Hioki FT3151 Page 68 Instruction Manual Download

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Safety Notes

Safety Notes

This instrument is designed to conform to IEC 61010 Safety

Standards, and has been thoroughly tested for safety prior to

shipment. However, using the instrument in a way not described in

this manual may negate the provided safety features.

Before using the instrument, be certain to carefully read the

following safety notes:

DANGER

Mishandling during use could result in injury or death,

as well as damage to the instrument. Be certain that

you understand the instructions and precautions in

the manual before use.

WARNING

With regard to the electricity supply, there are risks

of electric shock, heat generation, fire, and arc flash

due to short circuits. Individuals using an electrical

measuring instrument for the first time should be

supervised by a technician who has experience in

electrical measurement.

Summary of Contents for FT3151

Page 1: ......

Page 2: ......

Page 3: ...i 1 1 2 4 8 1 11 1 1 11 1 2 11 1 3 13 1 4 16 1 5 Z5022 17 2 19 2 1 21 2 2 3 23 24 3 26 26 27 28 29 2 3 2 30 32 2 33 33 34 FT3151A980 01...

Page 4: ...ii 34 34 2 4 35 2 5 36 38 3 41 3 1 41 3 2 42 3 3 43 4 45 4 1 45 45 45 4 2 46 4 3 48 4 4 48 4 5 49 1 1 1 2 2 3 4...

Page 5: ...1 HIOKI FT3151 FT3151 1 L9840 1 2 1 6 mm 270 mm 235 mm SUS304 L9841 1 4 m L9842 11 1 10 m...

Page 6: ...2 L9842 22 1 20 m C0106 1 1 3 LR6 6 L9787 1 2 m CAT L9840 2 1 6 mm 270 mm 235 mm SUS304 L9841 4 m L9842 11 10 m L9842 22 20 m...

Page 7: ...3 L9843 51 50 m L9843 52 50 m L9844 3 1 2 m 9050 2 1 300 mm 300 mm C0106 Z5022...

Page 8: ...4 IEC 61010...

Page 9: ...5...

Page 10: ...6 DC AC EU WEEE EU f s rdg dgt f s rdg dgt 1...

Page 11: ...7 IEC61010 CAT CAT CAT CAT CAT 300 V CAT CAT CAT T CAT II CAT IV CAT III...

Page 12: ...8 2...

Page 13: ...9 3 1 p 41 IH...

Page 14: ...10 L9787 L9840 p 7...

Page 15: ...11 1 1 1 1 2 1 EN 61557 JIS C 1304 2002 IEC 61010 2 115 10 100 3 4 5 6 2 3 4 5 6 7...

Page 16: ...12 7 MEASURE 8...

Page 17: ...13 1 3 1 2 3 4 5 6 7 8 9 11 10 14 13 12 15 p 23 2 3 4 5 6 7...

Page 18: ...14 1 MEASURE 2 3 Poles 2 3 4 Hz 575 Hz 600 Hz 5 6 7 8 9 10 11 ADJUST 12 E 13 S P 14 H C 15...

Page 19: ...15 17 18 16 16 M3X6 17 18 E P C JIS C 1304 2012 3 E S H E S P H C JIS C 1304 IEC 61557 5 E E E P S S P C H H C 2 3 4 5 6 7...

Page 20: ...16 1 4 C0106...

Page 21: ...17 Z5022 1 5 Z5022 Z5022 2 3 4 5 6 7...

Page 22: ...18 Z5022...

Page 23: ...19 2 p 8 2 L9841 L9842 11 L9842 22 L9843 51 L9843 52 50 V 1 2 3 4 4 5 6 7...

Page 24: ...20 L9787 L9844...

Page 25: ...21 2 1 p 26 p 33 ADJUST MEASURE 1 2 3 4 4 5 6 7...

Page 26: ...22 1 3 Poles 3 2 Poles 2 2 3 MEASURE 0 0...

Page 27: ...23 3 2 2 3 50 V 3 2 3 p 25 2 E H C S P H C S P 20 A 1 2 3 4 4 5 6 7...

Page 28: ...24 3 CAT 300 V rms 0...

Page 29: ...25 3 1 5 3 10 m 10 m S P H C E 2 1 E 2 2 3 4 E S P 5 1 2 3 4 4 5 6 7...

Page 30: ...26 3 E S H 5 m 10 cm 3 Poles 3 Hz 575 Hz 600 Hz 575 600 MEASURE 4 2 p 46...

Page 31: ...27 3 V MEASURE MEASURE 10 V 1 2 3 4 4 5 6 7...

Page 32: ...28 3 1 H C H MEASURE S H CHECK 2 S P S MEASURE S H CHECK...

Page 33: ...29 3 1 10 100 MEASURE 100 Poles 2 p 43 17 8 f s 17 8 f s 1 1 78 1 1 78 0 1 78 0 1 2 3 4 4 5 6 7...

Page 34: ...30 2 2 3 2 85 V 50 V E E 300 V...

Page 35: ...31 2 L9787 L9841 L9842 11 L9842 22 L9843 51 L9843 52 2 2 TT D 100 Rx Ro B 10 3 1 2 3 4 4 5 6 7...

Page 36: ...32 2 2 V E E H C E E S P H C Ro 5 m E 2 A 1 5 m...

Page 37: ...33 2 2 Poles 2 Hz 575 Hz 600 Hz 575 600 MEASURE 4 2 p 46 1 2 3 4 4 5 6 7...

Page 38: ...34 2 V MEASURE H S MEASURE 10 100 MEASURE...

Page 39: ...35 2 4 1 2 3 H S 4 9050 9050 1 2 3 4 4 5 6 7...

Page 40: ...36 2 5 3 2 10 k A 1 H S 7 k...

Page 41: ...37 a E H C l m E S P x m E b S P E H C E H C Rx Rc a Rx E S P H C S P E H C b S P S P H C E H C S P H C 1 2 3 4 4 5 6 7...

Page 42: ...38 S P E H C E H C 5 m E H C 29 S P 5 m 5 m 29 S P H C E 9050...

Page 43: ...39 1 2 3 4 4 5 6 7...

Page 44: ...40 10 V 10 V 5 V Hz 575 600...

Page 45: ...m 2 EN61557 5 0 40 80 rh 10 50 80 rh IP40 EN60529 3 LR6 DC 1 5 V 6 2 5 VA 6 0 V 10 0 V 0 5 V 164W 119H 88D mm 760 g EN 61557 1 EN61557 5 EN 61010 EN 61010 EN 61010 EMC EN 61326 JIS C 1304 2002 p 1 p...

Page 46: ...42 3 2 0 1150 0 V 30 V 1 AC 50 V rms AC 15 mA rms 2 AC 3 mA rms 575 Hz 600 Hz 10 3 2 3 S P E 2 H C E AC 300 V 2500 V AC 250 V 1 E S P E H C 1100 30 30 3 575 Hz 100 1 10 AC 85 V...

Page 47: ...000 0 11 5 0 115 0 1150 10 100 1000 A 0 25 2 5 f s 2 5 2 5 f s 25 2 5 f s 2 100 1000 E1 90 1 0 E2 DC 6 V 10 V 0 5 E3 0 C 40 C 1 0 VE E4 50 Hz 60 Hz 0 V VE 5 V 1 0 5 V VE 10 V 2 0 DC 16 2 3 Hz 400 Hz 0...

Page 48: ...44 E5 0 100 RA 5 k S H 1 0 RA E6 E7 E8 400 A m 50 Hz 60 Hz 0 5 B 17 8 f s V 30 V 0 V 30 V 3 0 f s 1 0 0 C 40 C...

Page 49: ...45 4 4 4 1 1 2 3 5 6 7...

Page 50: ...46 4 2 3 LR6 6...

Page 51: ...47 4 A B 1 2 3 A 4 6 5 B 6 1 2 3 5 6 7...

Page 52: ...48 4 3 4 4 4 5 p 49...

Page 53: ...49 4 4 5 MEASURE MEASURE 0 S H E H S 0 1 2 3 5 6 7...

Page 54: ...50 2 2 2 1 2 10 0...

Page 55: ...1 1 Hz 1 kHz E S P H C 10 m 1 2 3 4 5 6 7...

Page 56: ...2 2 1 3 I Rc Rx C T E S P Ex E S Rs Es Ex IRx Es IRs n n C T Ex Es Rx Rs n Rs 1 n Rx S P H C Rp Rc Rx Rs S E 3...

Page 57: ...3 2 2 2 Ro Rx 3 Rx Ro Rs n Ro Rx S P H C Ro Rx Rs S E 2 1 2 3 4 5 6 7...

Page 58: ...4 3 A 1 10 B 2 1 C 3 10 2 D 3 100 2 1 150 35000 V 150 V 1 2 35000 V 300 1 35000 V 600 2 0 5 500...

Page 59: ...16 09 JA...

Page 60: ......

Page 61: ...FT3151 Instruction Manual ANALOG EARTH TESTER Aug 2017 Revised edition 1 FT3151A980 01 EN...

Page 62: ......

Page 63: ...21 2 1 Inspection Before Use 23 2 2 Measuring Earth Resistance Precisely Precise Measurement 3 Pole Measurement Method 25 Connecting measurement cables 26 Settings for 3 pole measurement 29 Battery ch...

Page 64: ...iary earthing rods 42 3 Specifications 45 3 1 General Specifications 45 3 2 Basic Specifications 46 3 3 Measuring Range and Tolerances 48 4 Maintenance and Service 51 4 1 Repair Check Up Cleaning 51 C...

Page 65: ...nel buttons and connectors If damage is evident or if it fails to operate according to the specifications contact your authorized Hioki distributor or reseller Check the package contents as follows FT...

Page 66: ...utor or reseller when ordering L9787 Test Lead for simplified measurement method indoor use only red and black 1 2 m each Not classified in accordance with the measurement category L9840 Auxiliary Ear...

Page 67: ...rement method yellow 50 m equipped with flat cable winder L9843 52 Measurement Cable for precise measurement method red 50 m equipped with flat cable winder L9844 Measurement Cable for earthing termin...

Page 68: ...ly read the following safety notes DANGER Mishandling during use could result in injury or death as well as damage to the instrument Be certain that you understand the instructions and precautions in...

Page 69: ...esult in minor or moderate injury to the operator or damage to the instrument or malfunction IMPORTANT Indicates information related to the operation of the instrument or maintenance tasks with which...

Page 70: ...tronic Equipment Directive WEEE Directive in EU member states Indicates that the product conforms to regulations set out by the EU Directive Accuracy We define measurement tolerances in terms of f s f...

Page 71: ...measurement environment Doing so could result in a serious accident This instrument conforms to the safety requirements for CAT II 300 V measuring instruments CAT II When directly measuring the electr...

Page 72: ...8 Safety Notes T Outlet CAT II Internal Wiring Distribution Panel Service Entrance Service Drop CAT IV Power Meter CAT III Fixed Installation...

Page 73: ...ument under such conditions could result in an electric shock Replace the test leads and cables with those specified by our company WARNING Do not short circuit between two lines to be measured with t...

Page 74: ...o corrosive or combustible gases Exposed to a strong electromagnetic field or electrostatic charge Near induction heating systems such as high frequency induction heating systems and IH cooking equipm...

Page 75: ...od are sharp Be careful to avoid injury Precautions during measurement WARNING Use only the specified measurement cables or test leads Using a non specified cable may prevent safe measurement If the i...

Page 76: ...during shipment CAUTION During shipment of the instrument handle it carefully so that it is not damaged due to a vibration or shock To avoid damage to the instrument be sure to remove the accessories...

Page 77: ...esistance measurement ranges are extended to 115 of each of the measurement ranges This is useful especially for evaluation of resistances of approximately 10 and 100 that are important for earthing e...

Page 78: ...rcuit is protected and the improper connection is warned by sounding the buzzer 7 Semi dust proof construction The moving parts such as MEASURE button switches resistance dial etc are dust proofed sim...

Page 79: ...mes and Functions 1 3 Parts Names and Functions Front 1 2 3 4 5 6 7 8 9 11 10 14 13 12 15 p 25 Do not press the button of the instrument with a sharp object Doing so may damage the button 1 2 3 4 5 6...

Page 80: ...the operator to read the measured resistance value 6 Galvanometer Displays the value of current that flows through the galvanometer during earth resistance measurement 7 Battery effective range Allows...

Page 81: ...f instructions and the instrument s specifications Back 16 17 18 16 Battery cover screw Binding head screw M3 6 17 Battery cover Remove this cover for replacing the batteries 18 Serial number label Do...

Page 82: ...ying Case as shown in the figure below Measurement cable black Model FT3151 Winders Auxiliary earthing rod Instruction manual Store the winder in the carrying case with the knob folded Do not store co...

Page 83: ...del Z5022 Shoulder Strap 1 5 Attaching Model Z5022 Shoulder Strap The optional Z5022 Shoulder Strap is useful for taking the instrument out of the carrying case and for carrying the instrument 1 2 3 4...

Page 84: ...20 Attaching Model Z5022 Shoulder Strap...

Page 85: ...rument to the primary side of a breaker Doing so can cause a short circuit which allows large current to flow causing a serious accident Connect the test lead to the instrument first and then to the a...

Page 86: ...bles and test leads Connect measurement cords or test leads to the terminals securely If a terminal is loose the contact resistance will increase resulting in overheating equipment burnout or a fire W...

Page 87: ...ent for repair Is there any foreign material sand etc inside the measurement terminals Remove all foreign materials if any If it cannot be removed the instrument needs to be repaired Does the needle o...

Page 88: ...rt circuit their tips 3 Press MEASURE button to check that the measured value is approximately 0 If the measured value is not approximately 0 The measurement cables or test leads have not been fully i...

Page 89: ...foreign material remains inside It may cause failure There are two types of measurement method for earth resistance precision measurement method 3 pole method and simplified measurement method 2 pole...

Page 90: ...ate measurement cannot be carried out because it is significantly affected by noise In general measurement of large scale earthing electrode requires a large measurement current of approximately 20 A...

Page 91: ...t their base The tips of the auxiliary earthing rods are sharp Be careful to avoid injury To ensure safe operation use only the accessory cables The cables are hardened in freezing temperatures Do not...

Page 92: ...ation while pulling out the measurement cables 3 At the location where the measurement cable yellow has been fully pulled out insert the auxiliary earthing rod into the ground and connect the measurem...

Page 93: ...Set the Poles selector to 3 Setting the measurement frequency Select the measurement frequency between 575 Hz and 600 Hz by switching the Hz selector Usually set the frequency to 575 If the needle of...

Page 94: ...ASURE button is pressed no earth voltage can be measured Although the needle of the galvanometer may move or go off scale high this is not a defect If the earth voltage is 10 V or more measure the the...

Page 95: ...the auxiliary earth resistance If the needle remains in the vicinity of the zero point auxiliary earth resistance poses no problem 1 Checking earthing condition of auxiliary earthing rod H C Set the r...

Page 96: ...he Poles selector 2 will cause an incorrect measured value As shown in 3 3 Measuring Range and Tolerances p 48 each influence creates error The total value of intrinsic uncertainty and influence quant...

Page 97: ...the input a warning tone beep will sound In this case immediately disconnect the leads and check the outlet again This instrument can output a voltage of approximately 50 V Dry the instrument before...

Page 98: ...earth system called TT method If auxiliary earthing rods cannot be inserted the earth resistance is obtained with use of an existing low earthing resistor as an auxiliary electrode In this method the...

Page 99: ...surement object E and then connect terminal H C to the grounded side of a commercial power supply Measurement terminal Measuring cable Object to be connected E Black Measurement object E S P Not conne...

Page 100: ...g measurement set the frequency to 600 Switching the measurement frequency enables the instrument to be less affected by a harmonic earth voltage Battery check Set the range selector to the mark press...

Page 101: ...esistance check is not required When the range selector is set to H or S and the MEASURE button is pressed the needle of the galvanometer may move or go off scale high however this is not a defect The...

Page 102: ...he ground and pour a sufficient amount of water on it Take some time until the water penetrate the ground sufficiently 2 Connect the measurement cables as shown in the illustration using the clip to c...

Page 103: ...e earth net and pour water over it Before measurement allow some time for the water to well soak into the concrete As an alternative to the earth net a metal plate or aluminum foil may be used However...

Page 104: ...een band of the scale the auxiliary earth resistance is within 7 k If check results are unsatisfactory Drive the auxiliary earthing rods deeply into the ground and water the entire area with a suffici...

Page 105: ...he auxiliary earthing rods S P and H C at a sufficiently large distance from the earthing body E To determine the proper distance perform measurement at several points bringing the auxiliary earthing...

Page 106: ...xiliary earthing rod H C This will help to reduce measurement errors 5 m 5 m 29 S P H C E How to insert pull out the auxiliary earthing rods How to insert the auxiliary earthing rods The accessory aux...

Page 107: ...a hard metal bar etc other than the auxiliary earthing rod through the loop part of the auxiliary earthing rod and pull the auxiliary earthing rod while turning it Pulling the auxiliary earthing rod...

Page 108: ...oltage levels below 10 V For this reason if an earth voltage of more than about 5 V is detected another electrical equipment should be turned off or the equipment should be disconnected to eliminate t...

Page 109: ...1557 5 Operating temperature and humidity 0 C to 40 C 32 F to 104 F 80 RH or less no condensation Storage temperature and humidity 10 C to 50 C 14 F to 122 F 80 RH or less no condensation Dust proofne...

Page 110: ...stance 0 to 1150 Earth voltage 0 V to 30 V Output voltage AC without DC component overlapped less than or equal to 1 of AC RMS component Open circuit voltage Less than 50 V AC rms Measurement current...

Page 111: ...d terminals E and H C Operable number of times 1100 times Measurement condition 30 second measurement 30 second pause cycle 3 pole method 575Hz earth resistance of the auxiliary earthing rod is 100 me...

Page 112: ...ss Earth resistance Range selector 1 10 100 Measurement range 10 100 1000 Display range 0 to 11 5 0 to 115 0 to 1150 Fiducial value 10 100 1000 Tolerance intrinsic uncertainty A 0 25 2 5 f s 2 5 2 5 f...

Page 113: ...frequency of 400 Hz Tolerance 5 0 Effect of auxiliary earth resistance E5 Exceeding 0 to 100 RA but less than or equal to 5 k By S H check Tolerance 1 0 RA Total earth resistance value between main gr...

Page 114: ...50 Measuring Range and Tolerances Earth voltage Range selector V Measurement range 30 V Measuring range 0 V to 30 V Tolerance 3 0 f s Effect of temperature Tolerance 1 0 0 C to 40 C...

Page 115: ...o ensure that the instrument provides correct measurement results of the specified accuracy Calibrations The calibration period varies depending on the status of the instrument or installation environ...

Page 116: ...es To prevent instrument damage or an electric shock use only the screws for securing the battery cover in place that shipped with the product If you have lost any screws or find that any screws are d...

Page 117: ...ifferent types of batteries Be careful to observe the battery polarity during installation Do not use batteries after their recommended expiry date Do not leave depleted batteries inside the instrumen...

Page 118: ...move the cover of the battery compartment sliding it in direction A as shown in the illustration 4 Replace all of the six batteries with fresh ones 5 Reattach the cover of the battery compartment slid...

Page 119: ...is suspected check 4 5 Before Returning for Repair p 56 before contacting your authorized Hioki distributor or reseller When transporting the instrument be sure to observe the following precautions T...

Page 120: ...asurement range Check the earthing condition of the earth electrode The needle of the galvanometer goes off scale to the left The measurement leads may be broken or the ground line may not be connecte...

Page 121: ...by a power company The result measured with the 2 pole measurement method is larger than the expected resistance value As for the 2 pole measurement method of the FT3151 the accuracy of the 1 range is...

Page 122: ...58 Before Returning for Repair...

Page 123: ...ctromotive force occurs in the opposite direction to the current interfering with correct measurement Thus a rectangular wave or a sine wave with a frequency of between several tens heltzes and 1 kHz...

Page 124: ...t that has been connected to the earthing electrode superimposes over the signal to be detected by the earth tester affecting measured values In addition if the earth resistance of the auxiliary earth...

Page 125: ...s E and S P is given by Ex the resistance between the measurement terminal E and the slider S of the variable resistor by Rs and the voltage drop at the variable resistor by Es if the galvanometer is...

Page 126: ...he 3 pole method applies Rx Ro Rs n Thus the earth resistance can be found by adding the earth resistance of the existing earthing body Ro to the earth resistance of the measurement object Rx In addit...

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