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Summary of Contents for Fluke 1537-II
- Page 1 1535/1537/1537-II Insulation Tester Users Manual April 2017 Rev. 3, 9/23 (English) © 2017-2023 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. All Product names are trademarks of their respective companies.
- Page 2 LIMITED WARRANTY AND LIMITATION OF LIABILITY The Fluke 1537 will be free from defects in material and workmanship for 3 years from the date of purchase. The Fluke 1535 will be free from defects in material and workmanship for 1 year from the date of purchase.
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Page 3: Table Of Contents
Store Test Results (1537/1537-II only) ..........19 View Test Results Stored in Memory (1537/1537-II only) ..... 19 Delete Test Results Stored in Memory (1537/1537-II only) ....21 V ac / V dc / Resistance (1537/1537-II only) ..........22 1537/1537-II PC Software ................24 Maintenance....................25 Cleaning ....................25... -
Page 4: Introduction
Introduction The Fluke 1535/1537/1537-II Insulation Testers (the Tester or Product) are high- voltage insulation testers to validate general circuits, such as switchgear, motors, and cables. The Tester features: • Large liquid crystal display (LCD) • Preset test voltages: 250 V, 500 V, 1000 V, 2500 V •... -
Page 5: Contact Fluke
1535/1537/1537-II Users Manual Contact Fluke Fluke Corporation operates worldwide. For local contact information, go to our website: www.fluke.com. To register your product, or to view, print, or download the latest manual or manual supplement, go to our website. To contact Fluke, call Technical Support China at +86-400-810-3435. -
Page 6: The Tester
Insulation Tester The Tester The Tester Table 1 shows the location of the Tester features. Table 1. Features 30V MAX Item Description USB Port (1537/1537-II only) Input Terminals Pushbuttons... - Page 7 1535/1537/1537-II Users Manual Pushbuttons Table 2 shows the location of each pushbutton and describes the functions. Table 2. Pushbuttons Model Item Description 1537/ 1535 1537-II Power On / Power Off ● ● DAR / PI / DAR + PI Selection ●...
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Page 8: Tester On/Off
• Change test parameters • Start an insulation test • View stored test results (1537/1537-II only) • Download test results (1537/1537-II only) W Caution If the object under test is highly capacitive, it can take a long time for the Product to discharge. Do not turn off the Product or remove test leads until the discharge is complete. -
Page 9: Display
Table 3. Display Features Item Description Ramp mode Dielectric Discharge Polarization Index Dielectric Absorption Ratio Electrical breakdown in Ramp mode Interference present; readings could be out of specified accuracy range Continuity (1537/1537-II only) Test Voltage Setting Insulation test voltage Discharging... -
Page 10: Guard Terminal Use
Insulation Tester The Tester Table 3. Display Features (cont.) Item Description Possible hazardous voltage is at the test terminals (L to E and V to COM) Battery Status Delete/Delete All Save Bar graph display of insulation resistance V ac or V dc voltage indicator Insulation and resistance measurement indicator Text display;... - Page 11 1535/1537/1537-II Users Manual Figure 1 shows how to measure the resistance from one of the conductors to the outer shield. In this case, there is a leakage current along the surface of the inner insulation near the end of the cable. This leakage adds to the current that the negative terminal senses, and causes the Tester to read a lower resistance than it should.
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Page 12: Insulation Test Settings
The actual test voltage can be up to 10 % higher than the selected test voltage. Program a Test Voltage (1537/1537-II only) To set a test voltage in between the preset test voltages, proceed as follows: 1. Turn on the Tester. -
Page 13: Select A Ramp Or Steady-State Test (1537/1537-Ii Only)
The test voltage can be up to 10 % higher than the test voltage you select. Select a Ramp or Steady-State Test (1537/1537-II only) The ramp test function is an automated test that checks insulation for a breakdown. During a ramp test, the output voltage starts at 0 V and increases linearly (100 V/s) until it reaches the specified test voltage or until the Tester senses a sudden drop in measured resistance. -
Page 14: Polarization Index (Pi)
Insulation Tester Insulation Test Settings Polarization Index (PI) As part of the insulation test, the Tester measures and stores polarization index (PI), when appropriate. A polarization index test requires 10 minutes to complete. Therefore, the Tester will start a countdown at 10 minutes. When an insulation test reaches 10 minutes, the polarization test is complete. -
Page 15: Dielectric Discharge (1537/1537-Ii Only)
1535/1537/1537-II Users Manual Dielectric Discharge (1537/1537-II only) The dielectric discharge (DD) test, also known as the re-absorption current test, is a measurement of the current during dielectric discharge of the equipment being tested. The measurement principle is as follows: 1. Equipment to be tested is first charged for 30 minutes to reach a stable state (capacitance charging and polarization are completed and the only current flowing is the leakage current). -
Page 16: Dielectric Absorption Ratio
Insulation Tester Insulation Test Settings Dielectric Absorption Ratio If appropriate, as part of the insulation test, the Tester stores the dielectric absorption ratio (DAR) with the measurement. A DAR test has a 1-minute duration and is measured and stored as invalid data for all insulation tests <1 minute. The DAR test automatically stops when the insulation test time reaches 1 minute. -
Page 17: Test Circuit Connections
1535/1537/1537-II Users Manual Test Circuit Connections XW Warning To prevent possible electric shock or personal injury: • Disconnect power and discharge all high-voltage capacitors before you measure resistance. • Connect the Earth (E) test lead before the live (L) test lead and remove the L test lead before the E test lead. -
Page 18: Before An Insulation Test
The Tester includes features that let you adapt the test to your requirements. You can: • Define a test voltage • Measure polarization index (PI) • Measure dielectric absorption ratio (DAR) 1537/1537-II only: • Make a ramp test selection • Measure dielectric discharge (DD) • Compare insulation resistance •... -
Page 19: Insulation Test
1. With the Tester turned on, set the available measurement options to meet your test requirements. These include: • Test Voltage – Set range: 250 V to 2500 V (1537/1537-II only: 100 V steps) • Ramp Test – (optional, 1537/1537-II only) •... - Page 20 Insulation Tester Insulation Test XW Warning To prevent possible electric shock or personal injury: • Before and after tests, do a voltage test to confirm that the Tester does not detect the presence of hazardous voltage. See Table • If the Tester beeps continuously before the insulation test starts and there is hazardous voltage, disconnect test leads and remove power from the circuit under test.
- Page 21 • Time limit is complete (1537/1537-II only) • Interference on the test circuit • Breakdown occurs with ramp test enabled (1537/1537-II only) • DAR / PI / DD reaches time limit • Battery is depleted When the insulation test is done, the Tester beeps if a potentially hazardous voltage remains on the test terminals due to charged-circuit capacitance or from the presence of an external voltage.
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Page 22: Store Test Results (1537/1537-Ii Only)
(0-9, A-Z, a-z). c. Push to store the results. View Test Results Stored in Memory (1537/1537-II only) Note Parameters not appropriate for a test are shown as NA or UNSPEC. The Tester can store 99 sets of test data, including: •... - Page 23 1535/1537/1537-II Users Manual To view stored test data: 1. With the Tester turned on, push to view stored records. 2. Push to select Record. 3. Push to view the record detail. Note When a voltage is present at the terminals, that voltage is always shown on the top-center of the display, regardless of whether that voltage is sourced by the Tester or is from the circuit under test.
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Page 24: Delete Test Results Stored In Memory (1537/1537-Ii Only)
Insulation Tester Insulation Test Delete Test Results Stored in Memory (1537/1537-II only) You can delete a selected test result or delete all stored test results. To delete a selected test result: 1. Push to view stored records. 2. Push to select Record. -
Page 25: Ac / V Dc / Resistance (1537/1537-Ii Only)
1535/1537/1537-II Users Manual V ac / V dc / Resistance (1537/1537-II only) The 1537/1537-II includes V ac / V dc and resistance measurement functions. To do a V ac / V dc or resistance test, see Figure 1. Turn on the Tester. - Page 26 Insulation Tester V ac / V dc / Resistance (1537/1537-II only) Figure 9. V ac / V dc / Resistance 1x = V ac 2x = V dc Ω 3x = K 30V MAX Ω V ac V dc...
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Page 27: 1537/1537-Ii Pc Software
Verify that the download is successful before deleting the stored test results on the Tester. • You can use the Fluke 1537/1537-II PC Software to clear results data stored in the Tester from the PC. Figure 10. USB Connection »... -
Page 28: Maintenance
Insulation Tester Maintenance Maintenance There are no user-replaceable parts inside the Tester. XW Warning To prevent possible electrical shock or personal injury: • Do not repair or service the Product beyond what is described in this manual. • Have an approved technician repair the Product. Cleaning Periodically wipe the case with a damp cloth and mild detergent. -
Page 29: Product Disposal
1535/1537/1537-II Users Manual Figure 11. Battery Replacement 8 AA Product Disposal Dispose of the Product in a professional and environmentally sound manner: • Delete personal data on the Product before disposal. • Remove batteries that are not integrated into the electrical system before disposal and dispose of batteries separately. - Page 30 Test Probe, Banana Jack, 4 mm Tip, Red 2099044 Test Probe, Banana Jack, 4 mm Tip, Black 2427138 Alligator Clip – Red 2041727 Alligator Clip – Black 2041730 Alligator Clip – Green 2068133 Soft Carrying Case 4862393 USB Cable (1537/1537-II only) 4499448...
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Page 31: General Specifications
1535/1537/1537-II Users Manual Table 9. Accessories Accessory Part No. 10 kV Clamp (Red/Black/Green) 4103525 Table 10. Number of Insulation Resistance Measurements Number of Un (V) (Ω) Measurements load 250 V 250 kΩ 6500 500 V 500 kΩ 3800 1000 V 1 MΩ... - Page 32 Insulation Tester Electrical Specifications Table 11. Insulation Resistance Measurement (cont.) Test Voltage Range Resolution Accuracy <200 kΩ unspecified unspecified 200 kΩ to 500 kΩ 1 kΩ 0.50 MΩ to 5.00 MΩ 0.01 MΩ 5.0 MΩ to 50.0 MΩ 0.1 MΩ 50 MΩ...
- Page 33 1535/1537/1537-II Users Manual Table 11. Insulation Resistance Measurement (cont.) Test Voltage Range Resolution Accuracy <200 kΩ unspecified unspecified 200 kΩ to 500 kΩ 1 kΩ 0.50 MΩ to 5.00 MΩ 0.01 MΩ 5.0 MΩ to 50.0 MΩ 0.1 MΩ 2500 V 50 MΩ...
- Page 34 Insulation Tester Electrical Specifications Table 12. V ac / V dc / Resistance Measurement (1537/1537-II Only) Accuracy Function Range Resolution ±(% reading + Digits) ±(2 % +10) V ac 0 V to 600.0 V 0.1 V (45 Hz to 500 Hz) V dc 0 V to 600.0 V...
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Page 35: Principle Of Measurement And Resistance
1535/1537/1537-II Users Manual Principle of Measurement and Resistance The Tester uses these formulas to measure insulation parameters and display the results: Ohm’s Law Capacitance (Charge) PI = (Polarization Index) [CN] (Dielectric Absorption Ratio) × I = current after 1-minute discharge...