Hioki 3157 AC Grounding HiTester
The Hioki 3157 AC Grounding HiTester is an AC ground bond tester designed for protection circuit testing of a wide range of electrical equipment. Some of its key features include compliance with international safety standards and laws, constant-current testing with feedback control, a soft-start function, and a fluorescent tube display 1.
It has a current setting range of 3.0 A to 31.0 A AC (0.1 A resolution), into 0.1Ω load, and a maximum output power of 130 VA (at output terminals) 2. Its resistance measurement range is 0 to 1.800 Ω (0.001 Ω resolution), with an accuracy of ±2% rdg. ±4 dgt. after zero-adjust
Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)
| Basic functions | AC 4-terminal method resistance measurement |
|---|---|
| Display | Fluorescent tube (digital display) |
| Current setting range | 3.0 A to 31.0 A AC (0.1 A resolution), into 0.1 Ω load |
| Max. output power | 130 VA (at output terminals) |
| Open-terminal voltage | Max. 6 V AC |
| Generator frequency | 50 Hz or 60 Hz sine wave (selectable) |
| Resistance measurement | 0 to 1.800 Ω (0.001 Ω resolution), Accuracy: ±2% rdg. ±4 dgt. after zero-adjust |
| Voltage measurement | 0 to 6.00 V AC (single range 0.01 V resolution), Accuracy: (1 % rdg. +5 dgt.) |
| Monitor section | 0 to 35.0 A AC/ 0 to 6 V AC, Refresh rate: 2 times/s |
| Timer display | Counts down time after start until preset time, Shows elapsed time after start |
| Timer setting | 0.5 s to 999 s |
| Comparator | PASS/FAIL evaluation using preset upper/lower limit, buzzer sound, signal output |
| Memory function | Max. 20 settings (with save/load) |
| Interfaces | EXT I/O, EXT SW, GP-IB or RS-232C (option) |
| Power supply | 100 to 120 V/200 to 240 V AC (switching, 50/60 Hz) |
| Dimensions and mass | 320 mm (12.60 in)W × 90 mm (3.54 in)H × 263 mm (10.35 in)D, 7 kg (246.9 oz) |
| Accessories | Power cord ×1, Instruction Manual ×1, Spare fuse (inlet) ×1, Shorting bar ×2 |
