Power Quality Analyzer PQM-703 / PQM-702
Power Quality & Power Factor Correction, Industrial Power Quality Solutions, Power Conditioners - Voltage Stabilisers, Active Harmonic Filters, Power Factor Correction
- Power to the analyzer is used in all types of networks from 64 V to ,7 60 V with particular emphasis on measurements at low voltage poles
- An independent power supply socket, especially suited for voltage measurements for transformers and DC circuits
- Remote control and data transfer through a built-in GSM modem (GPRS)
- Anti-theft feature – SMS notification in the event of position change – built in GPS receiver
- Real-time clock synchronized to GPS protocol
Possible measurements:
· Measurements according to EN 50160,
· Voltage L1, L2, L3, N-PE,
– average, minimum, maximum and instantaneous values, range to 760 V, ability to work with voltage transformers,
· Current L1, L2, L3, N (four inputs),
– average, minimum, maximum and instantaneous values , measurement current with range to 3 kA (depends on used clamp), bility to a work with current transformers,
· Crest factor for voltageandcurrent
· Frequency from 40Hz to 70Hz,
· Active, reactive, distortion, apparent power, including the type of reactive power (capacitive, inductive)
· Power recording
– Budeanu method,
– IEEE 1 459,
· Active, reactive, apparent energy
· Power factor, cosφ, tgφ
· K factor (transformer overload caused by the harmonics),
· Up to50 harmonics for voltage and current,
· TotalHarmonic Distortion (THD) for voltage and current
· Short-term (PST ) and long-term (PLT) flicker,
· Unbalance of voltage and current,
· Current events detection including waveforms recording,
· Current and voltage events recording with waveforms (up to 1s) and RMS 10 ms graphs with 30 s maximum recording time,
· Current and voltage waveforms recording after each averaging period,
· Mains signaling up to 3000 Hz,
· Transients up to ±6000 V with max. sampling frequency 10 MHz. Minimal transient time is 650 ns (PQM-703 only).
Specifications Table
| Parameter | Measurement range | Max. resolution | Accuracy | |
| Alternating voltage (TRMS) | — | 0.0…760 V | 0.01 % Un | ±0.1% Un |
| Crest factor | Voltage | 1.00…10.00 (≤1.65 for 690 V voltage) | 0.01 | ±5% |
| Crest factor | current | 1.00…10.00 (≤3,6 Inom ) | 0.01 | ± 5% m.v. |
| Alternating current TRMS |
— | depending on clamp* | 0.01% of nominal range | ±0.1% of nominal range (error does not account for clamp error) |
| Frequency | — | 40.00…70.00 Hz | 0.01Hz | ±0.01 Hz |
| Active, reactive, apparent and distortion power |
— | depending on con guratio (transformers, clamp) |
up to four decimal places |
depending on con guratio (transformers, clamp) |
| Active, reactive apparent energy |
— | depending on con gurati (transformers, clamp) |
up to four decimal places |
as power error |
| cosφ and power factor (PF) | — | 0.00…1,00 | 0.01 | ±0.03 |
| tgφ | — | 0.00…10.00 | 0.01 | depends on active and reactive power error |
| Harmonics and interharmonics |
Voltage | as for alternating voltage True RMS | as for alternating voltage True RMS | ±5% Uh for Uh ≥1% Un ±0.05% Un for Uh<1% Un |
| Harmonics and interharmonics |
Current | as for alternating True RMS | as for alternating True RMS | ±5% Ih for Ih ≥3% In ±0.15% In for Ih<3% In |
| THD | Voltage | 0.0..100.0% (in regards to the rms value) |
0.10% | ±5% |
| THD | Current | 0.0..100.0% (in regards to the rms value) |
0.10% | ±5% |
| Active and reactive power of harmonics |
— | depending on con guration (transformers, clamp) |
depending on minimal current and voltage values |
— |
| Angle between current and voltage harmonics |
— | -180.0…+180.00 | 0.10 | ±(h x 10 ) |
| K- factor | — | 1.0…50.0 | 0.1 | ±10% |
| Flicker severity P , P ST LT | — | 0.20…10.00 | 0.1 | ±5% |
| Voltage asymmetry | Voltage and current | 0.0…20.0% | 0.01 | ±0.15% (absolute error) |
| Mains signaling | Voltage | 5…3000 Hz | 0.01 Hz | ± 0.15% Un for 1…3% Un, 5% Un for 3…15% Un |
| Transients (PQM-703 only) | Voltage | ±6000 V (with max. sampling 10 MHz) | 5V | ± (0.5% + 25 V) |
*Clamp F-1, F-2, F-3:0..3000A (10000App) *Clamp C-4: 0..1000A (3600App)*Clamp C-5: 0..1000A (3600App)*Clamp C-6: 0..10A (36App) (without current transformers) Clamp C-7: 0…100 A (360App)
