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Related Manuals for PEWA Robin-Amprobe KMP7030
Summary of Contents for PEWA Robin-Amprobe KMP7030
- Page 1 KMP7030 Loop Impedance Tester Users Manual...
- Page 3 KMP7030 Loop Impedance Tester Users Manual June 2011, Rev.1 ©2011 Amprobe Test Tools. All rights reserved. Printed in China...
- Page 4 Limited Warranty and Limitation of Liability Your Amprobe product will be free from defects in material and workmanship for 1 year from the date of purchase, unless local laws require otherwise. This warranty does not cover fuses, disposable batteries or damage from accident, neglect, misuse, alteration, contamination, or abnormal conditions of operation or handling.
- Page 5 KMP7030 Loop Impedance Tester Rotary Switch: Select Non Trip test on passive RCDs measurement function and range Automatic measurement reading Loop impedance measurement lock (except for measurement range LOOP-2000Ω) Short-circuit current measurement TEST Button: Starts the selected test ON / OFF Button Display Display Backlight Button Measuring terminal...
- Page 6 Display Over-temperature. Wait while the tester cools down Measurement reading lock Noise appears between neutral to earth Line to earth voltage Fault voltage. Protect earth voltage higher than 50V Battery status indicator Measuring Calibration mode Hazardous voltage Non Trip test on passive RCDs Voltage Loop impedance Prospective short-circuit current...
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Page 7: Table Of Contents
KMP7030 Loop Impedance Tester CONTENTS SYMBOL .........................2 SAFETY INFORMATION ..................2 UNPACKING AND INSPECTION ................3 PRODUCT DESCRIPTION ..................3 FEATURES .......................4 MAKING MEASUREMENT ..................5 Measuring Volts and Frequency ...............5 Measuring Loop Impedance ................6 Measuring loop impedance NO TRIP mode ............6 Measuring for Line Resistance and Prospective Short-circuit Current ...7 Fault Loop Impedance and Fault Prospective Short-Circuit Current ....8 SPECIFICATION .......................13 MAINTENANCE AND REPAIR ................14... -
Page 8: Symbol
SYMBOLS Caution ! Risk of electric shock Battery Caution ! Refer to the � Earth Ground explanation in this Manual � Ω Loop Impedance Complies with EU directives CAT III Testers are designed to Do not dispose of this protect against transients in product as unsorted CAT III fixed equipment installations... -
Page 9: Unpacking And Inspection
• Do not operate the product around explosive gas, vapor, or dust. • Use only 1.5 V AA batteries, properly installed in the product case, to power the product. • Use the proper function and range for all measurements. • Measure a known voltage and loop impedance first to make sure that the product operates correctly. -
Page 10: Features
FEATURES • Non Trip Loop test on passive RCDs • Instant reading • 20, 200 & 2000Ω Loop measurement ranges • PSC measurement up to 20kA • Displays mains voltage before test • Instant correct wiring status check • Backlight display •... -
Page 11: Making Measurement
MAKING MEASUREMENTS When low battery voltage mark “ ” shows on LCD screen, � replace the batteries before measurement. Low Battery Voltage Display Symbol Voltage of Battery When 9.2V or lower Measuring Volts and Frequency Figure 1: Voltage Measurement Figure of Loop Impedance/Line Impedance/ Power Supply Socket-Outlet. -
Page 12: Measuring Loop Impedance
• • socket-outlet and displays symbols of “P-E ” and “P-N ” to indicate the wiring connections. The Tester displays the symbol of “LO V” when the voltage is lower than 100Vac . Make sure the grounding of the socket-outlet is connected to Earth. The •... -
Page 13: Measuring For Line Resistance And Prospective Short-Circuit Current
4. Press TEST button (the measurement would take few seconds to 60 seconds) 5. The display shows the measured loop impedance Measuring for Line Resistance and Prospective Short-circuit Current The line resistance is the resistance measured between the phase line L and the neutral line N in single-phase power system. -
Page 14: Fault Loop Impedance And Fault Prospective Short-Circuit Current
Figure 2 WARNING! � • The Tester can only connect the mains AC230V+10%/-15% phase to ground or OLD-TT system’s neutral line. • Disconnect between the Tester and the circuit when overheating symbol “HOT” shows on the display. Wait while the tester cools down Fault Loop Impedance and Fault Prospective Short-Circuit Current In case there is overflow protective device or fuse in the electrical circuit, its fault impedance shall be measured. - Page 15 Figure 3: TT System Circuits in TT system shall meet the following conditions in accordance to the international standard IEC 60364: RA≤50/Ia Here: • RA is the sum of the ground connecting resistance R and the conductor resistance. • 50 is the maximum contact voltage. •...
- Page 16 Figure 4 This example’s maximum value is 1667Ω and Tester’s reading is 12.50Ω conforming to RA≤50/Ia. RCD test shall also be carried out in order to determine that using RCD protective device effective and meet the safety requirements. TN system’s fault impedance consists of the following parts: •...
- Page 17 Figure 5: TN System Circuits in TN system shall meet the following conditions in accordance to the international standard IEC 60364: Zs≤Uo/Ia Where: Zs is fault circuit resistance. Uo is the rated voltage between phase and grounding. la is the current that can enable the protective device to act within the time in the following table.
- Page 18 For instance, in TN system, rated power Uo=230V, the protective device, la value and maximum Zs value may be as follows: 5s of Tripping Time 0.4s of Tripping Time Rated(A) Ia (A) Zs (Ω) Ia (A) Zs (Ω) 1.56 1.25 1.53 0.83 1.21...
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Page 19: Specification
SPECIFICATION Ambient Temperature: 23±5°C Ambient Humidity: 45 - 75%RH Error Limit: ±(% Reading + dgt Count) Loop Impedance: Rated Test Current Range Display Range Accuracy and Time 20Ω 0.00 - 19.99Ω 25A/10ms 200Ω 0.0 - 199.9Ω 2.3A/20ms ±(3%rdg+4LSD) 2000Ω 0 - 1999Ω 15mA/360ms 20Ω... -
Page 20: Maintenance And Repair
Voltage Measurement: AC Voltage Measuring Range 100 - 300V(50/60Hz) Resolution Accuracy ±(2%+4LSD) Display: maximum reading is 9999. Low Battery warning indication: “ ” Over-range indication: “OL” Operating Condition: 0°C - 40°C, <85% Relative Humidity Storage Condition: -20°C - 60°C, <90% Relative Humidity Dimension (L x W x D): 189 ×... -
Page 21: Battery Replacement
Battery Replacement Replace the batteries immediately after the low battery indicator appears on the screen. Follow the steps below to replace the batteries: 1. Disconnect the power cord from mains socket-outlet. 2. Turn the OFF the Tester 3. Remove the screws from the battery cover and open the battery cover 4.
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