The Extech CT70 AC Circuit Analyzer can detect circuit and wiring problems such as: Poor ground impedance, false grounds, missing ground fault protection, low voltage availability under load, and high ground-to-neutral voltage. In addition, the CT70 tests GFCI and EPD circuits.
Circuit and wiring issues listed above can introduce shock hazards (from grounding issues) and can comprise performance of machinery and equipment (from poor ground impedance, lack of sufficient voltage under load and/or high ground-to-neutral voltage). In addition, fire can result from the heat generated by high resistance points in a circuit.
Proper wiring habits have been shown to greatly increase power quality performance
Extech CT70 AC Circuit Analyzer Features
- True RMS measurements
- Voltage drop measurements on 12A, 15A, and 20A loads for 120 V circuits
- Voltage drop measurements on 5A, 8A, and 10A loads for 230 V circuits
- Voltage measurements: Line, ground-to-neutral, and peak
- Measures frequency of the voltage
- Checks 3-wire receptacle configuration
- Finds false grounds
- Tests GFCI and EPD circuits
- Complete with AC test cord (standard New Zealand 3 pin 10A plug).
Extech CT70 Measurement Specifications |
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| Range and Resolution | Accuracy | |
| Line Voltage (Single phase) | 100.0 to 250.0 VAC | ± (1.0% + 0.2V) |
| Peak Line Voltage | 121.0 to 350.0 VAC | ± (1.0% + 0.2V) |
| Frequency | 45.0 to 65.0 Hz | ± (1.0% + 0.2Hz) |
| Voltage drop (%) | 0.1 to 99.9% | ± (2.5% + 0.2%) |
| Voltage (under load) | 10.0 to 250.0 VAC | ± (2.5% + 0.2V) |
| Neutral to Ground Voltage | 0.0 to 10.0 VAC | ± (2.5% + 0.2V) |
| Impedance | 0.00 to 3.00 Ω (Hot) | ± (2.5% + 0.02Ω) |
| >3 Ω (Neutral, Ground) | Unspecified | |
| GFCI Trip Current | 6.0 to 9.0mA | ± (1.0% + 0.2mA) |
| EPD Trip Current | 30.0 to 37.0mA | ± (1.0% + 0.2mA) |
General Specifications |
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| Display | 128 x 64 LED with backlighting |
| Voltage display update rate | 2.5 seconds max. |
| Over range indication | ‘OL’ display |
| Equipment Power Rating | 100 to 250 VAC 3.9 VA, 45 to 65Hz, 18.0mA |
| Operating Temperature | 0°C to 50°C |
| Operating Humidity | Max 80% |
| Dimensions | 203 x 71 x 51 mm |
| Weight | 317.5g |
| Safety approvals | CE, ETL |
