Fluke 1623-2 and 1625-2 GEO Earth Ground Testers Technical Data The new Fluke 1623-2 and 1625-2 GEO Earth Ground Testers offer data storage and download capabilities via USB port. World class accessories will simplify and speed up testing time. Product features: * 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 Professional carrying case rod and each are connected to the tester. No earth ground stakes are * USB data storage and transfer used at all. A known, fixed voltage is induced by one clamp and the In addition, the Fluke 1625-2 current is measured using the offers these advanced features: second clamp. Then the tester automatically determines the * Automatic Frequency Control resistance of the earth ground rod. (AFC) - identifies existing This test method only works interference and chooses if a bonded earth ground system a measurement frequency exists for the building or structure to minimize its effect, under test, but most are. If there providing more accurate is only one path to ground, like at many residential applications, the earth ground value Stakeless method will not provide * R* measurement - calculates an acceptable value and the Fall earth ground impedance at of Potential test method must 55 Hz to more accurately be used. reflect the earth ground With Stakeless testing, the resistance that a fault-toearth ground rod does not need to be disconnected--leaving the earth ground would see bonded earth ground system * Adjustable limits - for intact during test. Gone are the quicker testing days of spending time placing and connecting stakes for each Stakeless testing earth ground rod on your system-- The Fluke 1623-2 and 1625-2 a major time saver. You can also earth ground testers are able to perform earth ground tests in measure earth ground loop resisplaces you've not considered tances using only clamps. With before: inside buildings, power this test method, two clamps are pylons, or anywhere you don't placed around the earth ground have access to soil. * The most complete testers The Fluke 1623-2 and 1625-2 are distinctive earth ground testers that can perform all four types of earth ground measurement: * 3- and 4-Pole Fall of Potential (using stakes) * 4-Pole Soil Resistivity testing (using stakes) * Selective testing (using 1 clamp and stakes) * Stakeless testing (using 2 clamps only) The testers are also easy to use. For each test, the testers inform you which stakes or clamps need to be connected and the large rotary switch can be used even with a gloved hand. The complete model kit comes with the 1623-2 or 1625-2 tester, test leads, 4 earth ground stakes, 3 cable reels with wire, 2 clamps, batteries, and manual-- all inside a professional Fluke carrying case. 1623-2 Specifications General Display:1999 digit LCD Display with special symbols, digit height 25 mm User interface Instant measurement through TURN and START one button concept. The only operating elements are rotary switch and START button Robust, water and dust resistant Instrument is designed for tough environmental conditions (rubber protective cover, IP56) Memory Internal memory storage up to 1500 records accessible via USB port Temperature ranges Operating temperature -10 C to 50 C (14 F to 122 F) -30 C to +60 C (-22 F to +140 F) Storage temperature Temperature coefficient 0.1 % of reading/C <18 C >28 C 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. IEC61010-1: 300V CAT II, Pollution degree 2 EMC (Emission Immunity) IEC61326-1: Portable 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 V ext rejection > 120 dB (1623, 50, 60, 400 Hz) Measuring time Typical 6 sec. Max. overload 250 V rms (pertains to misuse) Auxiliary power 6 x 1.5 V alkaline (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 7.6 kg (16.8 lb) including accessories and batteries in carrying case RA 3-pole ground resistance measurement (IEC 1557-5) Switch position Resolution Measuring range Accuracy Operating error RA 3-pole 0.001 to 10 0.020 to 19.99 k (2 % rdg + 3 d) (5 % rdg + 3 d) For 2-pole measurements connect terminals H and S with the supplied connector cable. 2 Fluke Corporation 1623-2 and 1625-2 GEO Earth Ground Testers Measuring principle: Current and voltage measurement Measuring voltage Short-circuit current Measure frequency Probe resistance (RS) Vm = 48 V ac > 50 mA 128 Hz Auxiliary earth electrode resistance (RH) Max. 100 k Additional error from RH and RS RH[k] * * * RS[k]/RA[] * * * 0.2 % Max 100 k Monitoring of RS and RH with error indicator Automatic range selection Measurement is not performed if the current through the current clamp is too low RA 4-pole ground resistance measurement (IEC 1557-5) Switch position Resolution Measuring range Accuracy Operating error RA 4-pole 0.001 to 10 0.020 to 19.99 k (2 % rdg + 3 d) (5 % rdg + 3 d) Measuring principle: Current/voltage measurement Measuring voltage Short-circuit current Measuring frequency Probe resistance (RS+ RES) Vm = 48 V ac > 50 mA 128 Hz Auxiliary earth electrode resistance (RH) Max. 100 k Additional error from RH and RS RH[k] * * * RS[k/RA[] * * * 0.2 % Max. 100 k Monitoring of RS, and RH with error indicator Automatic range selection RA 3-pole selective ground resistance measurement with current clamp (RA ) Switch position Resolution Measuring range Accuracy Operating error RA 3-pole 0.001 to 10 0.020 to 19.99 k (7 % rdg + 3 d) (10 % rdg + 5 d) Measuring principle: Current/voltage measurement (with external current clamp) Measuring voltage Short-circuit current Measuring frequency Probe resistance (RS) Vm = 48 V ac > 50 mA 128 Hz Auxiliary earth electrode resistance (RH) Max. 100 k Max. 100 k Monitoring of RS, and RH with error indicator Automatic range selection Measurement is not performed if the current through the current clamp is too low RA 4-pole selective ground resistance measurement with current clamp (RA ) Switch position Resolution Measuring range Accuracy Operating error RA 4-pole 0.001 to 10 0.020 to 19.99 k (7 % rdg + 3 d) (10 % rdg + 5 d) 3 Fluke Corporation 1623-2 and 1625-2 GEO Earth Ground Testers Measuring principle: Current/voltage measurement (with external current clamp) Measuring voltage Short-circuit current Measuring frequency Probe resistance (RS) Vm = 48 V ac > 50 mA 128 Hz Auxiliary earth electrode resistance (RH) Max. 100 k Max. 100 k Monitoring of RS, and RH with error indicator Automatic range selection Measurement is not performed if the current through the current clamp is too low Stakeless ground loop measurement ( Switch position RA 4-pole ) Resolution Measuring range 0.001 to 0.1 0.020 to 199.9 Accuracy (7 % rdg + 3 d) Operating error (10 % rdg + 5 d) Measuring principle: Stakeless measurement of resistance in closed loops using two current transformers Measuring voltage Measuring frequency Noise current (IEXT) Vm = 48 V ac (primary) 128 Hz Max. IEXT = 10 A (ac) (RA < 20 ) Max. IEXT = 2 A (ac) (RA > 20 ) Automatic range selection The information regarding stakeless ground loop measurements is only valid when used in conjunction with the recommended current clamps at the minimum distance specified. 4 Fluke Corporation 1623-2 and 1625-2 GEO Earth Ground Testers octo Reference Image 1625-2 Specifications General Memory Measuring function Display Operation Internal memory storage up to 1500 records accessible via USB port Interference voltage and frequency, earthing resistance 3- and 4-pole with/without clip-on current transformer, resistance 2-pole with ac, 2- and 4-pole with dc 4 digit (2999 Digit) - 7 segment liquid crystal display, with improved visibility Central rotary switch and function keys VA VmA k Hz nFmH ST E 12MKH Test Limit E ES S H Temperature ranges Operating temperature range Storage temperature range -10 C to 50 C (14 F to 122 F) -30 C to 60 C (-22 F to 140 F) Temperature coefficient 0.1 % of range/ 0.1 % of reading/C <18 C >28 C IP56 for case, IP40 for battery door according to EN60529 Type of protection Max voltage ! socket Urms = 0 V Sockets " EMC (Emission Immunity) Quality standard External field influence Auxiliary power Battery life span Dimensions (WxHxD) Weight 5 Fluke Corporation " to each other in any combination, max. Urms = 250 V (pertains to misuse) 1:1Protection Artwork by double and/or reinforced insulation. Max. 50 V to earth per IEC61010-1. 300V CAT II, Safety: Case material to socket Pollution degree 2 IEC61326-1: Portable Developed, designed and manufactured to comply with DIN ISO 9001 Complies with DIN 43780 (8/76) 6 x 1.5 V alkaline (IEC LR6 or type AA ) With IEC LR6/type AA: typ. 3,000 measurements (RE+RH 1 k) With IEC LR6/type AA : typ. 6,000 measurements (RE + RH > 10 k) 250 mm x 133 mm x 187 mm (9.75 in x 5.25 in x 7.35 in) 1.1 kg (2.43 lb) without accessories 7.6 kg (16.8 lb) including accessories and batteries in carrying case Polyester 1623-2 and 1625-2 GEO Earth Ground Testers Measurement of interference voltage dc + ac (UST) Fullwave rectification Measuring Limits of error: method Measuring Range 1 V to 50 V Display Range 0.0 V to 50 V Measuring sequence Internal resistance approx. 4 measurements/s Max. overload Resolution 0.1 V Frequency Range dc/ac 45 Hz to 400 Hz sine Limits of Error (5 % of rdg + 5 digit) approx. 1.5 M Urms = 250 V Measurement of interference frequency (F ) Measuring method Measurement of oscillation period of the interference voltage Measuring Range 6.0 Hz to 400 Hz Display Range 16.0 Hz to 299.9 Hz to 999 Hz Resolution 0.1 Hz to 1 Hz Range 1 V to 50 V Accuracy (1 % of rdg + 2 digit) Earthing resistance (RE) Measuring method Open circuit voltage Short circuit current Measuring frequency Noise rejection Max. overload Current and voltage measurement with probe as IEC61557-5 20/48 V, ac 250 mA ac 94, 105, 111, 128 Hz selected manually or automatic. (AFC) 55 Hz in function R* 120 dB (162/3, 50 , 60, 400 Hz) Urms = 250 V Electrical measurement specifications Reference conditions or specified operating range Intrinsic error Position Supply voltage Reference conditions Reference position 90 At the limits stated by the manufacturer 0 C and 35 C See 4.2 and 4.3 A E1 E2 Part 5, 6.1 Part 1, 4.2 Part 1, 4.2, 4.3 R R R E3 E4 Part 1, 4.2 Part 5, 4.2, 4.3 T T 0 to 100 x RA but 50 k E5 Part 5, 4.3 T 99 % to 101 % of the nominal frequency 85 % to 110 % of the nominal voltage E7 Part 5, 4.3 T E8 Part 5, 4.3 Part 5, 4.3 T R Temperature Series interference voltage Resistance of the probes and auxiliary earth electrodes System frequency System voltage Operating error A En R T = = = = intrinsic error variations routine test type test 6 Fluke Corporation 1623-2 and 1625-2 GEO Earth Ground Testers Designation code Requirements or test in accordance with the relevant parts of IEC 1557 Intrinsic error or influence quantity Type of test Measuring Range Display Range Resolution 0.020 to 0.001 to 2.999 0.001 300 k 3.00 to 29.99 0.01 30.0 to 299.9 0.1 0.300 k to 2.999 k 1 3.00 k to 29.99 k 10 30.0 k to 299.9 k 100 Accuracy Operating Error ( 2 % of rdg + 2 digit ) ( 5 % of rdg + 5 digit ) typ. 8 sec. with a fixed frequency 30 sec. max. with AFC and complete cycle of all measuring frequencies Measuring time Additional error because of probe-and auxiliary earth electrode resistance Measuring error of RH and RS Max. probe resistance typ. 10 % of R E + R S + R H Max. auxiliary earth electrode resistance 1 M 1 M Automatic check if error is kept within the limits required by IEC61557-5. If after a measurement of probe-, auxiliary earth electrode- and earthing resistance, a measurement error of higher than 30 % is assumed because of the influencing conditions (see diagram), the display shows a warning symbol ! and a notice that RS or RH are too high. Automatic switchover of measuring resolution in dependence to auxiliary earth electrode resistance RH RH with Umeas = 48 V RH with Umeas = 20 V Resolution < 300 < 250 1 m < 6 k < 2.5 k 10 m < 60 k < 25 k 100 m < 600 k < 250 k 1 Selective measurement of the earthing resistance (RE ) Measuring method Open circuit voltage Short circuit current Measuring frequency Noise rejection Max. overload Current and voltage measurement with probe as per EN61557-5 and current measurement in the individual branch with additional current transformer (patent applied for). 20/48 V ac 250 mA ac 94, 105, 111, 128 Hz selected manually or automatically (AFC), 55 Hz (R*) 120 dB (162/3, 50, 60, 400 Hz) Max. Urms = 250 V (measurement will not be started) Measuring Range Display range Resolution 0.020 to 30 k 0.001 to 2.999 0.001 3.00 to 29.99 0.01 30.0 to 299.9 0.1 0.300 to 2.999 k 1 3.00 to 29.99 k 10 * With recommended current clamps/transformers. 7 Fluke Corporation 1623-2 and 1625-2 GEO Earth Ground Testers Intrinsic error* (7 % of rdg + 2 digit) Operating error* (10 % of rdg + 5 digit) Additonal error because of probe- and auxiliary earth typ. electrode resistance Typ. of 10 % of R ETOTAL + R S + R H Typ. 8 sec. with a fixed frequency 30 sec. max. with AFC and complete cycle of all measuring frequencies 0.5 mA With transformer (1000:1) 0.1 mA With transformer (200:1) 3A With a transformer (1000:1) Measuring error of RH and RS Measuring time Minimal current in single branch to be measured Max. interference current through transformer Resistance measurement (R~) Current and voltage measurement 20 V ac, square pulse > 250 mA ac 94, 105, 111, 128 Hz selected manually or automatically (AFC) Measuring method Measuring voltage Short circuit current Measuring frequency Measuring range Display range Resolution 0.020 to 300 k 0.001 to 2.999 0.001 3.0 to 29.99 0.01 30 to 299.9 0.1 300 to 2999 1 3.0 k to 29.99 k 10 30.0 k to 299.9 k 100 Measuring time Max. interference voltage Max overload Accuracy (2 % of rdg + 2 digit) Operating errors (5 % of rdg + 5 digit) typ. 6 sec. 24 V, with higher voltages measurement will not be started Urms max. = 250 V Resistance measurement (R ) Measuring method Open circuit voltage Short circuit current Formation of measured value Measuring range 0.020 to 3 k Display range 8 Fluke Corporation Resolution 0.001 to 2.999 0.001 3.0 to 29.99 0.01 30.0 to 299.9 0.1 300 to 2999 1 Measuring sequence Measuring time Max. interference voltage Max inductivity Max. overload current- voltage measurement as per IEC61557-4 possible 20 V dc 200 mA dc with 4-pole measurement wires on H, S, ES can be extended without additional error. Resistances > 1 in wire E can cause additional error of 5m /. Accuracy (2 % of rdg + 2 digit) Approx. 2 measurements/s Typ. 4 sec. incl. reversal of polarity (2-pole or 4-pole) 3 V ac or dc, with higher voltages measurement will not be started 2 Henry Urms = 250 V 1623-2 and 1625-2 GEO Earth Ground Testers Operating error (5 % of rdg + 5 digit) Compensation of lead resistance (RK) Compensation of lead resistance (RK) can be switched on in functions RE 3-pole, RE 4-pole Formation of measured value Rdisplay = Rmeasured - Rcompensated* , R~ , and R 2-pole * Value of setpoint entry RK = 0.000 , variable from 0.000 to 29.99 by means of measuring adjustment. Stakeless ground loop measurement ( Switch position RA 4-pole ) Resolution Measuring range 0.001 to 0.1 0.02 to 199.9 Accuracy (7 % rdg + 3 d) Operating error (10 % rdg + 5 d) Measuring principle: Stakeless measurement of resistance in closed loops using two current transformers Measuring voltage Measuring frequency Noise current (IEXT) Vm = 48 V ac (primary) 128 Hz Max. IEXT = 10 A (ac) (RA < 20 ) Max. IEXT = 2 A (ac) (RA > 20 ) Automatic range selection The information regarding stakeless ground loop measurements is only valid when used in conjunction with the recommended current clamps at the minimum distance specified. 9 Fluke Corporation 1623-2 and 1625-2 GEO Earth Ground Testers Selection guide by user Industrial Maintenance Technician Field Service Technician * Fluke 1623-2 Power Utilities and Telecom * * Fluke 1625-2 * Standard earth ground test methods Fall of Potential 3-pole 4-pole/soil Fluke 1623-2 Fluke 1625-2 * * * * Selective 1 clamp Stakeless 2 clamps * * * * Ordering information Fluke-1623-2 Kit Fluke-1623-2 EI-1623 Fluke-1625-2 Kit Fluke-1625-2 EI-1625 Basic GEO Earth Ground Tester Kit Basic GEO Earth Ground Tester Selective/Stakeless Clamp Set for 1623 Advanced GEO Earth Ground Tester Kit Advanced GEO Earth Ground Tester Selective/Stakeless Clamp Set for 1625 Optional accessories ES-162P3-2 ES-162P4-2 EARTH STAKE CABLE REEL 25M BL CABLE REEL 25M GR CABLE REEL 50M RD EI-162BN EI-162X EI-162AC Stake Set for 3-Pole Measurement Stake Set for 4-Pole Measurement Ground/Earth Stake Ground/Earth Cable Reel 25 m (81.25 ft) Ground/Earth Cable Reel 25 m (81.25 ft) Ground/Earth Cable Reel 50 m (162.5 ft) 320 mm (12.6 in) Split Core Transformer Clip-on Current Transformer (Sensing) with Shielded Cable Set Clip-on Current Transformer (Inducing) Fluke. The Most Trusted Tools in the World. Fluke Corporation PO Box 9090, Everett, WA 98206 U.S.A. Fluke Europe B.V. PO Box 1186, 5602 BD Eindhoven, The Netherlands For more information call: In the U.S.A. (800) 443-5853 or Fax (425) 446-5116 In Europe/M-East/Africa +31 (0) 40 2675 200 or Fax +31 (0) 40 2675 222 In Canada (800)-36-FLUKE or Fax (905) 890-6866 From other countries +1 (425) 446-5500 or Fax +1 (425) 446-5116 Web access: http://www.fluke.com (c)2013 Fluke Corporation. Specifications subject to change without notice. Printed in U.S.A. 11/2013 2634980C-EN Modification of this document is not permitted without written permission from Fluke Corporation. 10 Fluke Corporation 1623-2 and 1625-2 GEO Earth Ground Testers