Fluke 1623 and 1625 GEO Earth Ground Testers Technical Data The new Fluke 1623 and 1625 GEO Earth Ground Testers offer an innovative solution, called Stakeless testing, to make your earth ground loop resistance testing quicker and easier. No need for a separate earth ground clamp. 3- and 4-pole Fall of Potential, earth resistance loop testing 4-pole Soil Resistivity testing Selective earth ground rod testing using 1 clamp Stakeless earth ground rod testing using 2 clamps IP56 rated for outdoor use Rugged carrying case In addition, the Fluke 1625 offers these advanced features: Automatic Frequency Control (AFC) - identifies existing interference and chooses a measurement frequency to the building or structure under test, but Stakeless testing most are. If there is only one path to minimize its effect, providing The Fluke 1623 and 1625 earth ground, like at many residential appli- more accurate earth ground ground testers are able to measure cations, the Stakeless method will not value earth ground loop resistances using provide an acceptable value and the Fall R* measurement - calculates only clamps. With this test method, of Potential test method must be used. two clamps are placed around the earth ground impedance at With Stakeless testing, the earth earth ground rod and each are con- 55 Hz to more accurately ground rod does not need to be dis- nected to the tester. No earth ground reflect the earth ground connectedleaving the bonded earth stakes are used at all. A known, fixed ground system intact during test. Gone resistance that a fault-to- voltage is induced by one clamp and are the days of spending time placing earth ground would see the current is measured using the and connecting stakes for each earth Adjustable limits - for quicker second clamp. Then the tester auto- ground rod on your systema major testing matically determines the resistance time saver. You can also perform earth of the earth ground rod. ground tests in places youve not This test method only works if a considered before: inside buildings, bonded earth ground system exists for power pylons, or anywhere you dont have access to soil.The testers are also easy to use. For each test, The most complete testers the testers inform you which stakes or clamps need The Fluke 1623 and 1625 are distinctive earth to be connected and the large rotary switch can be ground testers that can perform all four types of used even with a gloved hand. earth ground measurement: The complete model kit comes with the 1623 3- and 4-Pole Fall of Potential (using stakes) or 1625 tester, test leads, 4 earth ground stakes, 4-Pole Soil Resistivity testing (using stakes) 3 cable reels with wire, 2 clamps, batteries, and Selective testing (using 1 clamp and stakes) manualall inside a rugged Fluke carrying case. Stakeless testing (using 2 clamps only) 1623 Specifications General Display:1999 digit LCD Display with special symbols, digit height 25 mm, fluorescent backlight User interface Instant measurement through TURN and START one button concept. The only operating elements are rotary switch and START button Robust and waterproof Instrument is designed for tough environmental conditions (rubber protective cover, IP56) Temperature ranges Working temperature -10 C to 50 C (14 F to 22 F) Operating temperature 0 C to 35 C (32 F to 95 F) Storage temperature -20 C to 60 C (-4 F to 140 F) Reference temperature 23 C to 2 C (73 F to 4 F) The chart of four temperature ranges for the instrument exist 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. Temperature coefficient 0.1 % of reading/K Intrinsic error Refers to the reference temperature range and is guaranteed for 1 year Operating error Refers to the operating temperature range and is guaranteed for 1 year Climatic class C1 (IEC 654-1), -5 C to +45 C (23 to +115 F), 5 % to 95 % RH Protective type IP56 for case, IP40 for battery door according to EN60529 Safety Protection by double and/or reinforced insulation. max. 50 V to earth EMC (Emission Immunity) IEC 61326-1:1997 Class A Quality system Developed, designed and manufactured according to DIN ISO 9001 External voltage V ext, max = 24 V (dc, ac < 400 Hz), measurement inhibited for higher values 2 V ext rejection > 120 dB (16 3, 50, 60, 400 Hz) Measuring time Typical 6 sec. Max. overload 250 V rms (pertains to misuse) Auxiliary power 6 x 1.5 V mignon cells alkali-manganese (type AA LR6) Battery life span Typical > 3,000 measurements Dimensions (WxHxD) 250 mm x 133 mm x 187 mm (9.75 in x 5.25 in x 7.35 in) Weight 1.1 kg (2.43 lb) including batteries 2 Fluke Corporation 1623 and 1625 GEO Earth Ground Testers