Hioki 3157 AC Grounding HiTester

Supplied across UK & Ireland through APC Technology Group.

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