 SML133 Operating Manual Function Characteristics according to IEC 61557-12 = 100 / 230 / 400 V for model “100” / “230” / “400” Model „X/5A“, I = 5 A Symbol Function Class Measuring range Notes total effective power 0 ÷ (21.6 * U total reactive power 0 ÷...
- Page 40 SML133 Operating Manual Function Characteristics according to IEC 61557-12 = 100 / 230 / 400 V for model “100” / “230” / “400” Model „X/100mA“, I = 0.1 A Symbol Function Class Measuring range Notes total effective power 0 ÷ (0.43 * U total reactive power 0 ÷...
- Page 41 SML133 Operating Manual Measured Quantities - Voltage Frequency – nominal frequency 50 / 60 Hz measuring range 40 ÷ 70 Hz measuring uncertainty ± 20 mHz Voltage model „100“ „230“ „400“ ) – rated voltage 57.7 ÷ 125 V 180 ÷ 250 V 300 ÷...
- Page 42 SML133 Operating Manual Measured Quantities – Current model „X/5A“ „X/100mA“ „X/333mV“ ) – rated current 1 / 5 A 0.1 A I @ 333mV measuring range 0.005 ÷ 7 A 0.001 ÷ 0.39 A 0.002 ÷ 0.5 V meas. uncertainty +/- 0.05 % of rdg +/- 0.02 % of rng =23±2°C) temperature drift...
- Page 43 SML133 Operating Manual Measured Quantities – Power, Power Factor, Energy Active / Reactive Power, Power Factor (PF), cos φ ( P reference conditions “A” : ambient temperature ( t 23 ± 2 °C U, I U = 80 ÷ 120 % U , I = 1 ÷...
- Page 44 SML133 Operating Manual „X/333mV“ Instrument Model Auxiliary Voltage for Current Sensors connection non-isolated (connected with the instrument internal circuitry) output voltage +5 V ± 5 % maximum permanent load 60 mA 5 seconds short-circuit current, max. duration approx. 100 mA Digital Outputs &...
- Page 45 EMC – emissions EN 55011, class A EN 55022, class A (not for home use ) remote communication port (option) RS-485 / 2400÷460800 Bd / protocols KMB, Modbus-RTU Ethernet 100 Base-T / DHCP, webserver, Modbus-TCP M-Bus (max. 9600 Bd) display...
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Page 46: Maintenance & Service
If the product has a breakdown, you need to complain to the supplier at their address: Supplier: Manufacturer : KMB systems, s.r.o. Dr. M. Horákové 559 460 06 LIBEREC 7 Czech Republic...