earth ground tester for resistance measurement

the fluke 1621 is an easy-to-use earth ground tester. for ground resistance testing, the 1621 is the first line of defense in detecting reliable ground connections. the unit features basic ground testing methods including 3-pole fall-of-potential as well as 2-pole ground resistance tests. its convenient size, rugged holster, and large, clear lcd display make it an ideal field earth ground tester, for most electrical grounding work environments. with a simple user interface and intuitive functionality, the fluke 1621 is a handy grounding tool for electrical contractors, utility test engineers, and earth ground specialists.

general specifications
卡塔尔世界杯中国足球赛事 functions	3-pole earth ground resistance, 2-pole ac resistance of a conductor, interference voltage
intrinsic error	refers to the reference temperature range and is guaranteed for one year
卡塔尔世界杯中国足球赛事 rate	2 measurements/second
battery[1]	one 9 volt alkaline (lr61)
battery condition	lo-bat is displayed if voltage drops below 6.5 v
voltages	between jacks h/c2 and e/c1: 250 veff maximum (effective voltage) between jacks s/p2 and e/c1: 250 veff maximum
climatic class	vde/vdi 3540 rz (conforming to kwg as per din 40040, 4/87)
temperature performance[2]	working: -10 °c to +50 °c (+14 °f to +122 °f) operating: 0 °c to +35 °c (+32 °f to +95 °f) storage: -20 °c to +60 °c (+68 °f to +140 °f) reference: +23 °c ± 2 °c (+73 °f ± 4 °f)
temperature coefficient	± 0.1 % of range per degree kelvin
safety	iec/en 61010-1, 600 v cat ii, pollution degree 2
dimensions	113 mm x 54 mm x 216 mm (4.5 in x 2.1 in x 8.5 in), including holster
weight	850 g (1.9 lb), including standard accessories, volume approximately 600 cm3
note:	[1]if the tester is not going to be used, or is being stored for a long period, remove the battery and store separately from the tester to avoid damage from battery leakage.
note:	[2]the four temperature ranges for the tester exists to satisfy european standards requirements; the instrument can be used over the full working temperature range by using the temperature coefficient to calculate accuracy at the ambient temperature of use.

electrical specifications
maximum deviations:	e1influence factor position e1deviation influence 0 % e2influence factor supply voltage e2deviation influence 0 % e3influence factor temperature e3 e3deviation influence 2.3 % e4influence factor serial interference voltage (20 v) e4deviation influence 0.6 % e5influence factor probe- and auxiliary probe resistance e5deviation influence 10 %
test voltage	3.7 kv
protection type	ip 40; iec/en 60529
electromagnetic compatibility	emission: iec/en 61326 class b immunity: iec/en 61326 annex c
reresistance measurement	卡塔尔世界杯中国足球赛事 method current-voltage measurement with improved cross-talk attenuation, no compensation of 卡塔尔世界杯中国足球赛事 lead resistance, with probe (3-pole) or without probe (2-pole), as per iec/en 61557-5 open circuit voltage 23 to 24 v ac short circuit current > 50 ma ac 卡塔尔世界杯中国足球赛事 frequency 128 hz maximum permissible overload 250 veff
卡塔尔世界杯中国足球赛事 time	8 seconds (average from when start is pressed)
limit input	tester retains set value even if instrument is turned off (assuming battery power supply is sufficient)
automatic changeover of resolution	rh < 7 kω resolution 0.01 ω rh < 50 kω resolution 0.1 ω rh > 50 kω resolution 1 ω
interference voltage display dc + ac	vmax 30 veff common mode rejection > 80 db at 50 hz and 60 hz ri 680 kω 卡塔尔世界杯中国足球赛事 uncertainty < 10 % for pure ac and dc signals

卡塔尔世界杯中国足球赛事 range
0.15 ω to 20 ω	resolution 0.01 ω display range 0 to 19.99 ω
200 ω	resolution 0.1 ω display range 20 to 199.9 ω
2 kω	resolution 1 ω display range 200 to 1999 ω
intrinsic uncertainty	± (6 % of measured value + 5d)
operating uncertainty iec 61557[1]	± (18 % of measured value + 5d)
notes:	[1] covers all deviations caused by influence quantities e1-e5. if the deviation e4caused by high probe or auxiliary probe resistance is higher than specified flashes. measured values are outside of the specified operating uncertainty.