Universal Clamp Meter

Transcription

1 Universal Clamp Meter Instruction Manual 489D F D UniversalClampMeter Instr.indd 1 5/11/ :37:49 AM

2 Table of Contents 1. Features Specifications Designations How to Make Measurements Line Current Measurements...6,7 4.2 Leakage Current Measurements Tips Typical Causes Voltage Measurements Resistant Measurements Battery Replacement Warranty Statement F D UniversalClampMeter Instr.indd 2 5/11/ :37:49 AM

3 1. Features The 489D is a fully featured clamp meter that includes high sensitivity current, voltage and resistance measurements for RCD circuit analysis. LCD Screen LCD indication of all measurements and functions. Safety Designed Especially designed for safety throughout. No exposed metal on the external case. Double insulated to Australian and International Standards. Functional Design The 489D is so compact you can take it anywhere, yet is completely user friendly with a large rotary range switch that enables easy single-handed operation. A peak hold facility and swivel strap are also included for added convenience. Low Power Consumption Through the use of low energy circuits a single 9V battery will continuously power the instrument for approximately 200 hours. Battery Check Battery symbol is displayed on screen when battery needs replacing. 3 F D UniversalClampMeter Instr.indd 3 5/11/ :37:49 AM

4 2. Specifications Catalogue No. 489D a.c. Current Range Resolution Overload Protection 40mA 0.01mA 1A 400mA 0.1mA 10A 4A 1mA 100A 100A 0.1A 500A Accuracy Refer Page 9 40Hz - 1kHz Note: The 40mA range is very sensitive and may not give a zero reading with no current flowing in the circuit. This is normal. a.c. Voltage Range Range Resolution Overload Protection 600V 1V 1000V d.c. 750V a.c. Accuracy 50Hz - 500Hz +/- 1.5% plus 5 digits Input Impedance 10 Meg Ohm Resistance Range Range Resolution Overload Protection 400 Ohm 0.1 Ohm 500V a.c. or d.c. Accuracy +/- 1.2% plus 3 digits Maximum Open Voltage 3.3V Audible Indication Buzzer sounds if resistance is less than 100 Ohms Display 3 x 20mm digit LCD display with decimal point, measurement units, overload, low battery and peak hold on indicators. Sampling Time 2.5 times per second Operating Temperature -10 C to 50 C (less than 80% humidity) Battery Life Approximately 200 hours Dimensions 221mm x 62mm x 35mm Weight 342g Accessories Carry case, test lead set and appliance test adaptor 4 F D UniversalClampMeter Instr.indd 4 5/11/ :37:49 AM

5 3. Designations 489D Universal Clamp Meter 1. Inductive Clamp Jaw 2. Jaw Trigger 3. Peak Hold Switch 4. Frequency Select Switch 5. Rotary Range Switch 6. ON-OFF Switch 7. LCD Display 8. V/Ohm Test Socket 9. Wrist Strap Fig. 1 5 F D UniversalClampMeter Instr.indd 5 5/11/ :37:51 AM

6 4. How to Make Measurements a.c. Current Measurements Note: Before measuring current, make sure that the voltage test leads are removed from the instrument. 1. Release the peak hold and turn meter on by depressing power button. 2. Turn the range switch knob to the relevant amp. scale. 3. Press the trigger on the right side of the instrument to open the transformer jaws and encircle conductors with the transformer jaws (see example Fig. 2, A, B, C). 4. Switch meter off upon completing measurement by releasing power button. 4.1 Line Current Measurement Examples A Fig. 2 6 F D UniversalClampMeter Instr.indd 6 5/11/ :37:52 AM

7 a. Single Phase A N b. Three Phases (no neutral) c. Three Phases (plus neutral) 7 F D UniversalClampMeter Instr.indd 7 5/11/ :37:52 AM

8 4.2 Leakage Current Measurements 1. Follow steps 4(1) and (2) on page 6 and Turn range switch knob to the 40mA scale. 3. Open the transformer jaws and clamp all active and neutral conductors of the circuit under test (Fig. 2A). (For the purpose of RCD installations, leakage values greater than 5mA should be traced to their source and eliminated.) 4. To test an appliance equipped with a flexible power lead and plug, plug the appliance into the available socket via the appliance test adaptor provided with this instrument. (Fig. 3) 5. Turn the power and the appliance on, then clamp the jaws around the active and neutral loop wires on the appliance test adaptor (see Fig 3A). 6. Switch power off upon completing measurement. Appliance Test Adaptor Fig. 3 8 Fig. 3A 5. Tips for Fault Finding and Testing in RCD Installations 1. Lint collecting in the terminal enclosure of irons. 2. Accumulation of crumbs and other food particles in toasters and mini ovens. 3. Moisture accumulating in heating elements in appliances such as cookers, ovens, hot water services, urns, etc. F D UniversalClampMeter Instr.indd 8 5/11/ :37:52 AM

9 6. Typical Causes of Leakage Current in Fixed Wiring 1. Additional M.E.N. points downstream of the RCD. 2. Incorrect wiring of socket outlets or light points (eg. neutral and earth exchanged). 3. Use of neutral or active from non RCD protected circuits to power loads in an RCD protected circuit. a.c. Current Range Resolution Accuracy 40Hz - 1kHZ Overload Protection *40mA 0.01mA +/-1.5%+2 1A 400A 0.1mA +/-5.0% 10A 4A 1mA +/-1.5%+2 100A 100A 0.1A +/-2%+2 500A *40mA range is very sensitive and may not give zero reading with no current flowing in CT. This is normal. 7. Voltage Measurements 1. Release the peak hold and turn meter on by depressing power button. 2. Plug the red test lead into the VOLT terminal and the black test lead into the COM terminal. 3. Turn the range switch knob to the 600V scale. 4. Bring one of the test leads in contact with one side of the circuit under test and the other with the other side. 5. Switch meter off upon completing measurement by releasing power button. a.c. Voltage Range Resolution Accuracy 50Hz - 500Hz Overload Protection 600V 1V +/-1.5%+5 d.c.1000v a.c. 750V Input Impedance 10Meg Ohm 9 F D UniversalClampMeter Instr.indd 9 5/11/ :37:52 AM

10 8. Resistance Measurements 1. Release the peak hold and turn meter on by depressing power button. 2. Turn the range switch knob to the Ohm scale. 3. Insert black banana plug of the voltage test leads into the COM terminal. Then, insert the red banana plug into the red terminal. 4. As shown in Fig. 4 connect the test leads to the circuit under test for resistance measurements. 5. Switch meter off upon completing measurement by releasing power button. Resistance Range Resolution Accuracy Hz Overload Protection 400 Ohm 0.1 Ohm +/- 1.2%+3 a.c./d.c. 500Vrms Buzzer sounds if resistance is less than 100 Ohm. Max. Open Voltage 3.3V 9. Battery Replacement Remove battery cover, (Phillips Head screw) and slide off. Replace with battery or equivalent as per Fig F D UniversalClampMeter Instr.indd 10 5/11/ :37:54 AM

11 10. Warranty Statement The benefits conferred by this warranty are in addition to all implied warranties, other rights and remedies in respect of the product which the consumer has under the Trade Practices Act and similar State and Territory Laws. The original purchaser of this Universal Clamp Meter, is provided with the following warranty, subject to the following conditions: Clipsal Australia warrant this product for a period of 1 year from the date of purchase for all parts defective in workmanship or materials. All defective parts will be replaced or repaired free of charge. The following exclusions do not preclude the purchaser from those statutory rights consumers have under the Trade Practices Act or similar State and Territory Laws. Warranty Conditions 1. The instrument must be used by a competent, trained person and operated in strict accordance with the instructions. Clipsal Australia Pty Ltd will not accept liability for any damage or injury caused by misuse or non-compliance with the instructions. 2. Warrant will only be given where proof of purchase date is provided. e.g. original invoice or copy. 3. This instrument must not be modified or changed in any way. IMPORTANT: Please retain this warranty. You must retain your original purchase receipt, otherwise you will be charged at current rates. Purchased from: Company Name Address Date of Purchase 11 F D UniversalClampMeter Instr.indd 11 5/11/ :37:54 AM

12 Technical Support and Troubleshooting For technical assistance call: Worldwide contacts: Information and resources: (Australia) (New Zealand) clipsal.com/locations clipsal.com/cis Product of Clipsal Australia Pty Ltd ABN Park Terrace, Bowden, South Australia 5007 Telephone (08) Facsimile (08) National Customer Service Enquiries: Tel Fax clipsal.com Clipsal Australia Pty Ltd reserves the right to change specifications, modify designs and discontinue items without incurring obligation and whilst every effort is made to ensure that descriptions, specifications and other information in this catalogue are correct, no warranty is given in respect thereof and the company shall not be liable for any error therein. Copyright Clipsal Australia Pty Ltd All rights reserved. F1365/04 CLIPCOM/ F D UniversalClampMeter Instr.indd 12 5/11/ :37:55 AM