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Related Manuals for Megger S1-554/2
Summary of Contents for Megger S1-554/2
- Page 1 S1-554/2 5kV Digital Insulation Tester USER MANUAL...
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Page 2: Safety Warnings
SAFETY WARNINGS Safety Warning must be observed during use. The circuit under test must be switched off, de-energised, isolated and checked to be safe before insulation test connections are made. Make sure the circuit is not re-energised whilst the instrument is connected. Circuit connections must not be touched during an insulation test. -
Page 3: Table Of Contents
CONTENTS Safety warnings Insulation resistance ‘IR’ test Introduction Firmware filtering General description Breakdown mode / burn mode Features Alarm limit mode Cleaning Step voltage ‘SV’ test Power lead and battery charging Polarisation index ‘PI’ test, and dielectric absorption Instrument controls and indicators ratio ‘DAR’... -
Page 4: Introduction
The dielectric absorption ratio is automatically calculated if the The S1-554/2 can be powered from the mains supply or by its own internal corresponding timers are set. rechargeable battery, which provides for at least 6 hours of continuous Ω... -
Page 5: Cleaning
POWER LEAD AND BATTERY CHARGING Cleaning If the power lead supplied is not suitable for your mains connection, do not use an adaptor. Always use a power lead fitted with the correct plug. Disconnect the instrument and wipe it with a clean cloth slightly damped The instrument is fitted with a two-pin IEC60320 power inlet. -
Page 6: Instrument Controls And Indicators
INSTRUMENT CONTROLS AND INDICATORS Line RS232 Measurement terminals Voltage at Test modes Burn indicator Alarm Data recording input guard terminals Time L and Battery level M selectors Timers Main, T1, Voltage L M selectors Line input Present Breakdown Analogue S1-554 indicator indicator display... -
Page 7: Power On/Off Button Test Voltage L And M Buttons
Power On/Off button test voltage is changed during a test, the new test voltage will be displayed briefly. The instrument will only turn on if this button is pressed, held and then When the test has stopped, the display continues to show the voltage present on the test leads. - Page 8 of the test. The digital display toggles between insulation resistance and current. In the ‘IR’, ‘PI’, and ‘DD’ modes the secondary display initially shows the PI (polarity index), DAR (dielectric absorption ratio), and, on completion of the test, the TC (time constant) and capacitance measurements. Further Ω...
- Page 9 Ω Ω Press Press Ω Ω Press Press Ω Press Ω Press Ω Press Ω Press Figure 3 - The result of a dielectric discharge test (DD) Test settings: T1 and T2 times set in order to measure the DAR Figure 2 - The result of a polarity index test (PI) Test settings: T1 and T2 times set in order to measure the DAR Test condition: test runs for longer than 10 minutes as this is required for...
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Page 10: B Button
test voltage buttons. ‘TL and ‘TM represent the timer buttons. Button Press Function Comment Fn + VL Increment in 10 V steps Voltage range between 50 and 1000 V Fn + VM Decrement in 10 V steps Voltage range between 50 and 1000 V Ω... -
Page 11: Record Button
The instrument now discharge. Megger Limited cannot accept responsibility for any losses of displays ‘clr’ to indicate clear mode. Press and hold down test button until data. -
Page 12: Recording To A Pc
Press the MODE button to exit without deleting the results. Guard terminal For basic insulation tests and where there is little possibility of surface Recording to a PC leakage affecting the measurement, it is unnecessary to use the guard While carrying out a test, the instrument will output the test voltage, test terminal i.e. -
Page 13: Rs232 / Usb Connections
Installation instructions are also to be found on the CD. If there is an external voltage greater than 80 V present, this will be Programmes such as Megger Download Manager may be used to displayed regardless of changes made to the test voltage. In this case the ®... -
Page 14: Analogue Display
shows the last measurement made until the timer or voltage test settings ‘Pre-Test / During test’ Key action table. are changed, or the test start/stop button is pressed. Button press Key action Fn + Key action Analogue display Pre-test During test Pre-test During test This simulates an analogue meter movement to give the user a better... -
Page 15: Test Mode Summary
TEST MODE SUMMARY completion, insulation capacitance and the time constant associated with it Press the ‘MODE’ button to cycle through and select the test mode. is calculated and displayed. Modes of test to be chosen from include an insulation resistance ‘IR’ test, a polarization index ‘PI’... -
Page 16: Breakdown Mode / Burn Mode
Ω Press and hold the Fn button while repeatedly pressing the /I button to To toggle the alarm limit mode on/off, hold down the function button, then press and release the mode button repeatedly until the ‘A ↑’ symbol scroll through the filter options. is flashing on the display. -
Page 17: Measurements Above 100 G
Polarisation Index (PI) = R The main timer will default to 30 minutes, which is normally sufficient 10 min time for full absorption to take place in an insulation material. The default 1 min test voltage is set to 500 V . The ‘DD’ test requires the instrument to measure the discharge current 1 minute after the removal of the test The ‘Dielectric Absorption Ratio’... -
Page 18: Circuit Block Diagram
- Test V Alternatively, screened leads are available as an optional accessory from Megger. The lead to the negative terminal is fully screened. The screen is plugged into the Guard terminal, diverting any stray leakage currents. This considerably improves measurements made with a floating output, where Ground the leads might touch each other or anything other than the test piece. -
Page 19: Specifications
The PI, DAR, capacitance, time constant 10 nF to 50 µF (dependent on test voltage) and DD values are also stored if available at the end of the test. Megger Capacitance measurement accuracy (23°C) Download Manager may be used to transfer this data to a PC. -
Page 20: Accessories
ACCESSORIES Order Code Data output Real time serial data output once per second of the test voltage, test Included Accessories current, and resistance 3 m lead set, medium size insulated clips 6220-820 Lead set User guide on CD-ROM 2000-213 Three flexible silicon insulated leads with compact clamp RS232 cable 25955-025 Safety... -
Page 21: Repair And Warranty
Megger operate fully traceable calibration and repair facilities, ensuring your instrument continues to provide the high standard of performance 5. You may track the progress of your return on line at www.megger.com and workmanship you expect. These facilities are complemented by a... - Page 22 F +41 62 768 20 33 F +91 22 26740465 Megger products are distributed in 146 countries worldwide. This instrument is manufactured in the United Kingdom. The company reserves the right to change the specification or design without prior notice.
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