Posted for Fowell Whitfield:
------------------------ From: fwhitfi...@rheintech.com Subject: AFG1A Gyratory Compactor Date: Mon, 1 Mar 1999 18:41:55 -0500 To: emc-p...@ieee.org > I am currently evaluating a device from Pine Instrument Company that > needs to be tested according to the EN 61010-1 Safety Standard. (i.e. > Safety requirements for electrical equipment for measurement, control, > and laboratory use). The device is used to test asphalt samples and > can be used both in the field and in the laboratory.I have not seen > the actual device yet but I have a number of photographs. > > The input specifications are 15 amps at 115 Vac. The client needs > answers to the following questions: > > 1. Should the specified current rating be the maximum or typical? > 2. Can ground wires with crimped on ring terminals be stacked onto > ground studs? How many per stud ? > 3. The AC power entry module is rated 15 A. The breaker/switch is > rated 15 A. Are these ratings okay? > 4. Do the diode bridge in the transformer secondary and the filter > capacitor need to have or agency approval or recognition ? > 5. An OMRON G7L general purpose relay is used in the primary circuit. > It has the following specifications: > > - High-capacity, high-withstand voltage relay compatible with > momentary voltage drops. > - No contact chattering for momentary voltage drops up to 50 % of > rated voltage. > - UL Class B construction standard. > - Wide-range AC activated coil that handles 100 to 120 VAC at either > 50 or 60 Hz. > - Miniature hinge for maximum switching capacity, particularly for > inductive loads. > - Flame resistant materials (UL94V-0 qualifying) used for all > insulation material. > - Quick-connect, screw and PCB terminals available. > - Standard models are UL, CSA and TUV approved; VDE versions are now > available. > - Conforming to IEC 950. > Is the relay acceptable for the device? > 6. At the Omron relay, there is a 12-volt DC coil used to switch line > voltage. Should the wires that are close be double insulated(with > tubing)? There is also a diode across the low voltage coil. Should its > leads be double insulated? How should this be done? > 7. Is it acceptable to use brown wires and blue wires on the 48 VAC > transformer secondary ? If not, what colors are acceptable? > 8. None of the hook up wires or cables have European recognition-they > have UL/CSA. Is that okay or do we need European-approved cables? Can > anyone recommend a vendor for these ? > 9. Must all metal parts of the frame and body be firmly connected i.e. > grounded, even if there are no electrical wires near them? For > example, must the front and rear actuator guards be earth grounded? ( > Changing from the rubber-backed washer to a normal flat should take > care of this if it is needed.) Should this function be checked on each > production unit ? What, if anything, must be tested and documented on > each and every production unit? > > Any help that members of the group can give will be highly > appeciated. > > Fowell Whitfield > Safety Engineer > Rhein Tech Labs > > > > > ---------------End of Original Message----------------- -------------------------- Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 619-505-2780 List-Post: emc-pstc@listserv.ieee.org Date: 03/01/1999 Time: 15:43:32 -------------------------- --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
