Edmonton:

• Go to the FTP site at IEEE
• To access follow these step PRECISELY.
• FTP to STDSBBS.IEEE.ORG
• login: anonymous
• password: rlm4012@newmail.dukepower.com (use your email)
• cd private
• quote site group p1346
• quote site gpass 1346PW
• cd p1346
• dir (you will find several files here including draft2 (1346_2.doc) and 1346mail.doc mailing list. Draft3(1346_3.doc) available AFTER 4/8/96)
• BIN
• Get 1346_3.doc (will transfer the doc to your local working directory.)
• Quit (to get out of the ftp site)

If you have trouble getting the file call Walter Pienciak at IEEE 1-908-562-3805

Comments were Directed to content and content philosophy with directions to Email the CHAIR editorial, grammatical, etc comments. Comments on Draft 3 to be in to the CHAIRMAN no later that JUNE 15th 1996.

Draft 4 to be out prior to the fall IAS meeting were the final copy prior to balloting will be reviewed..

Changes hereforth are referred to from the draft 3.0 with clause and subparagraph nomenclature..

4.2 table 1 "perhaps put in terms of How many $ would have to be saved to justify the additional capital dollars...would give a feel for ridethrough $ available during new purchase..

4.2 noted that appendix for O&M exist but no appendix for Capital

4.4.6 Mark McGrannahan to supply harmonics "preferred" statement

4.4.7 Dave Vanhoy to supply statement on Wiring and grounding from the emerald book point of view .. no independent grounding etc..

A4 Add statement on environmental, contract fines

Add "seconds pricing" to scrap and rework

B3 P5 remove as it sets suggested values for disruption..

B3 P6 remove as it is covered in list as it makes judgment

reference to p1100 is in purchase list..

c.2 Add statement point on wave of incident and recover..

Equipment is to be tested to determine worst case point on wave for both the beginning and recovery of sag. these phase angles are then to be used when doing ridethrough computability specification results ...Test from 0-180 degrees in 15 degree increments...

Add Statement : Equipment magnitude differential between phases of 110% to 0% to be included in ridethrough testing..

C5

Add statement list of "other affecting factors.."

Point on wave of sag initiation and recovery (ex: sag occurs at 90* electrical and recovers at 120* electrical)

Loading torque and speed ( ex:full vs 1/2 )

Type of load (ex:high inertia vs friction load)

1 phase 2 phase 3 phase ( number of phases simultaneously

sagged)

Type a,b,c,d faults (see Math Bollen's paper)

Magnitude imbalance (ex:120% on A;0% on B phase )

Multiple Events ( ex: two sags in rapid succession )

D.2 fig1 Label the starter and the PLC

ITIC(cbema) curve vs an example of a PLC and a starter

D.3 fig2 Sag voltage source should be of the same impedance as the presag source to allow the same energy transfer per voltage change.

D.3 pp3 ... Phase angle control for sag testing power electronic supplies may not be necessary; however it is very critical for magnetic devices such as relays and contactors.

Delete recommendation for simple line zero cross source etc...

D4 pp1 Add ..such as raising the distribution transformer tap setting to changing jumpers on control boards....

D4 pp4 ... verify the proper coordination of the supply and component voltage ratings from the service entrance to the distributed power supplies on electronic control boards..

D5 fig4 add box around control and show additional drawing with no dc link inductor and precharge resistor ..

Add statement...precharge resistors or dc links or both are used to limit inrush to the dclink capacitors during startup ...during normal operation the precharge circuit is shorted to give optimum responsiveness to the drive; but also is NOT available to limit the inrush current during sag recovery possibly causing overcurrent trips..

For the three sections....use the same term PRE-EVENT VOLTAGE

• When..1-10 cycles prior to the event
• Where.. service entrance, power distribution bus , control board...(van... don't remember where this part came from)

D5 relay fig... remove the DC relay from graph or indicate that because It is dc powered from a switchmode the phase angle does not matter.. ridethrough is dependent on the DC power supply system

D5 For all three figures...Indicate model a,b,c, etc instead of best and worst case... Purpose is to indicate that all are not equal. Not to give a best/worst design criteria..

Add section on the importance of testing the whole system as shown on Mock control testing... (Van...I will supply this section..)