The Italy HT HT2055 Large Ground Grid Earth Resistance Tester and Step Voltage Tester consists of a power supply station and a meter, used for performing step/contact voltage measurements on electrical installations.
Product Introduction of Italy HT HT2055 Large Ground Grid Earth Resistance Tester and Step Voltage Tester:
The HT2055 produced by Italy's HT company is a relatively new earth resistance tester. The HT2055 consists of a power supply station and a meter, used for performing step/contact voltage measurements on electrical installations such as high-voltage substations (TN systems, substations), with a rated test current up to 50A according to international standards. The two component units of the instrument are initially synchronized in time and current to perform precise calculation steps and measure the voltage value of the power station in conjunction with the actual test current. The instrument's internal DSP filter can automatically compensate for voltage interference caused by noise. The instrument also allows measurement of earth resistance of large ground grids using the 3-wire method and earth (soil) resistivity using the 4-wire method. All test results can be saved to internal memory and downloaded to a PC via software.
Product Features of Italy HT HT2055 Large Ground Grid Earth Resistance Tester and Step Voltage Tester:
Step/contact voltage measurement via independent units
Synchronization between units
Test current up to 50A
LCD dot matrix display on both units
Earth resistance measurement and earth resistivity measurement
USB and RS-232 conversion port for communication between units and PC
DSP filter for noise interference compensation
Dedicated Windows software
Product Parameters of Italy HT HT2055 Large Ground Grid Earth Resistance Tester and Step Voltage Tester:
HT2055 Technical Specifications Accuracy calculation: [% reading + digit * resolution] | ||
Step/Contact Voltage | ||
Measurement Voltage Range | Resolution | Accuracy |
0.01 - 19.99mV | 0.01mV | ±(2.0%rdg + 2dgt) |
20.0 - 199.9mV | 0.1mV | |
200 - 1999mV | 1mV | |
2.00 - 19.99V | 0.01V | |
20.0 - 59.9V | 0.1V | |
Calculated Voltage Range | Resolution | Accuracy |
0.0 - 199.9V | 0.1V | Calculated value(*) |
200 - 999V | 1V | |
(*) The calculated value of step/contact voltage is obtained by the following formula: US=Umis ∙Iflt/Igen; UC=Umis ∙Iflt/Igen; Full current range (selectable): 10A - 200kA Input impedance (selectable): 1kΩ, 1MΩ Noise rejection: DSP 55Hz filtering, 64dB rejection of 50/60Hz noise | ||
Generated Current Range | Resolution | Accuracy |
0.01 - 19.99A | 0.01A | ±(2.0%rdg + 2dgt) |
20.0 - 50.0A | 0.1A | |
Earth Resistance Measurement (3-wire method) | ||
Range | Resolution | Accuracy |
0.01 - 19.99Ω | 0.01Ω | ±(2.0%rdg + 2dgt) |
20.0 - 199.9Ω | 0.1Ω | |
200 - 1999Ω | 1Ω | |
2.00 - 19.99kΩ | 0.01kΩ | |
Earth Resistivity Measurement (4-wire method) | ||
Range | Resolution | Accuracy |
0.01 - 19.99Ωm | 0.01Ωm | ±(2.0%rdg + 2dgt) |
20.0 - 199.9Ωm | 0.1Ωm | |
200 - 1999Ωm | 1Ωm | |
2.00 - 19.99kΩm | 0.01kΩm | |
General Specifications | ||
Power Supply | Mains | 230V ±10%, 50/60Hz |
Battery | Rechargeable battery | 6V 4.5Ah |
Display | LCD dot matrix | 128x64 pixels |
Memory | Internal memory | Up to 1000 records |
Communication | USB and RS-232 | For PC connection |
Safety | IEC/EN 61010-1 | CAT IV 50V, CAT III 100V |
Dimensions | Unit 1 (generator) | 300 x 250 x 140 mm |
| Unit 2 (meter) | 200 x 150 x 80 mm |
Weight | Unit 1 (generator) | 5.5 kg |
| Unit 2 (meter) | 1.2 kg |
