One-shot Results for Narrowband, Full Spectrum and Harmonics
| Measurement Channels |
|
| Features |
|
| User-Interface |
|
| Memory and Interfaces |
|
| Miscellaneous |
|
In Power meters of traditional construction, a signal first passes through an analog processing, the output values are digitized by an A / D converter and then processed. The resulting signal may then either measured over the full range, or treated with anti-aliasing filters, e.g., to serve as the basis for an FFT or other digital filtering. By restriction to an A / D converter, one has to taken certain disadvantages into account. If measured with a filter, in order to avoid aliasing in the FFT, the broadband values are lost. When the filter is disengaged, strictly speaking, the FFT has to be omitted. If the FFT is performed without anti-aliasing filter for measurement over the full bandwidth, the quality of the calculated values is questionable. For example, an aliasing error of 50% would of course be easily detected, a deviation of 0.5% could remain unnoticed. Finally, it can be switched back and forth between measurements with and without filters. The validity of these results is, however, also doubtful, as would be expected of a temporal invariability of the signal, which is hardly ever the case in reality. Moreover, this method is extremely time consuming.
Ultimately, the shown measurement methods are unsatisfactory compromises. For this reason, ZES ZIMMER has radically redesigned the signal conditioning and developed the DualPath architecture. The analog side corresponds to the conventional instruments, the subsequent digital processing, however, was revolutionized. The power analyzers of the LMG600 Series are the first power meters featuring two A / D converters in each of the two independent signal paths for current and voltage channel. A filter for the contact measurement of the broadband signal, and another for the narrowband signal at the output of anti-aliasing filter. By means of parallel processing of the digitized samples, the user has access to both measurements of the same signal without the risk of aliasing. This unique process eliminates all the disadvantages of previous approaches and guarantees accurate results in the shortest time.
In the wake of stricter monitoring of consumption and efficiency of electrical appliances, new standards and procedures (eg SPECpower_ssj2008, IEC 62301) will continuously be created to enable an objective comparison of the different manufacturers. Whether it is workstations, servers or appliances, is irrelevant to the principle: The long-term evaluation of the power consumption has always to take all relevant operating conditions into account. The differences between minimum load - e.g., Idle mode, - and full load can thereby be of considerable magnitude, which requires a very sophisticated means of measurement (see also Application Note No. 102, "Measurement of standby power and energy efficiency."). The measurements must be carried out over several hours and may not show any gaps. By selecting a sufficiently large measurement range, range changes and the inevitably resulting data losses can be avoided. The fundamental precision LMG600 also ensures an accurate measurement at the lower limit of a range.
The fast switching semiconductors used to improve the efficiency of modern frequency converters cause extremely steep voltage edges. The resulting capacitive currents affect the bearings and the motor insulation - this can lead to premature failure.
Motor filter (e.g. du / dt filter) attenuate the voltage gradient, but generate themselves power dissipation due to the settling of the filters' frequencies (typically > 100 kHz). The high bandwidth and the small time difference between the current and voltage of the LMG600 enable highly accurate power loss measurements on the filters at these frequencies, and longitudinal measurements with small cos φ. This also applies to power measurements at high bandwidths up to 10 MHz. This requires that the current and voltage channels must be designed for minimum delay differences; in the LMG600 it is less than 3 ns; this corresponds to 50 Hz at an angle error <1 μrad. The instrument is therefore ideally suited for the power loss measurement at small phase angles for transformers, inductors, capacitors and ultrasonic sensors. No options or adjustments are necessary, as the devices will fully meet this measurement task already in the default setting when shipped. For measurements on circuits of highest performance, typically current and voltage transducers are employed. The phase angle of the converter can be corrected via the runtime menu and thus the measurement accuracy can be improved.
12 months guaranteed calibration for low maintenance cost and optimum equipment availability
Free calibration protocol included at first delivery
All ZES ZIMMER power meters of the LMG series, the current sensors of PCT series and the voltage sensors of the HST series are carefully tested, adjusted and calibrated prior to shipment and are subject to strict quality controls.
ZES ZIMMER guarantees for a period of 24 months from first delivery that these products are free from defects in material or workmanship.
Harmonics and inter-harmonics up to the 400th order, in accordance with standards as per EN61000-4-7
Although the LMG600 offers an unsurpassed dynamics in both the voltage and current range, there are always applications with exceptional demands on the measurement areas. Whether this is to currents of several hundred amperes and voltages of several kilovolts, ZES ZIMMER has a suitable solution at hand. We provide a wide range of current and voltage sensors that is perfectly matched to the precision power meter LMG600 and expands the measurement range of the instrument to the necessary degree. The sensors of our "Plug'n Measure" series are equipped with a bus system, which allows automatic configuration of LMG600. All important parameters, such as the exact scaling factor, the term compensation quantity, the last calibration date and the sensor type, are automatically read by the power meter and included in the measurements. In addition, the sensors' operating power is supplied by LMG600, so that a separate power supply is not necessary. With "Plug'n Measure" mal-adjustment by the user is avoided and the best possible measurement results are guaranteed. From the user's point of view, no difference between direct and sensor-based measurement is perceptible. Of course, other conventional sensors can also be used with the LMG600.
The LMG Remote PC software allows to easily control the LMG670 remotely from a Windows PC. Since this software mimicks the measuring device itself down to the last detail, the LMG670 can be operated as usual, even from the PC - no rethinking required, no familiarization time.
Display only what you really need in a way that helps you most to achieve the task at hand - as easy as 1-2-3:
| LMG610-A | LMG610-A for high-precision broadband measurements |
|
High-Precision Channel for power measurements with DualPath functionality, bandwidth DC-10 MHz best accuracy 0.015% + 0.01% Measuring inputs and ranges: 1. Voltage directly (V): 3/6/12,5/25/60/130/250/400/600/1000 Vtrms; 3200 Vpk 2. Voltage sensor input (mV): 30/60/120/250/500 (V): 1/2/4 Vtrms; 8 Vpk 3. Current directly (mA): 5/10/20/40/80/150/300/600 and (A): 1.2/2.5/5/10/20/32 Atrms; 120 Apk 4. Current sensor input (mV): 30/60/120/250/500 (V): 1/2/4 Vtrms; 12.5 Vpk |
|
| LMG610-B | LMG610-B for general purpose measurements |
|
Multi-purpose measurement channel with DualPath functionality, bandwidth DC - 500 kHz best accuracy 0.05% + 0.02% Measuring inputs and ranges 1. Voltage directly (V): 3/6/12.5/25/60/130/250/400/600/1000 Vtrms; 3200 Vpk 2. Current directly (mA): 5/10/20/40/80/150/300/600 and (A): 1.2/2.5/5/10/20/32 Atrms; 120 Apk 3. Current sensor input (mV): 30/60/120/250/500 (V): 1/2/4 Vtrms; 12.5 Vpk |
|
| LMG610-C | LMG610-C for high-precision 50/60 Hz measurements |
|
High-precision measurement channel for 50 Hz applications, bandwidth DC - 10 kHz, best accuracy 0.03% + 0.01%. Measuring inputs and ranges: 1. Voltage directly (V): 3/6/12,5/25/60/130/250/400/600/1000 Vtrms; 3200 Vpk 2. Current directly (mA): 5/10/20/40/80/150/300/600 and (A): 1.2/2.5/5/10/20/32 Atrms; 120 Apk 3. Current sensor input (mV): 30/60/120/250/500 (V): 1/2/4 Vtrms; 12.5 Vpk |
| L6-OPT-CE-FLK |
Option Package CE Flicker for LMG600, consisting of: - the LMG flicker meter according to EN61000-4-15 (L6-OPT-FLK) as well as - the PC software* LMG Test Suite (LMG-TEST-CE-FLK) for analysis of measured values according to EN61000-3-3 and EN61000-3-11 for 1-phase and 3-phase equipment under test |
| L6-OPT-CE-HRM |
Option Package CE Harmonics for LMG600, consisting of: - the harmonic analysis of the measured signals in the LMG (L6-OPT-HRM) as well as - the PC software* LMG Test Suite (LMG-TEST-CE-HRM) for analysis of measured values according to EN61000-3-2 and EN61000-3-12 for 1-phase and 3-phase equipment under test |
| L6-OPT-CE-HRMFLK |
Option Package CE Harmonics and Flicker for LMG600, consisting of: - the harmonic analysis of the measured signals in the LMG (L6-OPT-HRM), - internal flicker meter according to EN61000-4-15 (L6-OPT-FLK) as well as - the PC software* LMG Test Suite (LMG-TEST-CE-HRM + LMG-TEST-CE-FLK) for analysis of measured values according to EN61000-3-2 / EN61000-3-12 and EN61000-3-3 / EN61000-3-11, each for 1-phase and 3-phase equipment under test |
| L6-OPT-CAN |
CAN bus interface:
read more here CAN bus connectivity according to ISO 11898-2 (high-speed CAN) - bit rate: 5 kbit/s to 1Mbit/s - galvanic separation at CAN connector: up to 500V - active support of CAN 2.0A and B standards - Standard Frame Format or Extended Frame Format for sending measurement results - manual polling of measurement values possible via Remote Transmission Request (RTR) |
| L6-OPT-EVT |
Event Triggering:
read more here triggering on crossing voltage or current thresholds recording of 4 tracks with up to 4 million values each |
| L6-OPT-HRM |
Harmonic analysis up to max. 1.000th order (2.000th order with interharmonics) of U, I, P, Q and S, fundamental 3 ... 1200 Hz, up to 150 kHz (A channel) resp. 15 kHz (B channel) or 10 kHz (C channel) with anti-aliasing filter, customizable settings for the detection of interharmonics |
| L6-OPT-FLK | Flicker meter according to EN61000-4-15 |
| L6-OPT-SMV |
Smart Vision Smart add-on functions for the convenient evaluation of measurements The package includes: - Painter: screenshots can be enriched with valuable additional information directly in the GUI before saving - Env Var Watcher: script-controlled visual watchdog as part of a custom menu |
| L6-OPT-SPV |
Sample Value Analysis Module for LMG600 Software* for continuous and gapless streaming of sample values on 4 tracks at a rate of 10 kS/s (up to 1.2 MS/s under optimal conditions), furthermore: - display of sample recordings in ZLR format - display of frequency spectrum of recorded sample values - calculation of RMS values of voltage, current and power - CSV or MATLAB export of frequency spectrum and RMS values |
| L6-OPT-MSD-320 |
Mass Storage Device for Measurement Results (320 GB) Internal mass storage device for long-time recording of measurements (capacity 320 GB) Some space is used by the system |
* System requirements:
- Operating system: Windows 7/8/10 (32/64 bit)
- Hard drive: software: min. 50 MB, data: approx. 20 MB per minute of measurement/phase
- RAM memory: min. 2 GB
- Processor: min. 2 GHz, dual-core
- Interfaces supported: Gbit-Ethernet
| Dimensions | Width | Heighth | Depth |
| LMG640 (Table top) | 455 mm | 224 mm | 200 mm |
| Weight | Depending on installed options: max. 7.2 kg | ||
| Protection class | EN 61010 (IEC 61010, VDE 0411), protection class I / IP20 in accordance with EN 60529 | ||
| Electromagnetic compatibility | EN 61326 | ||
| Temperature | 0 ... 40 °C (operation) / -20 ... 50 °C (storage) | ||
| Climatic category | Normal environmental conditions according to EN 61010 | ||
| Line input | 100 ... 230 V, 47 ... 63 Hz, max. 200 W | ||
| A channel Accuracy |
± (% of measured value + % of maximum peak value) | ||||||||||||||||||
| DC | DCe) | 0.05 Hz ... 45 Hz 65 Hz ... 3 kHz | 45 Hz ... 65 Hz | 3 kHz ... 10 kHz | 10 kHz ... 50 kHz | 50 kHz ... 100 kHz | 100 kHz ... 500 kHz | 500 kHz...1 MHz | 1 MHz ... 2 MHz | 2 MHz ... 10 MHz | |||||||||
| Voltage U* | 0.02+0.08 | 0.02+0.06e) | 0.015+0.03 | 0.01+0.02 | 0.03+0.06 | 0.2+0.4 | 0.5+1.0 | 0.5+1.0 | f/1 MHz*1.5 + f/1 MHz*1.5 | ||||||||||
| Voltage USENSOR | 0.02+0.08 | 0.02+0.06e) | 0.015+0.03 | 0.01+0.02 | 0.03+0.06 | 0.2+0.4 | 0.4+0.8 | 0.4+0.8 | f/1 MHz*0.7 + f/1 MHz*1.5 | ||||||||||
| Current I* 5 mA...5 A | 0.02+0.1 | 0.02+0.06e) | 0.015+0.03 | 0.01+0.02 | 0.03+0.06 | 0.2+0.4 | 0.5+1.0 | 0.5+1.0 | f/1 MHz*1.0 + f/1 MHz*2.0 |
- | |||||||||
| Current I* 10 A...32 A | 0.02+0.1 [1]) | - | 0.015+0.033) | 0.01+0.023) | 0.1+0.23) | 0.3+0.63) | f/100 kHz*0.8 + f/100 kHz*1.23) | - | - | - | |||||||||
| Current ISENSOR | 0.02+0.08 | 0.02+0.06e) | 0.015+0.03 | 0.01+0.02 | 0.03+0.06 | 0.2+0.4 | 0.4+0.8 | 0.4+0.8 | f/1 MHz*0.7 + f/1 MHz*1.5 | ||||||||||
| Power U*/ I* 5 mA...5 A | 0.032+0.09 | 0.032+0.06e) | 0.024+0.03 | 0.015+0.01 | 0.048+0.06 | 0.32+0.4 | 0.8+1.0 | 0.8+1.0 | f/1 MHz*2.0 + f/1 MHz*1.8 |
- | |||||||||
| Power U*/ I* 10 A...32 A | 0.032+0.092) | - | 0.024+0.034) | 0.015+0.014) | 0.104+0.134) | 0.4+0.54) | f/100 kHz*0.8 + f/100 kHz*0.84) |
f/100 kHz*1.0 + f/100 kHz*1.14) |
- | - | - | ||||||||
| Power U*/ ISENSOR | 0.032+0.08 | 0.032+0.06e) | 0.024+0.03 | 0.015+0.01 | 0.048+0.06 | 0.32+0.4 | 0.72+0.9 | 0.72+0.9 | f/1 MHz*1.8 + f/1 MHz*1.5 | ||||||||||
| Power USENSOR / I* 5 mA...5 A | 0.032+0.09 | 0.032+0.06e) | 0.024+0.03 | 0.015+0.01 | 0.048+0.06 | 0.32+0.4 | 0.72+0.9 | 0.72+0.9 | f/1 MHz*1.4 + f/1 MHz*1.8 |
- | |||||||||
| Power USENSOR / I* 10 A...32 A | 0.032+0.092) | - | 0.024+0.034) | 0.015+0.014) | 0.104+0.134) | 0.4+0.54) | f/100 kHz*0.8 + f/100 kHz*0.84) |
f/100 kHz*1.0 + f/100 kHz*1.04) |
- | - | - | ||||||||
| Power USENSOR / ISENSOR | 0.032+0.08 | 0.032+0.06e) | 0.024+0.03 | 0.015+0.01 | 0.048+0.06 | 0.32+0.4 | 0.64+0.8 | 0.64+0.8 | f/1 MHz*1.1 + f/1 MHz*1.5 | ||||||||||
| B channel Accuracy |
± (% of measured value + % of maximum peak value) | ||||||||||||||||||
| DC | 0,05 Hz ... 45 Hz 65 Hz ... 1 kHz | 45 Hz ... 65 Hz | 1 kHz ... 5 kHz | 5 kHz ... 20 kHz | 20 kHz ... 100 kHz | 100 kHz ... 500 kHz | |||||||||||||
| Voltage U* | 0.1+0.1 | 0.1+0.1 | 0.03+0.03 | 0.2+0.2 | 0.3+0.4 | 0.4+0.8 | f/1 00 kHz*0.8 + f/1 00 kHz*1.2 |
||||||||||||
| Current I* 5 mA...5 A Current ISENSOR |
0.1+0.1 | 0.1+0.1 | 0.03+0.03 | 0.2+0.2 | 0.3+0.4 | 0.4+0.8 | f/1 00 kHz*0.8 + f/1 00 kHz*1.2 |
||||||||||||
| Current I* 10 A...32 A | 0.1+0.11) | 0.1+0.13) | 0.03+0.033) | 0.2+0.23) | 0.6+1.23) | 1.5+1.53) | f/1 00 kHz*2.0 + f/1 00 kHz*2.03) |
||||||||||||
| Power U*/ I* 5 mA...5 A Power U*/ ISENSOR |
0.16+0.1 | 0.16+0.1 | 0.05+0.02 | 0.32+0.2 | 0.48+0.4 | 0.64+0.8 | f/1 00 kHz*1.28 + f/1 00 kHz*1.2 |
||||||||||||
| Power U*/ I* 10 A...32 A | 0.16+0.12) | 0.16+0.14) | 0.05+0.024) | 0.32+0.24) | 0.72+0.84) | 1.52+1.154) | f/1 00 kHz*2.24 + f/1 00 kHz*1.64) |
||||||||||||
| C channel Accuracy |
± (% of measured value + % of maximum peak value) | ||||||||||||||||||
| DC | 0,05 Hz ... 45 Hz 65 Hz ... 200 Hz | 45 Hz ... 65 Hz | 200 Hz ... 500 Hz | 500 Hz ... 1 kHz | 1 kHz ... 2 kHz | 2 kHz ... 10 kHz | |||||||||||||
| Voltage U* | 0.1+0.1 | 0.02+0.05 | 0.02+0.02 | 0.05+0.05 | 0.2+0.1 | 1.0+0.5 | f/1 kHz*1.0 + f/1 kHz*1.0 |
||||||||||||
| Current I* | 0.1+0.11) | 0.02+0.053) | 0.02+0.023) | 0.05+0.053) | 0.2+0.13) | 1.0+0.53) | f/1 kHz*1.0 + f/1 kHz*1.03) |
||||||||||||
| Current ISENSOR | 0.1+0.1 | 0.02+0.05 | 0.02+0.02 | 0.05+0.05 | 0.2+0.1 | 1.0+0.5 | f/1 kHz*1.0 + f/1 kHz*1.0 |
||||||||||||
| Power | 0.16+0.12) | 0.032+0.054) | 0.03+0.014) | 0.08+0.054) | 0.32+0.14) | 1.6+0.54) | f/1 kHz*1.6 + f/1 kHz*1.04) |
||||||||||||
| Accuracies valid for: | 1. Sinusoidal voltages and currents 2. Ambient temperature (23±3) °C 3. Warm-up time 1 h 4. The maximum peak value for power is the product of the maximum peak value for voltage and the maximum peak value for current. |
5. 0 ≤ |λ| ≤ 1 (power factor)
6. Current and voltage 7. Adjustment carried out at 23 °C 8. Calibration interval 12 months |
|||||||||||||||||
| Other values | All other values are calculated from current, voltage and power. Accuracy resp. error limits are derived according to context (e.g. S = I * U, ΔS / S = ΔI / I + ΔU / U). | ||||||||||||||||||
1) 2) 3) 4) only valid in range 10 ... 32 A:
1) additional uncertainty ± 50μA/A2 * Itrms2 2) additional uncertainty ± 50μA/A2 * Itrms2 * Utrms 3) additional uncertainty ± 50μA/A2 * Itrms2 4) additional uncertainty ± 50μA/A2 * Itrms2 * Utrms
e) Accuracy specification after non-persistent zero adjustment, temperature change after zero adjustment max. ±1°C
| Voltage measuring ranges U* | |||||||||||||||||||||||||||||
| Nominal value (V) | 3 | 6 | 12.5 | 25 | 60 | 130 | 250 | 400 | 600 | 1000 | |||||||||||||||||||
| Max. trms value (V) | 3.3 | 6.6 | 13.8 | 27.5 | 66 | 136 | 270 | 440 | 660 | 1000 | |||||||||||||||||||
| Max. peak value (V) | 6 | 12 | 25 | 50 | 100 | 200 | 400 | 800 | 1600 | 3200 | |||||||||||||||||||
| Overload protection | 1000 V + 10 % permanently, 1500 V for 1 s | ||||||||||||||||||||||||||||
| Input impedance | 4.59 MΩ, 3 pF | ||||||||||||||||||||||||||||
| Earth capacitance | < 90 pF | ||||||||||||||||||||||||||||
| Current measuring ranges I* | |||||||||||||||||||||||||||||
| Nominal value (A) | 0.005 | 0.01 | 0.02 | 0.04 | 0.08 | 0.15 | 0.3 | 0.6 | 1.2 | 2.5 | 5 | 10 | 20 | 32 | |||||||||||||||
| Max. trms value (A) | 0.0055 | 0.011 | 0.022 | 0.044 | 0.088 | 0.165 | 0.33 | 0.66 | 1.32 | 2.75 | 5.5 | 11 | 22 | 32 | |||||||||||||||
| Max. peak value (A) | 0.014 | 0.028 | 0.056 | 0.112 | 0.224 | 0.469 | 0.938 | 1.875 | 3.75 | 7.5 | 15 | 30 | 60 | 120 | |||||||||||||||
| Input impedance | ca. 2.2 Ω | ca. 600 mΩ | ca. 80 mΩ | ca. 20 mΩ | ca. 10 mΩ | ||||||||||||||||||||||||
| Overload protection permanent (A) | LMG in operation 10 A | LMG in operation 32 A | |||||||||||||||||||||||||||
| Overload protection short-time (A) | 150 A for 10 ms | ||||||||||||||||||||||||||||
| Earth capacitance | < 90 pF | ||||||||||||||||||||||||||||
| Sensor inputs USENSOR, ISENSOR | |||||||||||||||||||||||||||||
| Nominal value (V) | 0.03 | 0.06 | 0.12 | 0.25 | 0.5 | 1 | 2 | 4 | |||||||||||||||||||||
| Max. trms value (V) | 0.033 | 0.066 | 0.132 | 0.275 | 0.55 | 1.1 | 2.2 | 4.4 | |||||||||||||||||||||
| Max. peak value (V) | 0.0977 | 0.1953 | 0.3906 | 0.7813 | 1.563 | 3.125 | 6.25 | 12.5 | |||||||||||||||||||||
| Overload protection | 100 V permanently, 250 V for 1 s | ||||||||||||||||||||||||||||
| Input impedance | 100 kΩ, 34 pF | ||||||||||||||||||||||||||||
| Earth capacitance | < 90 pF | ||||||||||||||||||||||||||||
| Isolation | All current and voltage inputs are isolated against each other, against remaining electronics and against earth. Max. 1000 V / CAT III resp. 600 V / CAT IV | ||||||||||||||||||||||||||||
| Synchronization | Measurements are synchronized on the signal period. The period is determined based on „line“, „external“, u(t) or i(t), in combination with configurable filters. Therefore readings are very stable, especially with PWM controlled frequency converters and amplitude modulated electronic loads. | ||||||||||||||||||||||||||||
| Scope function | Graphical display of sample values over time in two scopes with 8 signals each | ||||||||||||||||||||||||||||
| Plot function | Two time (trend-) diagrams of max. 8 parameters, max. resolution 30 ms | ||||||||||||||||||||||||||||
| External graphics interface (L6-OPT-DVI) | VGA/DVI interface for external screen output | ||||||||||||||||||||||||||||
| Harmonics at device level (L6-OPT-HRM) | Harmonics and interharmonics up to 2,000th order | ||||||||||||||||||||||||||||
| Flicker (L6-OPT-FLK) | According to EN 61000-4-15 | ||||||||||||||||||||||||||||
| LMG Remote | LMG600 expansion software, basic module for remote configuration and operation via PC | ||||||||||||||||||||||||||||
| L60-TEST-CE61K | LMG600 software for conformity tests according to EN61000 for harmonics and flicker | ||||||||||||||||||||||||||||
The complete technical data can be found in the manual, which is stored on your LMG600 in the valid version.
Firmware LMG600 series: Firmware update 3.121 now available upon request.
| L6-X-00-D | LMG600 manual in German |
| L6-X-00-E | LMG600 manual in English |
| L6-X-ADSE | Adaptor for LMG600 to connect sensors and current clamps |
| L6-X-HDL2 |
Handles for LMG610/40/70, 2 pcs. for front face, CNC milled and powder-coated |
| L6-ACC-SYNC-2 | Sync cable for pair of LMG600 |
| L6-ACC-SYNC-3 | Sync cable for 3x LMG600 |
| LMG-REMOTE | Remote software, included in standard shipping |
| L67-X-01 | LMG610*/70 19 inch rack mount kit |
*conditionally suitable, because all interfaces of the LMG610 are located on the right hand side of the device
