L7486R Cromwell Word Distribution 8 Inch Bench Grinder KOBE GB 200 December 2009 MD

Transcription

1 age 1 of 15 L7486R Cromwell Word Distribution 8 Inch Bench Grinder KOBE GB 200 December 2009 MD

2 age 2 of 15 SUMMARY TEST REORT BS EN : 2000, with BS EN : 2003 Safety of transportable motor-operated electric tools - articular requirements for bench grinders Report Reference No: L7486R Compiled by (+ signature): T. Haworth... Approved by (+ signature): K. G. Richens... Date of issue: 16 th March 2011 Testing Laboratory: Address: Testing location/procedure: Address: Cranage EMC Testing Stable Court, Oakley, Nr Market Drayton, Shropshire. TF9 4AG As above As above Applicant s name: Cromell World Distribution Address: Dock 16/17 65, Chartwell Drive Wigston Leicester. LE18 2FS Test specification: Standards: BS EN : 2000 with BS EN : 2003 Safety of transportable motor-operated electric tools - articular requirements for bench grinders Test procedure: Non-standard test method: Cranage Test item description: Trade Mark: Manufacturer: Model/Type reference: Description: Ratings: Kobe Industrial ower Tools GB 200 Bench Grinder 220 / 240V, 50Hz, 12A

3 age 3 of 15 Test item particulars... : Classification of installation and use...: Supply Connection...: urpose...: Environment...: Class I, fixed installation 240V, plug connected Grinding and sharpening of materials Indoor use, I20 ossible test case verdicts: - test case does not apply to the test object...: - test object does meet the requirement...: (ass) - test object does not meet the requirement...: F(Fail) Testing...: Date of receipt of test item...: 08/03/11 Date (s) of performance of tests...: 16/03/11 and 14-15/12/09 (from previous report) Attachments: 1) hotographs 2) Schematic and Technical Diagrams General product information: The product is a bench mounted grinder with two 200mm (8 inch) grinding wheels. It is powered by mains voltage, 240V 50Hz and is connected via a standard UK BS1363 plug. It is Class I electrical equipment requiring an earth connection. Summary of testing: The product has been resubmitted following the previous report L7423R. The deficiencies identified in that report have now been corrected, and the product meets the requirements of EN and EN This report contains the results of the re-examination, together with the test results obtained from the previous report.

4 age 4 of 15 Clause Requirement Comments /F 1 Scope The EUT is within the scope of EN and EN Definitions Considered 3 General Requirement The EUT is constructed from suitable materials for safe use and reasonably foreseeable misuse 4 General notes on tests Considered 5 Rating The equipment is suitably marked for 240V single phase use. 6 Classification Appliances are classified according to protection against electric shock: Appliances have the appropriate degree of protection against water ingress The appliance is Class I The EUT is for indoor installation and requires has no I rating for water. I20 is adequate 7 MARKING AND INSTRUCTIONS 7.1 Appliance is marked with electrical rating and manufacturers name or trade mark and model type and origin articular marking requirements for bench grinders 7.6 Where symbols are used, they comply with this section 7.7 Terminals for the neutral are marked N Terminals for earth are marked 7.9 The markings required by the standard are durable and legible 7.13 Adequate instructions for use are provided, including particular requirements for bench grinders. Made in Thailand The maximum diameter of the wheel is now correct. The warning (or symbol) to wear safety glasses is now present The O and I symbols are used correctly. The arrows indicating direction of rotation of the wheel are now pointing in the correct direction. resent The petroleum rub tests carried out without loss of information Adequate instructions supplied.

5 age 5 of 15 8 ROTECTION AGAINST ACCESS TO LIVE ARTS 8.1 Construction to provide protection against accidental contact 8.2 arts providing protection against electric shock have adequate strength and no not work loose in normal use 8.3 Shafts of operating knobs and handles are not live 8.4 Handles of knobs and switches are insulated or adequately separated from live parts 8.5 Capacitors are not connected to metal parts of class II tools 8.6 There is no risk of electric shock from charge capacitors. The test finger and test probe cannot contact live parts in normal use None present The O/I switch is insulated Class I The voltage on the plug pins does not exceed 5V 1 second after disconnection 9 STARTING 9.1 Tools start under all normal conditions of use 9.2 Overload protection does not operate under normal starting conditions 10 INUT AND CURRENT 10.1 The input of the tool does not exceed the values in table 1 in normal operating conditions 10.2 Tools marked with rated current do not exceed the rating by more than 15% under normal conditions. <3A drawn.

6 age 6 of HEATING 11.1 There are no excessive temperatures in normal use The temperature of surfaces complies with the required limits. See below. t 1 = 20ºC Maximum ambient room temperature during the tests t 2 = 20ºC Minimum ambient room temperature during the tests Test voltage 240V (x0.94 and x1.06) Measured parts (Highest temperatures are recorded) Max Temp rise measured Max Temp rise limit allowed Accessible metal parts Motor Mains O/I switch 3 50 Mains cable 2 50 Mains capacitor 5 20 Notes:

7 age 7 of LEAKAGE CURRENT 12.1 Leakage current does not exceed the limits permitted in normal use. Leakage current measurement Earth leakage <0.1mA 13 ENVIRONMENTAL REQUIREMENTS 13.1 Dust collection devices if specified by the manufacturer are measured in accordance with EN The mean value of noise emitted when using the tool in normal use is specified in the user instructions Dust collection devices not used Not present, however labelling indicates the requirement to wear ear defenders 13.3 Vibration Not applicable to bench grinders 14 ROTECTION AGAINST INGRESS OF FOREIGN BODIES AND MOISTURE RESISTANCE 14.1 Tools marked with a degree of ingress protection meet the requirements under working conditions 14.2 Tools with a degree of protection greater than IX0 comply with EN60529 Not marked (Enclosure meets I20 test finger) No greater than IX Tools withstand humidity encountered in normal conditions 15 INSULATION RESTANCE AND ELECTRIC STRENGTH 48 hours at 93% followed by electric strength 15.1 Tools have adequate insulation resistance and electric strength 15.2 The insulation resistance measure at 500V is not less than shown in table The insulation is subjected to the high voltage test shown in table 4 for 1 min (see below) >10mΩ recorded. (L/N to accessible earthed parts) 1250V applied. (L/N to accessible earthed parts) 16 ENDURANCE 16.1 Tools are constructed so that in extended normal use there is no electrical or mechanical failure that might impair compliance 16.2 The tool is operated intermittently for 24 hours at 0.9 and 1.1 times the rated input. 100 on/off cycles 16.3 Tools with automatic or centrifugal starting switches are operated times No adverse affects Not present

8 age 8 of ABNORMAL OERATION 17.1 Tools are designed so that hazards resulting from careless operation are obviated as far as practical; - with cutting parts removed, motor operated at 1.3 times rated voltage or upper end of voltage range Tools incorporating electronic control devices. Winding temperature not exceeded or windings loosened None present Switches for motor reversal None present 18 STABILITY AND MECHANICAL HAZARDS 18.1 Moving or other dangerous parts are arranged or enclosed as far as practical in to prevent injury, in keeping with the tool function Enclosures covers and guards have adequate mechanical strength Fixed guards are present for parts of the tool where infrequent access is required Where more frequent access is required movable guards are provided Use and adjustment of guard do not create other dangers All working elements of the tool are secured so that they cannot create hazards during normal working Is is not possible to touch dangerous parts through removal of detachable parts of dust collecting systems Bench grinders are equipped with an adequate guarding system that cannot be removed without a tool Bench grinders are equipped with guards with only leave parts uncovered as permitted by On straight sided wheels the guard covers the flange and spindle end The guard is designed so that wheels greater than 1.07 times the marking on the tool cannot be fitted Guards for straight sided wheels meet the thickness requirements of table Z102 for steel or Z103 for aluminium resent The eye shields are moveable, as required None present resent. Steel guards are 2.5mm thick (Strength test not carried out)

9 age 9 of 15 Bench grinders have a spark arrester to limit the ejection of sparks from the wheel guard The spark arrester covers the width of the wheel and is adjustable to within 2mm of the wheel surface Bench grinders are equipped with work rests, adjustable to within 2mm of the wheel surface Wheel flanges are made from suitable material complying with table 101 Brush flanges are made from suitable material complying with table 101 Torque test for flanges not fulfilling the above Bench grinders are fitted with transparent screens designed to prevent projection of particles towards the eyes The screen dimensions are such that in normal conditions the operator can only see the working part of the wheel through the screen Adjusting the screen does not adjust other parts of the tools The screen is made of appropriate materials such as ply glass or polycarbonate The minimum dimensions of transparent screens is in accordance with figure rotection against contact with the shaft of a brush when the brush is not fitted not fitted is present 18.2 Tools intended for use without fixings to floor or bench have adequate stability 18.3 Tools have adequate stability when subject to their most onerous use described in the user documentation 18.4 Accessible parts likely to be touched are free from sharp edges, burrs etc. Steel flanges are 70mm x 12.6mm No brushes Not required resent No brush attachment Bench grinders require fixing points resent with instructions

10 age 10 of MECHANICAL STRENGTH 19.1 Tools have adequate mechanical strength and are constructed to withstand such rough handling as might be present in normal use 19.2 The tool withstands the spring loaded impact hammer tests of table Brush holders and their caps have adequate mechanical strength None present 20 CONSTRUCTION 22.1 The construction of appliances shall be Class I, II or III only, and shall meet the requirements of clauses 22.2 to Switch are located such that accidental operation is unlikely. Compliance is checked by attempted operation of switch with a 100mm sphere 21 INTERNAL WIRING Wireways shall be smooth and free from sharp edges. Insulation of internal wiring shall meet the voltage and temperature requirements. Green/yellow colour combination shall only be used for earthing conductors. Compliance is checked by inspection and the relevant tests of clauses 21.1 to 21.8 Class I The switch is now adequately protected. The 100mm sphere cannot operate the tool power O/I switch. The mains wiring labelling is now correct 22 COMONENTS 22.1 Components comply with the relevant CENELEC or IEC standards wherever they reasonably apply 22.2 Mains switches have a contact separation of at least 3mm 22.3 Mains switches are not fitted to flexible cords 22.4 Overload protection devices are nonself-resetting 22.5 lugs and appliance inlets for SELV circuits 22.6 Capacitors are not connected between the terminals of thermal cut-outs There are few components, however the motor and the thermal protection are critical and evidence of adequate thermal protection has been submitted. VDE file Approved mains switch used The limited information provided indicates that the device used auto-resets at 135ºC None present

11 age 11 of EMC components are not connected inside plugs 22.8 Interference suppression inductors doe not attain excessive temperature 22.9 Appliance connectors comply with IEC SULY CONNECTION AND EXTERNAL FLEXIBLE CABLES AND CORDS Tools are provided with a type M attachment, type X attachment or an appliance inlet, and complying with clauses 23.1 to TERMINALS OF EXTERNAL CONDUCTORS Tools are provided with terminals having screws, nuts or equally effective devices for connection of the supply conductors in accordance with clauses 24.1 to None fitted None present The attachment complies. Type M is used with crimped spade terminal connections Adequate terminals for the type M attachment are provided 25 ROVISION FOR EARTHING 25.1 Accessible parts of Class I tolls are reliably connected to earth 25.2 Earth connections are not made by using screwless terminals 25.3 There is no risk of corrosion between copper and the terminal contact 25.4 The supply conductor lengths are arranged such that the earth conductor is last to become taught in the event of cable slippage The earth wire is now the longest wire 25.5 The contact resistance between the terminal and earthed parts does not exceed 0.1Ω 0.03Ω measured at 25A 25.6 Screw terminals for earthing serve no other purpose 26 SCREWS AND CONNECTIONS 26.1 Fixings and electrical connections shall withstand the mechanical stresses encountered in normal use, and meet the requirements of clauses 26.2 to 26.5

12 age 12 of CREEAGE DISTANCES, CLEARANCE AND DISTANCE THROUGH INSULATION 27.1 Creepage, clearances and distances through insulation comply with the requirements of table Distances through insulation for voltages up to 250V between metal parts are >1mm Mains switch complies 27.3 Tools with rated current >25A Not applicable 28 RESISTANCE TO HEAT, FIRE AND TRACKING 28.1 External parts of insulating material are resistant to heat 28.2 Insulating parts retaining live parts are resistant to abnormal heat and fire 28.3 Insulating parts retaining live parts in position and insulation of metal encase Class II tools Mains cord is approved material The mains switch is an approved part Not applicable 29 RESISTANCE TO RUSTING Ferrous parts that might cause the tool to become unsafe are resistance to rusting No parts at risk 30 RADIATION Tools do not emit harmful radiation. There are no significant sources. EMC radiation has been subject to a separate report

13 age 13 of 15 ATTACHMENT 1: HOTOGRAHS External view with revised labeling Wiring, cover removed. Earth wire is now longest. Labeling correct

14 age 14 of 15 ON/OFF switch now protected against accidental operation

15 age 15 of 15 ATTACHMENT 2: TECHNICAL DIAGRAM