PB500 Operating Instructions
Contents
1. 5 5 6 The measured soil resistivity will appear on the LCD after a few seconds To save the result refer to section 6 2 ERT 1557 Potential Electrode Current Electrode Figure 5 15 ERT1557 Operating Instructions 6 Memory Functions 6 1 Memory locations All memory locations are allocated a unique index number that is comprised of an identification code object identification number and measuring place Function code numbers are 1 Ra Two point amp Three point test 2 R O Clamp System Earth Resistance test 3 R Soil Resistivity test Object identification numbers can be selected between 001 and 999 Measuring place can be selected between 0 0 1 and 9 9 9 6 2 Storing results 6 2 1 Begin test measurement the value of the measured resistance is displayed on LCD 6 2 2 To store the result displayed on the LCD press the F4 shift F2 save function keys to enter the storage mode As an indication the small object identification number is displayed on the LCD 6 2 3 Press F1 A or F2 V function keys to select the desired object identification number 6 2 4 Press F4 Shift F2 V function keys once again to select the measuring place number 6 2 5 Press F1 A or F2 V function keys to select the desired measuring place ERT1557 Operating Instructions A 6 2 6 Each test resistance result can only be stored once at any selected object identification n2. ERT1557 Operating Instructions ESEAWARD Bracken Hill South West Industrial Estate Peterlee Co Durham SR8 2SW England Tel 44 0 191 586 3511 Fax 44 0 191 586 0227 www seaward co uk sales seaward co uk service seaward co uk ERT1557 Operating Instructions 2007 Seaward Electronic Figure 1 ERT 1557 Front View Figure 2 ERT 1557 End View ERT1557 Operating Instructions Limited Warranty amp Limitation of Liability SEAWARD Electronic Limited guarantees this product to be free from defects in material and workmanship under normal use and service for a period of 1 year The period of warranty will be effective at the day of delivery c Copyright 2008 All rights reserved Nothing from this edition may be multiplied or made public in any form or manner either electronically mechanically by photocopying recording or in any manner without prior written consent from SEAWARD Electronic Limited This also applies to accompanying drawings and diagrams Due to a policy of continuous development SEAWARD Electronic Limited reserves the right to alter the equipment specification and description outlined in this publication without prior notice and no part of this publication shall be deemed to be part of any contract for the equipment unless specifically referred to as an inclusion within such contract ERT1557 Operating Instructions Disposal of Old Product This product has b
3. Part 1 General requirements BS EN 61557 1 5 1997 Electrical safety in low voltage distribution systems up to 1000V a c and 1500V d c Equipment for testing measuring and monitoring of protective measures BS EN 61326 1998 Electrical equipment for measurement control and laboratory user EMC Requirements Performance The instrument operates within specification when used under the conditions in the above standards EMC and Safety Standards The product identified above conforms to the requirements of Council Directive 89 336 EEC and 73 23 EEC Seaward Electronic Ltd is registered under BS EN 1S09001 2000 Certificate No Q05356 ERT1557 Operating Instructions Introduction The ERT 1557 is a fully featured earth resistance and soil resistivity tester housed in a rugged PrimeTest series enclosure and supplied complete with all necessary test leads and test spikes The instrument will perform tests in accordance with BS7671 and IEC61557 The instrument is capable of 2 3 and 4 pole resistance measurement and earth resistance using a current clamp Up to 500 measurements can be stored in memory indexed via a simple reference numbering system Results can be downloaded to PC ERT1557 Operating Instructions 1 User Notes This instrument and its operating instructions are intended for use by adequately trained personnel The following symbols are used in these operating instructions and on the ERT 1557 A Wa
4. E test leads to the test point 5 3 3 Connect the H and S test leads to the 2 test spikes as shown in figure 3 5 3 4 Press and release the TEST key The measured resistance will appear on the LCD after a few seconds To save the result refer to section 6 2 5 4 R Using current clamp Aa ensure that the circuit under test is lt 30Vrms 5 4 1 Rotate the rotary switch until the RaO test is selected 5 4 2 Connect the Es and E test leads to the test point 5 4 3 Connect the H and S test leads to the 2 test spikes as shown in figure 4 ERT 1557 a End Panel Clamp input Ea Top panel E ES Potential Electrode RE1 RE2 RE3 REn Figure 4 ERT1557 Operating Instructions 5 4 4 Press and release the TEST key The measured resistance will appear on the LCD after a few seconds To save the result refer to section 6 2 5 5 RA 4 Pole 5 5 1 Rotate the rotary switch until the Ra 4pole test is selected 5 5 2 Connect the Es E H and S test leads to the test spikes 5 5 3 Insert the test spikes into the ground in the order E Es S and H Ensure the spikes are equi spaced 5 5 4 Input the appropriate distance between the test spikes into the ERT1557 by pressing the F3 Distance function key Press F1 A or F2 V function keys to either increment or decrement the distance in metres 5 5 5 To perform the soil resistivity test press and release the TEST function key
5. ad Function To download data the operator must connect the ERT1557 to a computer using the supplied USB to miniDin connector and the hyper terminal communications program supplied with the computer Always ensure that the USB cable assembly is A not connected to a computer before performing any of the test functions available with an ERT 1557 7 1 COM Port Identification 7 1 1 Identification of the COM port utilised by the ERT1557 is dependent on the operating system used by that computer 7 1 2 The following is a guide for a computer with an XP operating system and should be viewed for reference only where computers with alternative operating systems are employed 7 1 3 Right click on the My Computer icon from the computer desktop menu Select the Manage function from the displayed list 7 1 4 Select Device Manager from the Computer Management pop up box From the list of devices select Ports COM amp LPT Computer Management File Action View Window Help e oms a 1S Computer Management Local oa i System Tools GJ Bluetooth Devices E Event viewer i Computer fag Shared Folders Disk drives g Performance Logs and Alerts 1 DVD CD ROM drives Device Manager i Floppy disk controllers ij Storage d Floppy disk drives Removable Storage IDE ATA ATAPI controllers Disk Defragmenter Ge Keyboards Disk Management T Mice and other pointing devices fa Services and Appli
6. ayed on the LCD Repeat step 6 3 1 to recall results from other memory locations 6 4 Erasing individual results 6 4 1 6 4 2 6 4 3 6 4 4 6 4 5 6 4 6 Press F4 Shift F1 Recall function keys to enter recall mode As an indication the small object identification number and RCL are displayed in the bottom right hand corner of the LCD Press F1 A or F2 V function keys to select the desired object identification number Press F4 Shift F1 Recall function keys once again to select the measuring place field Press F4 Shift F2 V function keys once again to select the measuring place number Press F4 Shift F3 Distance function keys to clear the displayed earth resistance The LCD display will indicate Clr When an attempt is made to clear a memory location where no result is stored then the message no is displayed on the LCD 6 5 Clearing all the memory 6 5 1 6 5 2 6 5 3 Select the rotary switch to Data Clear position Press F4 Shift F3 Distance function keys to clear all memory locations As an indication message Clr starts blinking on the LCD display Press F4 Shift F3 Distance function keys once again to erase the whole memory The LCD 18 ERT1557 Operating Instructions display goes blank indicating that erasing of memory is in progress Once the memory is erased a message Clr is indicated on the display ERT1557 Operating Instructions 7 Downlo
7. cations a Monitors MB Network adapters Y Ports COM amp LPT A Bluetooth Communications Port COM3 A7 Communications Port COM 2Y Communications Port COM2 A CP210x USB to UART Bridge Controller COM oY Printer Port LPT1 E Processors Sound video and game controllers 20 ERT1557 Operating Instructions 7 1 5 Identify the COM port associated with CP210x USB to UART Bridge Controller This is COM4 in the example shown 7 2 Hyper Terminal Setup Procedure 7 2 1 Install the USB driver provided as part of the supplied accessories on a PC Depending on the computer operating system 7 2 2 Some computer operating systems are not supplied with the hyper terminal program In this case the program can be downloaded free from the internet 7 2 2 Open the hyper terminal communications program on the PC Path start All Programs Accessories Communications HyperTerminal 7 2 3 Enter the name of the hyper terminal connection e g ERT Download Click on the OK prompt softkey and select the appropriate COM port to which the USB is connected Click on the OK prompt softkey 7 2 4 Hyper Terminal configuration port settings are Baud Rate 4800 Bps No of Data bits 8 Parity None Stop bit 1 Flow Control None Click on the OK Prompt softkey 7 2 5 The following screen is displayed on the PC monitor EDIN ERT1557 Operating Instructions ERT Download HyperTerminal Ele Edit View Call Tra
8. dicated below Example Download txt Notepad File Edit Format View Help OBJECT 000 PLACE 001 EARTH Resis OBJECT 013 SRT Resis OBJECT 023 EARTH Resis 99 6 Ohm gt Ln 4 Col 2 7 4 3 Where OBJ and PLACE represent the object identification number and measuring place respectively These identify the memory location where the result has been stored 23 ERT1557 Operating Instructions 7 4 4 Earth Resis identifies the 2 and 3 point earth resistance test method 7 4 5 Clamp Resis identifies the earth resistance clamp test method 7 4 6 SRT Resis identifies the soil Resistivity test method 7 4 7 Where D is the repeatable distance between all earth spikes in metres E g D 01 specifies a distance of 1 metre 24 ERT1557 Operating Instructions 8 Electrical Specifications 8 1 Earth Resistance Two Three Pole Method Display Range Measurement Ranges Accuracy Measuring frequenc Measuring current Measuring voltage Distortion 0 000 to 50 0kQ 0Q 19 99Q Resolution 0 01Q 20Q 199 9Q Resolution 0 1Q 2009 199 9Q Resolution 1Q 1 00KQ 9 99KQ Resolution 10Q 10 0KQ 50 0KQ Resolution 100Q 2 2 counts from OQ 999Q 5 2 counts from 1 00kQ 50 0kQ 125 Hz 1HZ lt 20mA effective lt 30V effective sine wave Max 5V p p 50Hz 8 2 Earth Resistance Current Clamp Method Display Range 0 000 to 2 0kQ Measurement 0 5Q 19 9Q R
9. een designed and manufactured with high quality materials and components that can be recycled and reused When the crossed out wheelie bin symbol is attached to a product it means the product is covered by the European Directive 2002 96 EC Please familiarise yourself with the appropriate local separate collection system for electrical and electronic products Please dispose of this product according to local regulations Do not dispose of this product along with normal waste material The correct disposal of this product will help prevent potential negative consequences for the environment and human health ERT1557 Operating Instructions Table of Contents Table of Contents 5 CERTIFICATE OF CONFORMITY 6 Introduction 7 1 User Notes nnsneeeeenneeeeeesrrnnrrrrreesrrnnrnrrreesennn 8 2 Safety NOTSS ies anale di desde dattes 9 SB ACCESSONES resien are D ON etre i aE Ten 10 3 1 Standard Accessories 10 3 2 Optional Accessories 10 4 Unit Description 11 4 1 Identifying parts of the unit 11 4 2 LCD display messages 11 4 3 Keypad operation 12 5 Using the ERT 1557 13 S1 Power On reaa e a T a E 13 5 2 Battery Health Check 13 5 3 RA S POle t nor 13 5 4 Ra Using current clamp 14 5 5 RACE POI LEE ane 15 6 Memory Functions is sissurirsririiireisreiireitreiieeieneian 16 6 1 Memory locations 16 6 2 St
10. ery Replacement Before opening the ERT1557 ensure that it is disconnected from all voltages Electric shock danger 10 3 1 Power the unit off by selecting the Off position on the rotary switch 10 3 2 Disconnect all the test leads from the unit 10 3 3 Position the ERT 1557 face down and release the captive screw in the battery compartment cover 10 3 4 Remove the battery compartment cover 10 3 5 Remove the discharged batteries from the compartment 10 3 6 Fit a new set of alkaline batteries 10 3 7 Relocate the battery cover over the battery compartment and fasten in position with the battery cover captive screw 10 4 Service and Calibration To maintain the specified accuracy of the measurement results the instrument must be recalibrated at regular intervals by either the manufacturer or an authorised Seaward Service Agent We recommend a recalibration period of one year 229 ERT1557 Operating Instructions 10 5 Spare Parts Seaward Part No Test Cable Kit 44B167 USB to MiniDIN Lead 362W505 Assembly Carrying Case 270A951 For Service and Calibration contact Service Department Seaward Electronic Bracken Hill South West Industrial Estate Peterlee Co Durham SR8 2SW England Tel 0191 5878739 0191 5878737 Email service seaward co uk 30 ERT1557 Operating Instructions 362A550 Rev 1 s 91
11. esolution 0 10 Ranges 20Q 9990 Resolution 10 1 00Q 2 00kQ Resolution 10Q Accuracy 5 2 counts Measuring 125 Hz 1Hz frequency Measuring lt 20mA effective current Measuring lt 30V effective sine wave voltage Distortion Max 5V p p 50Hz Note the stated accuracy of the earth resistance current clamp method does not include errors introduced by the current clamp 25 ERT1557 Operating Instructions 8 3 Specific Earth Resistance Display 0 00Qm to 320kQm Range Measurement 0OQm 19 99Qm Resolution 0 01Qm Ranges 209m 199 9Qm Resolution 0 1Qm 200Qm 999Qm Resolution 1Qm 1 00kQm 9 99kQm Resolution 10Qm 10 00kQm 99 9kQm Resolution 100Qm 100kQm 320kQm_ Resolution 1kQm Accuracy 2 2 counts 0Qm 6 3kQm 5 6 3kQm 320kOm Measuring 125 Hz 1Hz frequency Measuring lt 20mA effective current Measuring lt 30V effective sine wave voltage Distortion Max 5V p p 50Hz 26 ERT1557 Operating Instructions 9 Environmental Conditions 9 1 The ERT 1557 has been designed to perform tests and measurements in a dry environment 9 2 Maximum barometric elevation for making measurements is 2000M 9 3 Overvoltage category IEC 60664 IEC 61010 300V Category II 9 4 Pollution degree 2 according to IEC 61010 1 9 5 Protective system IP40 according to IEC 60529 9 6 Electromagnetic compatibility EMC Interference immunity and emitted interfe
12. h the following items 1 off ERT 1557 unit 1 off 5 m black test lead 1 off 20 m red test lead 1 off 5 m green test lead 1 off 20 m blue test lead 1 off USB to MiniDIN Lead Assembly 1 off Operating Instruction Manual 4 off test spikes 3 2 Optional Accessories Current Clamp Seaward Part No 278A923 Carry case Seaward Part No 270A951 A Do not open unit no serviceable parts ERT1557 Operating Instructions 4 Unit Description The ERT 1557 is a hand held earth resistance tester Tests are selected using the rotary switch 4 1 Identifying parts of the unit The numbering below refers to fig 1 and fig 2 LCD Display Function keys F1 F2 F3 and F4 TEST key Rotary Switch Test lead inputs Es E S andH Current clamp input Current clamp input Data port DANONE G DR 4 2 LOD display messages Display Meaning gt 50kQ Result is above the measuring range for 2 and 3 point earth resistance gt 2kQ Result is above the measuring range for current clamp earth resistance gt 1999kQm Result is above the measuring range for earth resistivity A More than 20Veff noise present The ERT 1557 is unable to make a measurement RP The resistance between the Potential test spike and earth is too high RC The resistance between the Current test spike and earth is too high No Request cannot be executed e g result cannot be stored in a particular memory location or particular result cannot be recal
13. led 001 Memory location identifier 0 0 1 Measurement location identifier Alternate The ES and E connections are E ES ES S reversed Correct the problem to proceed Stor Storing result RCL Recalling result Prt Downloading data mode 11 ERT1557 Operating Instructions Clr Deleting a result from memory 4 3 Keypad operation Key Function F1 Increase numerical value F4 F1 Recall data from memory F2 Decrease numerical value F4 F2 Save result to memory F3 Select distance between test spikes F4 F3 Clear memory TEST Start measurement ERT1557 Operating Instructions 5 Using the ERT 1557 5 1 Power On To turn the ERT 1557 on simply rotate the rotary switch to the required test type 5 2 Battery Health Check The ERT 1557 will automatically perform battery health checks prior to a test performing Note When the battery symbol is flashing all tests will be inhibited and the batteries should be replaced as described in section 8 4 Do not connect any voltage or power source to the current clamp inputs Damage to the ERT 1557 will occur 5 3 RA 3 Pole A ensure that the circuit under test is lt 30Vrms 5 3 1 Rotate the rotary switch until the Ra 3pole test is selected ERT 1557 Earth Potential Current Electrode Electrode Electrode Figure 3 ERT1557 Operating Instructions 5 3 2 Connect the Es and
14. nsfer Help Dees 24 E Connected 00 04 06 Auto detect Auto detect 7 3 Download Data 7 3 1 Select the Data Send function on the rotary switch As an indication Prt is displayed on the LCD display 7 3 2 Select Transfer pull down menu in the hyper terminal window Select the Receive File option 7 3 3 Using the Browse softkey select the destination folder where the data file in the ERT1557 can be stored Use the receiving protocol drop down box to select the Xmodem protocol from the available list M Receive File Place received file in the following folder C My Documents Use receiving protocol modem v Receive Close Cancel 7 3 4 Click on the Receive prompt softkey and enter a filename that the ERT1557 data will be stored within 22 ERT1557 Operating Instructions M Receive Filename modem never sends a filename so you must specify a filename for storing the received file Folder C My Documents Filename Example Download tst 7 3 5 Press the TEST button on the ERT1557 then click on the OK prompt softkey The data file from the ERT1557 is now downloaded to the previously specified file Example Download txt 7 3 6 The Xmodem window is displayed during downloading of data and closed on successful completion of the download function 7 4 View Download Data 7 4 1 The operator can now access the data download file specified in 7 2 4 7 4 2 The data is displayed in the format in
15. oring results cccccceeeesseeeeeeeeeeeeeetees 16 6 3 Recalling Results 17 6 4 Erasing individual results 18 6 5 Clearing all the memory 18 7 Download Function 20 7 1 COM Port Identification ccceeees 20 7 2 Hyper Terminal Setup Procedure 21 7 3 Download Data 22 7 4 View Download Data eeeeeeeeeeee 23 8 Electrical Specifications cccccccccccececeeeeeeeeeees 25 8 1 Earth Resistance Two Three Pole Method 25 8 2 Earth Resistance Current Clamp Method 25 8 3 Specific Earth Resistance 26 9 Environmental Conditions cssseeeseeeeeeeeeee 27 10 Maintenance 28 10 1 Securing the ERT 1557 28 10 2 GlANING s ssccciesredecadadsleddlecadetudad latednicsls 28 10 3 Battery Replacement eeeeeeeeees 29 10 4 Service and Calibration 29 10 5 Spare Parts 30 ERT1557 Operating Instructions CERTIFICATE OF CONFORMITY As the manufacturer of the apparatus listed Seaward declare under our sole responsibility that the product ERT 1557 To which this declaration relates are in conformity with the relevant clauses of the following standard BS EN 61010 1 2001 Safety requirements for electrical equipment for measurement control and laboratory use
16. rence conforming to IEC 61326 1 9 7 Operating temperature range of 0 C to 40 C without moisture condensation 9 8 The ERT 1557 can be stored at any temperature in the range 25 C to 65 C relative humidity up to 90 The batteries should be taken out of the instrument for storage 9 9 Operating Altitude 0 to 2000 metres 27 ERT1557 Operating Instructions 10 Maintenance 10 1 Securing the ERT 1557 Under certain conditions safe operation of the ERT 1557 can no longer be assumed 10 1 1 Visible damage of the instrument case 10 1 2 Incorrect measurement results 10 1 3 Recognisable abuse to the instrument due to prolonged storage under improper conditions 10 1 4 Recognisable abuse to the instrument due to extraordinary transportation stress 10 1 5 Check the battery compartment for signs of battery electrolyte leakage 10 1 6 In these cases the ERT 1557 should be immediately switched off disconnected from any test or measurement function and secured to prevent any further use 10 2 Cleaning 10 2 1 Clean the external case of the ERT 1557 witha clean dry cloth 10 2 1 Avoid using solvents and abrasive scouring agents to clean the external case of the ERT 1557 10 2 3 Check the battery contacts and compartment are free of electrolytic contamination 10 2 4 Any contamination of the battery contacts or compartment should be cleaned with a dry cloth 28 ERT1557 Operating Instructions 10 3 Batt
17. rning of electrical danger Indicates instructions must be followed to avoid danger to persons Important follow the documentation This symbol indicates that the operating instructions must be adhered to in order to avoid danger ERT1557 Operating Instructions 2 Safety Notes This ERT 1557 is fully compliant with the requirements of BS EN 61010 1 2001 BS EN 61557 part 1 and 5 In order to ensure safe operation of this instrument all notes and warnings in these instructions must be observed at all times A The ERT 1557 has been designed to make measurements in a dry environment The ERT 1557 may be used to test circuits with a maximum overvoltage Category Il 300V AC DC with reference to earth The ERT 1557 and all associated cables and leads must be checked for signs of damage before equipment is operated Where safe operation of the ERT 1557 is no longer possible it should be immediately shut down and secured to prevent accidental operation It must be assumed that safe operation is no longer possible if the instrument or leads show visible signs of damage or the instrument does not function or after long periods of storage under adverse environmental conditions If the ERT 1557 is used in a manner not specified by this document then the protection provided by the equipment may be impaired 9 ERT1557 Operating Instructions 3 Accessories 3 1 Standard Accessories The ERT 1557 is supplied wit
18. umber or measuring place If an attempt is made to store a result in a location already utilised the LCD displays no Press F4 Shift F2 V function keys once again to save the test result under both the selected object identification number and measuring place The LCD displays Stor on the viewing screen before storing the resistance value 6 3 Recalling Results 6 3 1 6 3 2 6 3 3 6 3 4 6 3 5 6 3 6 To Recall a stored result press F4 Shift F1 Recall function keys to enter recall mode As an indication the small object identification number and RCL are displayed in the bottom right hand corner of the LCD Press F1 A or F2 V function keys to select the desired object identification number Press F4 Shift F1 Recall function keys once again to select the measuring place field Press F4 Shift F2 V function keys once again to select the measuring place number Press F4 Shift F1 Recall function keys once again to recall the result at the selected memory location and identified by both the selected object code and measuring place number The LCD display firstly indicates the function test code for one second followed by the optional distance measurement a requirement of the R O Clamp test followed by the stored earth resistance value ERT1557 Operating Instructions 6 3 7 6 3 8 If there are no stored results in the selected memory location then a message no is displ
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