Fluke 434-II/435-II/437-II Three Phase Energy and Power Quality Analyzer Service Manual PN 4822 872 05408 Febr. 2013 © 2013 Fluke Corporation, All rights reserved. All product names are trademarks of their respective companies.
Table of Contents Chapter Title Page Safety Instructions .......................................................................................... 1-1 1.1 Introduction..................................................................................................1-3 1.2 Safety Precautions........................................................................................1-3 1.3 Caution and Warning Statements ................................................................1-3 1.4 Symbols ..........
Fluke 434-II/435-II/437-II Service Manual Calibration Adjustment................................................................................... 5-1 5.1 General.........................................................................................................5-3 5.1.1 Introduction ..........................................................................................5-3 5.1.2 Calibration number and date ................................................................5-3 5.1.
Chapter 1 Safety Instructions Title Page 1.1 Introduction..................................................................................................1-3 1.2 Safety Precautions........................................................................................1-3 1.3 Caution and Warning Statements ................................................................1-3 1.4 Symbols .......................................................................................................1-3 1.
Safety Instructions 1.1 Introduction 1 1.1 Introduction Read these pages carefully before beginning to install and use the Analyzer. The following paragraphs contain information, cautions and warnings which must be followed to ensure safe operation and to keep the Analyzer in a safe condition. Warning Servicing described in this manual is to be done only by qualified service personnel. To avoid electrical shock, do not service the Analyzer unless you are qualified to do so. 1.
Fluke 434-II/435-II/437-II Service Manual Battery Safety Approval Conforms to relevant Australian standards Safety Approval Safety Approval RoHS China Current Clamp 1.5 Impaired Safety Whenever it is likely that safety has been impaired, the Analyzer must be turned off and disconnected from line power. The matter should then be referred to qualified technicians. Safety is likely to be impaired if, for example, the Analyzer fails to perform the intended measurements or shows visible damage. 1.
Chapter 2 Characteristics Title Page 2.1 Introduction..................................................................................................
Characteristics 2.1 Introduction 2 2.1 Introduction Performance Characteristics For the specifications refer to the “Characteristics” Chapter 27 in the Fluke 434-II/435II/437-II Users Manual. The Users Manual can be downloaded from Fluke’s website. Specifications are based on a one year calibration cycle.
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Chapter 3 List of Replaceable Parts Title Page 3.1 Introduction..................................................................................................3-3 3.2 How to Obtain Parts.....................................................................................3-3 3.3 Service Centers ............................................................................................3-3 3.4 Final Assembly Parts ...................................................................................3-4 3.
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List of Replaceable Parts 3.1 Introduction 3 3.1 Introduction This chapter contains an illustrated list of replaceable parts for the models 434-II, 435-II, and 437-II Power Quality Analyzer Series II. Parts are listed by assembly; alphabetized by item number or reference designator. Each assembly is accompanied by an illustration showing the location of each part and its item number or reference designator.
Fluke 434-II/435-II/437-II Service Manual 3.4 Final Assembly Parts See Table below. In Chapter 6 – Disassembling the Analyzer, pictures are present giving an impression on how the instrument is constructed. Dedicated pictues with item numbers are scheduled for a future revision of this Service Information. Table 3-1.
List of Replaceable Parts 3.
Fluke 434-II/435-II/437-II Service Manual Figure 3-1. Parts and kits 1. Figure 3-2. Parts and kits 2.
List of Replaceable Parts 3.5 Accessories 3 3.5 Accessories Refer to the Fluke 434-II/435-II/437-II Users Manual, Chapter 26 – Tips and Maintenance, for a list with standard and optional accessories. The Users Manual can be downloaded from the Fluke website.
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Chapter 4 Performance Verification Title Page 4.1 Introduction..................................................................................................4-3 4.2 Equipment Required for Verification ..........................................................4-4 4.3 Relation between Characteristics and Performance Test.............................4-4 4.4 General Instructions.....................................................................................4-5 4.5 Operating Instructions.............
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Performance Verification 4.1 Introduction 4 4.1 Introduction Warning Procedures in this chapter should be performed by qualified service personnel only. To avoid electrical shock, do not perform any servicing unless you are qualified to do so. The Fluke 434-II/435-II/437-II Three Phase Energy & Power Quality Analyzer (referred to as Analyzer) should be calibrated and in operating condition when you receive it.
Fluke 434-II/435-II/437-II Service Manual 4.2 Equipment Required for Verification The primary source instrument used in the verification procedures of Fluke 434-II/435II/437-II is the Fluke 5700A. If not available, you can substitute another Calibrator as long as it meets the minimum test requirements. • • • • • • • • Fluke 5700A Calibrator. Test Leads (4x), as supplied with the Calibrator. Extra set of test leads capable to withstand 1000 V rms.
Performance Verification 4.4 General Instructions 4 4.4 General Instructions Follow these general instructions for all tests: • • • • • • It is recommended to remove the SD memory card from the Analyzer during the performance test to avoid that measuring data is written on it during the test. The SD card is located behind the battery door. For all tests, power the Analyzer with its power adapter. The battery pack must be installed and charged sufficiently.
Fluke 434-II/435-II/437-II Service Manual • Set Clamp for Phase and Neutral (select with F4) to 1 mV/A, 1000 A, x1, 1:1. To confirm press F5 – BACK. Set the Analyzer in DEMO mode: press SETUP, press F1 - USER PREF, and select DEMO ON with F2. Demo mode gives increased sensitivity at the voltage inputs. Warning: input voltage must not exceed 2 V rms in DEMO mode! 4.7.2 Accuracy Proceed as follows: 1. Must be checked for all phases A/L1, B/L2, C/L3, and N(eutral). 2.
Performance Verification 4.7. Verification of Current Inputs 4 9. Press SETUP . Then press F4 – MANUAL SETUP and use arrow keys and ENTER key to set the Analyzer to Current Clamp sensitivity (Phase and Neutral: select with F4) to 1 mV/A, 100 A, x10 AC only, 1:1. 10. On the Analyzer press MENU, select Volts/Amps/Hertz, press F5 – OK to enter the function. 11. Set the Calibrator to 100 mV, 60 Hz and OPR. 12. Use the up/down arrow keys to get A rms readout in the screen area.
Fluke 434-II/435-II/437-II Service Manual Table 4-2. Bandwidth Check of Current Channels (x1, AC + DC) Current Channel to be verified Readout at 60 Hz (adjust Calibrator with EDIT FIELD) Readout at 3 kHz A/L1 1000 A 945 A or more B/L2 1000 A 945 A or more C/L3 1000 A 945 A or more N 1000 A 945 A or more 8. Set the Calibrator to STBY. 9. Switch the Analyzer’s DEMO mode to OFF. 10. Disconnect the leads from the current inputs. 4.8 Voltage Inputs 4.8.
Performance Verification 4.8 Voltage Inputs 4 CALIBRATOR NORMAL HI LO A/L1 B/L2 A/L1 N C/L3 B/L2 C/L3 GND N POWER ADAPTER BC 430 ANALYZER INPUT BLOCK Figure 4-2. Checking the A/L1, B/L2, and C/L3 voltage inputs 3. To check the N input, connect the N input with the adjacent C/L3 input. A/L1, B/L2, C/L3 now will give zero reading. Refer to Figure 4-4. CALIBRATOR NORMAL HI LO A/L1 A/L1 B/L2 N C/L3 B/L2 C/L3 GND N POWER ADAPTER BC 430 ANALYZER INPUT BLOCK Figure 4-3.
Fluke 434-II/435-II/437-II Service Manual 1. Set the Analyzer to 120 V, 60 Hz nominal (SETUP menu, arrow and ENTER keys). Press MENU, select Volts/Amps/Hertz, press F5 - OK. 2. To check the A/L1, B/L2, C/L3 inputs: connect the N input to Ground (See Figure 43). 3. Set the Calibrator to 60 Hz, 60 V and then to OPR. 4. Fluke 434-II: check for a voltage readout V rms between 59.4 ... 60.6 V. Fluke 435-II/437-II: check for a voltage readout V rms between 59.88 ... 60.12 V. 5.
Performance Verification 4.8 Voltage Inputs 4 Accuracy Check of Channel N (Neutral): 11. Connect the N input with the C/L3 input (See Figure 4-4). A/L1, B/L2, C/L3 now give zero reading. 12. Set the Calibrator to 60 Hz / 60 V and then to OPR. 13. Fluke 434-II: check for a voltage readout V rms between 59.4 ... 60.6 V. Fluke 435-II/437-II: check for a voltage readout V rms between 59.88 ... 60.12 V. 14. Check the 120 V range according to the table below. Table 4-5.
Fluke 434-II/435-II/437-II Service Manual Table 4-6. Accuracy Check of Voltage Channels A/L1, B/L2, C/L3 Set Calibrator to Readout at Voltage Channels 115 V, 50 Hz, OPR Fluke 434-II: 113.8 ... 116.2 V Fluke 435-II /437-II: 114.77 ... 115.23 V 230 V, 50 Hz, OPR Fluke 434-II: 228.8 ... 231.2 V Fluke 435-II /437-II: 229.77 ... 230.23 V 460 V, 50 Hz, OPR Fluke 434-II: 458.8 ... 461.2 V Fluke 435-II /437-II: 459.77 ... 460.23 6. Set the Calibrator to STBY. Optional Test.
Performance Verification 4.8 Voltage Inputs 4 Table 4-8. Accuracy Check of Voltage Channel N (Neutral) Set Calibrator to Readout at Voltage Channel N 115 V, 50 Hz, OPR Fluke 434-II: 113.8 ... 116.2 V Fluke 435-II /437-II: 114.77 ... 115.23 V 230 V, 50 Hz, OPR Fluke 434-II: 228.8 ... 231.2 V Fluke 435-II /437-II: 229.77 ... 230.23 V 460 V, 50 Hz, OPR Fluke 434-II: 458.8 ... 461.2 V Fluke 435-II /437-II: 459.77 ... 460.23 V 15. Set the Calibrator to STBY. Optional Test.
Fluke 434-II/435-II/437-II Service Manual Table 4-9. Accuracy Check of Voltage Channels A/L1, B/L2, C/L3 Set Calibrator to Readout at Voltage Channels 200 V, 50 Hz, OPR Fluke 434-II: 198.0 ... 202.0 V Fluke 435-II /437-II: 199.60 ... 200.40 V 400 V, 50 Hz, OPR Fluke 434-II: 398.0 ... 402.0 V Fluke 435-II /437-II: 399.60 ... 400.40 V 800 V, 50 Hz, OPR Fluke 434-II: 798.0 ... 802.0 V Fluke 435-II /437-II: 799.20 ... 800.80 V 6. Set the Calibrator to STBY. Optional Test.
Performance Verification 4.8 Voltage Inputs 4 Table 4-11. Accuracy Check of Voltage Channel N (Neutral) Set Calibrator to Readout at Voltage Channel N 200 V, 50 Hz, OPR Fluke 434-II: 198.0 ... 202.0 V Fluke 435-II /437-II: 199.60 ... 200.40 V 400 V, 50 Hz, OPR Fluke 434-II: 398.0 ... 402.0 V Fluke 435-II /437-II: 399.60 ... 400.40 V 800 V, 50 Hz, OPR Fluke 434-II: 798.0 ... 802.0 V Fluke 435-II /437-II: 799.20 ... 800.80 V 15. Set the Calibrator to STBY. Optional Test.
Fluke 434-II/435-II/437-II Service Manual 5. Set the Calibrator to STBY. Optional Test. Bandwidth Check of Channel A/L1, B/L2, C/L3 (*): 6. Set the Calibrator to 215 V, 50 Hz and OPR. 7. Now check the voltage channels one by one. Use the Calibrator’s field edit function (AMPL/FREQ key) to adjust the Calibrator to an Analyzer readout of 215 V. 8. Increase the frequency to 3 kHz. Fluke 435-II/437-II: check for a readout of 204.2 V or more. Check the channels according to the table below. Table 4-13.
Performance Verification 4.9 Channel Isolation (*) 4 17. Increase the frequency to 3 kHz. Fluke 435-II/437-II: check for a readout of 204.2 V or more. 18. Set the Calibrator to STBY. Note: bandwidth will be slightly higher than in V/A/Hz mode because a low pass filter in the analog input channel is off during Transients mode. 4.9 Channel Isolation (*) This optional test verifies cross talk from voltage channels to current channels.
Fluke 434-II/435-II/437-II Service Manual CALIBRATOR NORMAL HI LO A/L1 B/L2 N C/L3 A/L1 B/L2 C/L3 50 OHM PIECE 50 OHM PIECE 50 OHM PIECE GND N 50 OHM PIECE Figure 4-4. Checking the Channel isolation.
Chapter 5 Calibration Adjustment Title Page 5.1 General.........................................................................................................5-3 5.1.1 Introduction ..........................................................................................5-3 5.1.2 Calibration number and date ................................................................5-3 5.1.3 General instructions..............................................................................5-3 5.1.
Calibration Adjustment 5.1 General 5 5.1 General 5.1.1 Introduction The following information, provides the complete Calibration Adjustment procedure for the Fluke 434-II/435-II/437-II Energy & Power Quality Analyzer (referred to as Analyzer). The Analyzer allows closed-case calibration using known reference sources. It measures the reference signals, calculates the correction factors, and stores the correction factors in RAM.
Fluke 434-II/435-II/437-II Service Manual • Power the Analyzer via the BC430 Power Adapter (or any other type that is recommended by Fluke as suitable). 5.1.4 Equipment required for calibration The primary source instrument used in the calibration procedures for Fluke 434-II/435II/437-II (Series II) is the Fluke 5700A Calibrator. If the required type is not available, you can substitute another Calibrator as long as it meets the minimum test requirements. • Fluke 5700A Calibrator.
Calibration Adjustment 5.3 Starting The Calibration • Operate • Press F5 5 to adjust each selected item Year, Month, and Day. to leave the SETUP DATE menu. 4. Select the calibration mode. The Calibration Adjustment Procedure uses built-in calibration setups, that can be accessed in the calibration mode. To enter the calibration mode proceed as follows: • Press and hold , press and release F5 , then release . The display shows the MAINTENANCE screen (Calibration Adjustment mode).
Fluke 434-II/435-II/437-II Service Manual Functions of the keys F1-F4 are: F1 PREV select the previous step F2 NEXT select the next step F3 CAL start the calibration adjustment of the actual step F5 EXIT leave the calibration mode 5.4 Contrast Calibration Adjustment After entering the calibration mode the display shows: WarmingUp (CL 0200):IDLE (invalid) now! If you did, turn the Analyzer off and on, and enter the Do not press F3 calibration mode again.
Calibration Adjustment 5.5 Warming Up 5 Figure 5-2. Version & Calibration data. 5.5 Warming Up The Warming Up state will be entered after entering the calibration mode (section 5.3), or after selecting the next step if you have done the Contrast Calibration step CL 120 (section 5.4). The display will show WarmingUp (CL 0200):IDLE (valid) or (invalid). Unless you want to calibrate the display contrast only, you must always start the calibration adjustment at the Warming Up (CL 0200) step.
Fluke 434-II/435-II/437-II Service Manual 5.6 Final Calibration Before starting the final calibration you must have done the Warming Up (section 5.5)! The final calibration is simple and straightforward and consists of the following elements: - Offset adjustment of voltage and current inputs (0 V input signal). - Low voltage adjustment of voltage and current inputs (0.67 V rms, 50 Hz input signal). - Low voltage adjustment of gain x10 of current inputs (0.2 V rms, 50 Hz input).
Calibration Adjustment 5.6 Final Calibration 5 CALIBRATOR NORMAL HI LO A/L1 B/L2 N C/L3 PM 9093 PM 9093 PM 9093 A/L1 B/L2 C/L3 RED PM 9082 GND N POWER ADAPTER BC 430 ANALYZER INPUT BLOCK PM 9092 Figure 5-3. Offset, Low Voltage, and Current Gain Adjustment 2. The display must show step CL 0300. If it does not, then press F1 or F2 1. to select the first calibration step in Table 5- 3.
Fluke 434-II/435-II/437-II Service Manual Table 5-1. Offset Adjustment of all Inputs Cal step Description Calibrator Setting CL 0300 OffsetLowVolt 0 V, 0 Hz, OPR CL 0310 Offset125Volt 0 V, 0 Hz, OPR CL 0320 Offset250Volt 0 V, 0 Hz, OPR CL 0330 Offset500Volt 0 V, 0 Hz, OPR CL 0340 Offset6KVolt 0 V, 0 Hz, OPR --- STBY --- 5.6.3 Low voltage and current gain adjustment Proceed as follows to do the Low Voltage and Current Gain Adjustment: 1. Press F2 to select calibration step CL 0400.
Calibration Adjustment 5.6 Final Calibration 5 CALIBRATOR NORMAL HI LO A/L1 A/L1 B/L2 N C/L3 B/L2 C/L3 GND N POWER ADAPTER BC 430 ANALYZER INPUT BLOCK Figure 5-4. Voltage Gain Adjustment 3. Set the Calibrator to supply 120 V, 50 Hz. Warning Dangerous voltages will be present on the calibration source and connection cables during the following steps. Ensure that the Calibrator is in standby (STBY) mode before making any connection between the Calibrator and the Analyzer. 4.
Fluke 434-II/435-II/437-II Service Manual Table 5-2. Voltage Gain Adjustment Cal step Description Calibrator Setting CL 0410 Gain125Volt 120 V, 50 Hz, OPR CL 0420 Gain250Volt 230 V, 50 Hz, OPR CL 0430 Gain500Volt 480 V, 50 Hz, OPR CL 0440 Gain6KVolt 600 V, 50 Hz, OPR --- STBY --- 9. Continue at section 5.7 5.7 Save Calibration Data And Exit Proceed as follows to save the calibration data, and to exit the Maintenance mode: 1. Remove all test leads from the Analyzer inputs. 2.
Calibration Adjustment 5.7 Save Calibration Data And Exit 5 Proceed as follows: • If you did the Warming Up and Pre-Calibration successfully (section 5.5), and you want to store the Pre-Calibration data before continuing with the Final Calibration: ⇒ Press F5 YES. When turning the Analyzer off and on again, it will show the message: The instrument needs calibration. Please contact your service center. The calibration date and number will not be updated.
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Chapter 6 Disassembling the Analyzer Title Page 6.1. Introduction.................................................................................................6-3 6.2. Disassembly & Reassembly Procedures.....................................................6-3 6.2.1 Required Tools .....................................................................................6-3 6.2.2 Removing the Tilt Stand, Hang Strap, and Side Strap .........................6-3 6.2.
Disassembling the Analyzer 6.1. Introduction 6 6.1. Introduction This section provides the required disassembling procedures. The printed circuit assembly removed from the Analyzer must be adequately protected against damage. The Analyzer contains static sensitive components. Handling and servicing these components should be done only at a static free workstation by qualified personnel. The Analyzer contains a Li-ion battery pack.
Fluke 434-II/435-II/437-II Service Manual Before opening the Analyzer, you must remove the Hang Strap and the Side Strap. How to remove and install the Hang Strap is explained in the Users Manual in Chapter 4. The grip of the Side Strap consists of two halves kept together with Velcro tape. After having opened it, the straps can be taken apart and be removed from their fixing dowels in the side of the Analyzer. Before doing this, take careful notice on the correct position of the strap.
Disassembling the Analyzer 6.2. Disassembly & Reassembly Procedures 6 keyboard and wiring of battery door detection are not damaged inbetween case parts. 6.2.4 Getting access to Top Side of PCA During disassembly, take careful notice of the position of isolation foils in so that you are able to install them in their original position. This is very important for the Analyzer’s safety. To get access to the top side, remove the upper plate (Shielding Lid): remove 4 pcs. M3 screws (total length of 6 mm).
Fluke 434-II/435-II/437-II Service Manual 4. Remove the remaining 2 selftapping screws 8.5 mm long (total length) that fix the Main PCA module to the top case assembly. The screws are located at the bottom side of the keyboard. 5. Separate the Main PCA module from the top case. 6. Now you have access to LCD-module, keypad foil and keypad. They can be separated from top case without the removal of screws or clamps.
Disassembling the Analyzer 6.2. Disassembly & Reassembly Procedures 6 Fig. 6-2. Dismantling step 2 (Top side of PCA attainable) Fig. 6-3.
Fluke 434-II/435-II/437-II Service Manual Fig. 6-3. Dismantling step 4 (Main PCA Module separated from front case) Fig. 6-5.
