Açıklama
Elektrik mühendislik laboratuvarı ETL-35K, 6 kV, 10 kV ve 35 kV (Yeraltı Kabloları ve Transformatörler İçin Test Cihazı) sınıfı güç kablolarının hasar yerlerini önceden tespit etmek ve ardından bu kabloları yüksek voltajla test etmek için kapsamlı bir çözümdür.
ETL-110, bir aracın minibüsüne monte edilir ve yapısal olarak iki bölümden oluşur: operatör bölmesi ve yüksek gerilim bölmesi. Operatör bölmesi, yüksek gerilim bölümünden bir kontrol paneliyle ayrılmıştır. Kontrol panelinde, ETL cihazının çalışma kontrolleri (anahtarlar, düzenleyiciler vb.) ve test parametrelerinin izlenmesi için göstergeler bulunur. Ayrıca panelde, ek ekipman veya araçlar için çekmeceler de yer alır.
Müşteri taleplerine göre, ETL-35K ek ekipmanlarla donatılabilir.
| AC voltage testing (IOM-100/8 single-phase oil-filled transformer with a KZMK-100 short-circuiter) |
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| Maximum AC voltage | 100 kV | |||
| Maximum AC current | 80 mA | |||
| AC and DC voltage testing (BVI-60/50-M5 high-voltage test unit) |
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| Maximum DC voltage | 60 kV | |||
| Maximum AC voltage | 50 kV | |||
| Maximum DC current | 60 mA | |||
| Maximum AC current | 60 mA | |||
| Control of low leakage currents (ITV-140P current meter) |
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| Model | ITV-140P3 | ITV-140P9 | ITV-140P30 | |
| Measuring range of DC current | 0.01 – 5 mA | 0.01 – 9 mA | 0.03 – 30 mA | |
| Measuring range of AC current | 0.01 – 5 mA | 0.01 – 9 mA | 0.03 – 30 mA | |
| Resolution | 0.001 mA | |||
| Absolute error | 0.01∙of reading + 5 dig. | |||
| Input resistance | 110 ± 10 Ohm | 65 ± 5 Ohm | 36 ± 5 Ohm | |
| Bandwidth | 0 – 1000 Hz | |||
| Radio frequency range | 845 – 945 MHz | |||
| Number of frequency channels | 20 | |||
| Transmitter power | 1 mW | |||
| Radio range | 5 – 10 m | |||
| Burning and afterburning of cable insulation (BPR-25/8 unit) |
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| Maximum output voltage in idle mode | 20 kV | |||
| Minimum output voltage in idle mode | 1 kV | |||
| Number of burn-in steps (5, 10, 15 and 20 kV) | 4 pcs. | |||
| Maximum current in short circuit mode (5 kV) | 2 А | |||
| Current consumption (limited by line choke) | 63 А | |||
| Power consumption | 12 kVA | |||
| Power delivered to the load in matched mode | 3.5 kW | |||
| Maximum afterburning voltage in idle mode (“1 kV”) | 1500 V | |||
| Maximum afterburning current in short circuit mode (“0,5 kV”) | 18 А | |||
| Measurement of the dissipation factor and capacitance (IDP-10 dielectric loss meter) |
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| Dissipation factor measurement range | 5·10-4 – 0.3 | |||
| Absolute error | ± (5·10-4 + 0.05·tgδ) (at 50 Hz) ± (1·10-3 + 0.13·tgδ) (at 54 Hz) |
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| Capacitance measurement range | 25 – 30000 pF (at 10 kV) 50 – 60000 pF (at 5 kV) |
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| Absolute error | ± (0.5 pF + 0.03 Сх) (at 50 Hz) ± (0.5 pF + 0.04 Сх) (at 54 Hz) |
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| Operating voltage range | 1 – 10 kV | |||
| Relative error | ± 3 % (at 50 and 54 Hz) | |||
| Pre-location of the distance of the cable fault (ISKRA-4 reflectometer) |
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| Working mode | TDR (low-voltage impuls method), ICE (high-voltage oscillatory discharge method with current coupling), Decay (high-voltage oscillating discharge method with voltage coupling), ARC (high-voltage pulsed method). |
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| Range of the measured distance to the fault location | 3 – 15300 m | |||
| Resolution | 0.5 m | |||
| Parameters of high-voltage probing pulses on 30 Ohm load: – amplitude – edge duration – pulse duration |
3 – 25 kV 0.15 ms 2 ms |
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| Parameters of low-voltage probing pulses on 30 Ohm load: – amplitude – edge duration – pulse duration |
5 V 0.02 ms 0.05 – 10 ms |
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| Maximum working voltage of the pulse voltage probe | 60 kV | |||
| Precise pinpointing of cable faults | ||||
| Induction method (GZCH-2500 generator of audio frequency, P-806 Receiver) |
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| Output power in matched mode | 2500 W | |||
| Maximum output idle voltage | 300 V | |||
| Maximum output current | 40 А | |||
| Generation frequency | 1024/2048 Hz | |||
| Modulation frequency | 1.5 – 3 Hz | |||
| Quantity of steps of matching with the load | 12 | |||
| Load resistance range | 0.5 – 150 Ohm | |||
| Acoustic method (GAUV-20-18 Generator of acoustic surge waves, P-806 Receiver) |
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| Capacity of accumulator | 16 μF | |||
| Maximum output voltage | 20 kV | |||
| Maximum energy of pulse discharge | 3200 J | |||
| Operation modes | manual / automatic | |||
| P-806 Receiver | ||||
| Frequency range | 1024 ± 2 / 2048 ± 4 Hz | |||
| Magnetic field sensitivity at 6 dB | 50 mA | |||
| Mode of operation: | Bandwidth -3 dB | Bandwidth -20 dB | ||
| – «1024 Hz» – «2048 Hz» – ACUST |
9+1 Hz 10+2 Hz 100 – 12000 |
10+2 Hz 12+4 Hz – |
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| Load
* Özellikler ve işlevler belirli pazara bağlı olarak farklılık gösterebilir |
16 – 100 Ohm (headphones)
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