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API Ballot Comments and Resolution (Rearranged by negative/non negative; technical/editorial)

Ballot: API 546 Draft Review Proposal: Ballot ID: 1096

Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)

Clause No./Subclause No./Annex(e.g. 3.1)

Type of Comment

Comment (justification for change) by the Voting Member Proposed change by the Voting Member

Comment Resolution

Royce King

ConocoPhillips

(Negative)

2.1.2 Technical The word "rodents" is used in this paragraph to cover some of the nuisances that affect motors in their installation sites. Per the definition of rodent, it is a mammal (mouse or rat) with large incisor teeth. There are other nuisances that exist besides rodents, such as snakes and birds and such. In some parts of the world other pests may exist. The word rodent is too specific.

Suggest that the word "rodents" be changed to "varmits" which per the dictionary is "a bird or animal regarded as undesirable or troublesome".

2.1.2 change to “animals”

Royce King

ConocoPhillips

(Negative)

2.4.2.1 Technical How does this paragraph relate to anti-friction bearings which the document allows? The paragraph as written appears to relate only to those bearings having an oil film (.....with the rotor installed and rotating on its oil film,.....). The document allows antifriction bearings (Para 2.4.6.2.2 and other places). It is not clear how this would apply to machines having antifriction type bearings.

If Paragraph 2.4.2.1 is not applicable for machines with antifriction bearings, add a statement indicating that is the situation. If this paragraph is applicable for machines with antifriction bearings, the paragraph should be reworded to include them.

“on its oil film” removed

Royce King

ConocoPhillips

(Negative)

3.2.1.1 and 3.3.1

Technical Not all RTDs are created equal...not even 100 ohm RTDs. There are different 100 ohm RTD characteristics with differing alpha numbers. Therefore stating that the RTDs should be 100 ohms at 32 degree F is not fully definitive. The alpha characteristic should be defined as well. Within our company the most commonly used 100 ohm RTD is that having an alpha characteristic of 0.00385 ohm/ohm/Deg C.

The document should include the most universally used alpha number as the default in these paragraphs "unless an alternate is specified", with space allowed on the data sheet to include an alternate alpha number for those wishing to use their internal company standard.

Alternate alpha values to be addressed in the DS guide. More space on data sheet for “Type”.

Royce King

ConocoPhillips

(Negative)

3.2.1.2 and Appendix D

Technical In the discussion in the base document in 3.2.1.2 as well as in the Appendix D for the data sheet Page 4, line 16, the basis for stator RTDs as discussed is for "two per phase." However, the spec and Appendix D to not discuss the desire to have "two per phase" working RTDs over the life of the machine, including an allowance for a manufacturing problem where one or more may not be working after manufacturing and stator VPI, or later in the machine's life in the field. Also on particularly large slow speed machines, we

The spec should indicate that some users may wish to increase the number of installed RTDs so that they are guaranteed that they will have 2 per phase working when the machine ships to the field and also have an allowance for an alternate later in the machine's life. The Appendix should be modified to discuss

Changed to 3 per phase, and DS line allows for more.

page 1 of 42API electronic balloting template/version April 2003



Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

often will specify additional RTDs to be installed to get better coverage around the circumference of the stator so that we can find those RTDs that are most reflective of the hot spots of the stator.

both the option to specify more than two per phase in order to ensure that they will have that many working when shipped, plus discuss the potential need to have additional RTDs on large diameter machines. The spec should be changed to add the following to the end of the paragraph 3.2.1.2 "When specified on the data sheet, additional RTDs per phase may be required to provide for spare detectors to cover manufacturing defects, future failures in the field during the life of the machine, or other needs of the owner." The data sheet should be modified to reflect this change as well.

Royce King

ConocoPhillips

(Negative)

Section 4.3.1.9

Technical Test stand lube oil systems can sometimes get fouled, depending on the diligence of the factory to clean and service them, or to service them following a previous machine on test that had a bearing failure. I have had bearings damaged during test by a dirty lube oil system, even equipped with filters.

The paragraph should include the following language. "Where the vendor's shop lube system is to be utilized, the vendor shall demonstrate to the purchaser or his representative that the lube system is clean and free of contaminants."

Filtration level clarified.

Cleanliness sentence clarified.

Royce King

ConocoPhillips

(Negative)

4.3.2.1.i Technical The specification defines that the bearings (assuming they are hydrodynamic and not antifriction) shall be inspected following all run tests. It defines that the contact between the shaft journal and the bearing bore shall be a minimum of 80 percent, etc etc. However, the document does not state what to do if the contact is less than 80 percent, or exhibits edge loading or is not symmetrical. It is normal within the petrochemical industry to require the bearings to be scraped and worked until the 80 percent "contact" is achieved, and

The document needs to define the remediation process that should be taken when the machine does not meet the requirements set forth in this paragraph.

Design and manufacturing procedures are the responsibility of the manufacturer. Remediation steps are then not included in this document.

Spherically seated added to 2.4.7.1.1




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

then to require the machine to be re-assembled and retested. I do not find these requirements in the document.

Repeat test is noted in 4.3.1.12

Paul Hamer

Chevron Corporation

(Negative)

See attachment

Technical I will be submitting a Word document with my comments by e-mail later today. My negative vote is only associated with the comments on Section 4.

See the Word document.

Paul Hamer Figure 4.1 and 4.3.3.10 Comments (These are the only “negative” ballot comments)

Figure 4.1 and 4.3.3.10 – There is a subtle change proposed for the vibration limits. At 3600 rpm, the shaft vibration limit in the 2nd Edition is 2.0 mils unfiltered and 1.6 mils filtered at one-times running speed frequency. The 2.0 mil unfiltered limit (including shaft runout) was also the shaft vibration limit for the 1st Edition of the standard (1990). With the proposed 3rd Edition draft, the above limits are changed to 1.83 (1.8) mils unfiltered and 1.46 (1.5) mils filtered at one-times running speed frequency for a 3600 rpm machine. In fact, the unfiltered shaft vibration limits for all rated speeds above 3000 rpm are 90% of the 2nd Edition limits, as represented in the curve of Figure 1. There are many turbo-generator units that Chevron has purchased (from manufacturers not presently represented on the Task Group) to the 1st and 2nd Edition limits that are operating satisfactorily in service. Some of these generators may not have passed the proposed 3rd Edition vibration limits. What is the justification for this more stringent requirement? Consider that the API 546 limits

My recommendation is to retain the shaft vibrations limits as in the 2nd Edition and change 4.3.3.10.1 to read: “The unfiltered vibration limits for machines up to 3000 3600 RPM rated speed shall not exceed 2.0 mils p-p displacement. For machines with rated speeds in excess of 3000 3600 rpm, the unfiltered vibration limit shall not exceed: …” Figure 4.1 will require a curve step-change at 3600+ rpm from 2.0 mils to 1.8 mils if the plot is continued using the equation

from > 3600 to

10000 rpm. To be consistent with the 2nd Edition limits as represented on the curve of Figure 1 (page 30 of the 2nd Edition), a 1.1 multiplier would need to be applied to

Issue discussed extensively and consensus of the work group is to keep the formula and figure consistent (ie: 2 mils @ 3000 rpm)

Adopted suggestion to make figures more readable.




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

are already two-thirds (or less) of the ISO limits for generators with ratings of greater than 50 MW (see information given below). My concern is that some two-pole machines could be rejected for no good reason.

Note that the Figure 1 curve is, at present, incorrectly shown in the 2nd Edition, if reference is made to Note 1 of the Figure (unfortunately, there’s also a typo in the equation of the Note in my copy of the standard). As I recall when the curve was created for the 1st and 2nd Editions, the unfiltered limit curve developed for Figure 1 was actually 110% of A for speeds of 3600 through 10000 rpm [see the above equation for A], up to where it intersected the 2.0 mil “constant” limit for speeds of 3600 rpm and below. Perhaps this should be considered, if a curve discontinuity at 3600+ rpm is of concern to the Task Group.

Refer to the following ISO standards, which have more liberal vibration limits than the present API 546, 2nd Edition:

ISO 10816-2, Mechanical vibration Evaluation of machine vibration by measurements on non-rotating parts Part 2: Land-based steam turbines and generators in excess of 50 MW with normal operating speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min-Second Edition; and Corrigendum 1:08/01/2004.

ISO 7919-2, Mechanical Vibration - Evaluation of Machine Vibration by

Equations (7) and (8) of the proposed Section 4.3.3.10.1.

The curve and limits would also be more clearly represented if there were 0.1 mil log scale calibrations between 1.0 and 2.0 mils – perhaps truncate the curve’s vertical scale below 0.5 mils and above 3 mils to permit this. I additionally suggest that the filtered (one-times running speed) vibration limits also be shown as a curve on Figure 4.1.

(Optional comment follows in this paragraph) Should the curves of Figure 1 be terminated at 7500 or 8000 rpm, instead of 10000 rpm, since this is the practical upper limit for synchronous rotors that have windings? Permanent-magnet or reluctance type rotors do not appear to be in the scope of API 546 (although they are not specifically excluded), and these types of rotors may not have the same speed




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

Measurements on Rotating Shafts - Part 2: Land-Based Steam Turbines and Generators in Excess of 50 MW with Normal Operating Speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min-Second Edition.

For the Task Group’s information: The unfiltered shaft relative displacement limits for a “new machine” are 75 microns (2.95 mils), 80 microns (3.15 mils), 90 microns (3.54 mils) and 100 microns (3.94 mils) for 3600, 3000, 1800, and 1500 rpm, respectively, in ISO 7919-2. The bearing housing/pedestal limits per ISO 10816-2 for a “new” machine are 3.8 mm/s (rms) for 3000 and 3600 rpm and 2.8 mm/s (rms) for 1500 and 1800 rpm.

limitation as the conventional type of synchronous rotor.

I request that the above comments be considered in the context of two-pole machines where API 546 may be applied between the ratings of approximately 10 and 150 MVA.

Royce King

ConocoPhillips

(Negative)

6.6.3 Technical It is important to know what bearings and seals are installed in the machine. This is important to know when installing the motor on site as well as in the future when planning maintenance or having to work on the machine. If there is a failure of the bearings or seals these documents can be very valuable in getting new bearings, particularly if some time has passed between when the machine is installed and the bearings or seals fail. In some cases the OEM may no longer be in business.

Somewhere in Section 6.6.3, add the following: "The drawings should include detail drawings of the bearings and the shaft seals. The drawings should also include information on the make and manufacturer's catalog number of the bearings and seals where applicable."

Inserted as “.e”

Royce King

ConocoPhillips

(Negative)

6.8.3 and 6.8.4

Technical Information on the machine bearings and shaft seals in very important to have in the installation manual and the operation and maintenance manual. Some bearings, such as the spherical seat bearings made by several manufacturers, are very complex and have special detailed instruction manuals for the care and feeding of these bearing systems. Included in these

The following are proposed.

6.8.3 Last sentence "It shall contain information such as special alignment procedures, specific bearing and shaft seal

Added




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

instructions should be information on things like bearing "crush" that is required.

installation considerations, utility specifications (including quantity), and all installation design data."

"6.8.4.c Detailed instructions, including pictures and sketches, outlining the appropriate methods for disassembly, inspection, re-assembly and maintenance of the machine's bearings and shaft seals."

added

Royce King

ConocoPhillips

(Negative)

Data Sheet, Sync Motors, Page 3, Bearings

Technical Many machines have spherical seat bearings and there is no place to indicate this type of bearing.

Add a selection for spherical seat bearings.

Added to 2.4.7.1.1

COMMENTS ABOVE ARE ASSOCIATED WITH NEGATIVE BALLOTSCOMMENTS BELOW ARE NOT ASSOCIATED WITH NEGATIVE BALLOTS

Lorraine Padden

Padden Engineering, LLC

(Affirmative)

1.3.2 Technical Last sentence & note should be combined.

1.3.2 This document recognizes two different systems of standards for the manufacturing and testing of electrical machines: American National Standards Institute (ANSI), Institute of Electrical and Electronics Engineers (IEEE), and National Electrical Manufacturers Association (NEMA); or International Electrotechnical Commission (IEC) and International Organization for Standardization (ISO). The North American standards are the base documents. When

The North American standards are the base documents. When specified by the purchaser, the corresponding international standards are acceptable for use as alternatives; however, the purchaser should be aware that specific requirements contained within corresponding standards may differ.

Paragraph kept as written.




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

specified by the purchaser, the corresponding international standards are acceptable for use as alternatives; however, this must not be construed that they are identical to the North American standards.

NOTE: The purchaser should be aware that specific requirements contained within corresponding standards may differ.

Louis Barrios

Shell Global Solutions (US) Inc.

(Affirmative)

1.5.9 Technical The second sentence on "Rated Power Factor", which was added in this revision cycle, does not add clarity and may confuse readers of the standard.

Delete second sentence. Deleted

Royce King

ConocoPhillips

(Negative)

1.6 Technical (This comment is not a basis for the negative ballot) The statement (To be re-examined after 546 document is finished.) should be removed.

This appeared to be an editorial comment during development and should be removed.

Highlighted in yellow for action in the proof stage.

Paul Hamer 1.61.6 – Need to add the following references:

IEEE Std C37.010-1999, IEEE Application Guide for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis

IEEE Std C50.12™-2005, IEEE Standard for Salient-Pole 50 Hz and 60 Hz Synchronous Generators and Generator/Motors for Hydraulic Turbine Applications Rated 5 MVA and Above

50.010 added

50.12 Subject to review

50.13 added




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

IEEE Std C50.13™-2005, IEEE Standard for Cylindrical-Rotor 50 Hz and 60 Hz Synchronous Generators Rated 10 MVA and Above

The last two standards should be reviewed to include any relevant references. NEMA MG 1 (2006) requirements are exclusive of the requirements for the types of machines covered by the two C50 standards.

Royce King

ConocoPhillips

(Negative)

2.1.8 and others

Technical (This comment is not a basis for the negative ballot.) At the end of the first sentence in this paragraph there is an extra period. Throught the document there are punctuation errors.

Run spell check and other editor features to pick up the errors.

Period removed

Lorraine Padden


(Affirmative)

2.1.8 Technical Clarify maximum exposed surface temperture to align with recommendations in IEEE 1349 and recognize AIT.

2.1.8 The machine and all of its auxiliary devices shall be suitable for the area classification specified by the purchaser on the data sheets. .Auxiliary devices shall be listed or certified where required in accordance with the area classification system specified, i.e. NFPA 70, Articles 500, 501, 502 and 505 (Class, Group, Division or Zone, and Temperature Code), or IEC 60079-10 (Zone, Class, Group, and Temperature Code) and specified local codes. (See IEEE 1349 and IEEE 303 for additional guidance and information on application of motors and accessories in Class I, Division 2 locations.)

2.1.8 The machine and all of its auxiliary devices shall be suitable for the area classification AND AIT specified by the purchaser on the data sheets. THE MACHINE SHALL HAVE AN EXPOSED SURFACE TEMPERATURE LESS THAN THE AIT OR NOT EXCEEDING 200C FOR NORMAL OPERATING CONDITIONS AT NAMEPLATE RATINGS, WHICHEVER IS LOWER. Auxiliary devices shall be listed or certified where required in accordance with the area classification system specified, i.e. NFPA 70, Articles 500, 501, 502 and 505 (Class, Group,

Kept as written

Existing references to 1349 and 303 are sufficient




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

Division or Zone, and Temperature Code), or IEC 60079-10 (Zone, Class, Group, and Temperature Code) and specified local codes. (See IEEE 1349 and IEEE 303 for additional guidance and information on application of motors and accessories in Class I, Division 2 locations.)

Jim Kay

GE Canada Large Motors

(Affirmative)

2.1.8 Technical IEC 60079-14 should be referenced as it specifies the type of equipment required and provides installation rules.

Add “and 14” after “IEC 60079-10”.

Accepted as generic 60079

Louis Barrios


(Affirmative)

2.1.9 Technical Section 2.1.9 appears to be redundant. 2.1.9 refers back to section 2.1.8 for motors supplied by an ASD, even though section 2.1.8 already applies to all machines specified by the standard.

Delete section 2.1.9. deleted

Louis Barrios


(Affirmative)

2.1.11 Technical The phrase "permit rapid and economical maintenance and inspection" is somewhat vague. This is legacy text from previous editions. There are many aspects of the motor that are not rapid to inspect (ex. rotor bar integrity). Unfortunately, I don't have any suggestions to improve the current wording.

Sentence re-written

Victor Minak

ExxonMobil Research & Engineering

(Affirmative)

2.2.2 Stator Insulation

Technical Add:

The insulation system shall contain no visible voids.

Added in 2.3.1.1

Jim Kay 2.2.4.1 Technical “80% voltage” does not appear to allow for voltage Modify the second half of the Paragraph maintained as




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution


(Affirmative)

recovery due to the inrush current reducing during acceleration. This is not a realistic condition and could result in added complexity in the rotor circuit, e.g., adding a starting resistor when not required.

clause to read “. . . running speed with and initial 20% voltage dip at motor terminals."

written

Jim Kay


(Affirmative)

2.2.4.3 Technical When specific starting details are known, a 10% accelerating torque margin should be maintained throughout the accelerating period – this may mean that the motor starting torques do not meet 2.2.6.1 b.

Modify note 1 to read “. . . provided in clauses 2.2.3.1, 2.2.4.1 and 2.2.6.1 b are not applicable.”

Sub-group established to examine. (Barry, Mark and Bill) Done. Added 2.2.4.4

Jim Kay


(Affirmative)

2.3.1.1 Technical This clause implies that the stator leads should be VPI’d – I do not believe this is the intent.

Move “including stator lead connections to the windings” to the second sentence after the word “system”.

Stator leads are attached, and held above the resin during the VPI process.

Remains as written.

Gabe D'Alleva


(NonVoter)

2.3.1.1 Technical Add requirement stator insulation should be void free. There is no other known standard that requires void free insulation. 4 KV windings may pass partial discharge, power factor tip up tests due to test voltage being below partial discharge inception

Revise second sentence to read. "The insulation system shall be 'void free' and capable of withstanding a sealed winding conformance test in accordance with NEMA MG 1 Part 20.

Adopted, see as written 2.3.1.1

Paul Hamer 2.3.1.1 2.3.1.1 – See the temperature limits in IEEE Stds C50.12 and C50.13. Are these consistent?

Paragraph allows use of applicable standard.

Paul Hamer 2.3.1.8 2.3.1.8 – IEEE 429-1994 was withdrawn. Is it active again?

Not active, but best reference available.

(IEEE P1776 is currently working to replace 429 and 275.)

No change.

Lorraine Padden

Padden

2.4.1.1.f Technical Reference IEEE 1349 and NFPA 496 f. When specified, machines to be installed in classified Div. 2 or Zone 2 areas

Reference IEEE 1349




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution

Engineering, LLC

(Affirmative) 2.4.1.1

f. When specified, machines to be installed in classified Div. 2 or Zone 2 areas shall be provided with provisions for effective pre-start purging as described on the datasheet.

shall be provided with provisions for effective pre-start purging as described on the datasheet. Reference IEEE 1349 and NFPA 496

W. Lockley

Lockley Engineering Ltd.

(Affirmative)

2.4.1.2.4 Technical Celsius figures don't convert correctly to Fahrenheit for temperature rises. 20 K is 36 F and 10 K is 18 F

Change equivalence to make 20 K to 36F and 10 K to 18 F

BL check TEMA Standards next week and propose change to group.

Royce King

ConocoPhillips

(Negative)

2.4.2.7.9 Technical (This comment is not a basis for the negative ballot.) Our company preference is for the jack bolts to be UNF threads so that the movement is more precise.

Change the jack bolt specification to UNC or UNF threads as specified and put a place on the data sheet for the user to make a selection.

Coarse is preferred by SOME. Both coarse and fine work, but when the bolts are lost, coarse bolts are more available.

Jim Kay


(Affirmative)

2.4.2.10 Technical Some manufacturers utilize an epoxy mounted dowel – this eliminates the need for on-site machining and fully meets the intent of this clause.

Add “The use of an epoxy mounted dowel arrangement is an acceptable alternative.” at the end of the second sentence.

“… space for field drilling and reaming (if required)….

Paul Hamer 2.4.5.1.2 b 2.4.5.1.2.b – Does this item even apply in the case of two-pole synchronous construction? I believe it does not and should be deleted.

Keep paragraph as written.

Paul Hamer 2.4.6.2.7.1 c

2.4.6.2.7.1.c – Phase to ground faults are almost never a consideration (due to resistance grounding of the neutral). Did the TF mean “…

Added in




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution

such as start-up of synchronous electric motors and generator phase-to-phase or phase-to-ground three-phase faults.”?

Jim Kay


(Affirmative)

2.4.6.2.6 c Technical What is a “coupling plane of flexure”? Need to review and provide a better description to clarify.

Removed “plane of flexure”

Royce King

ConocoPhillips

(Negative)

2.4.7.1.14 Technical (This comment is not a basis for the negative ballot)

There is not a lot of difference between bearings in pumps and bearings in motors. The API 546 document and the API 610 document are not consistent.

Consider making this paragraph consistent with API 610 10th ed. which states:

Sufficient cooling, including an allowance for fouling, shall be provided to maintain oil and bearing temperatures as follows, based on the specified operating conditions and an ambient temperature of 43 °C

(110 °F):

a) for pressurized systems, oil outlet temperature below 70 °C (160 °F) and bearing metal temperatures (if bearing-temperature sensors are supplied) less than 93 °C (200 °F). During shop testing, and under the most adverse specified operating conditions, the bearing-oil temperature rise shall not exceed 28 K

See the Comment section. Make API 546 and API 610 consistent on temperature.

No change to paragraph.




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution

(50 °R);

b) for ring-oiled or splash systems, oil sump temperature below 82 °C (180 °F). During shop testing, the sump oil temperature rise shall not exceed 40 K (70 °R) and (if bearing-temperature sensors are supplied) outer ring temperatures shall not exceed 93 °C (200 °F).

Lorraine Padden


(Affirmative)

2.4.8.5 Technical API documents should prohibit common lube oil systems of motors/generators with equipment that is handling flammable/combustible materials. The documented events in IEEE 1349 show the majority were directly related to problems with common lube oil systems introducing flammables into the motor housings and subsequently contributing to the events. In addition, there was a generator event with a similar problem which had been reported. Other unreported events have been mentioned which were directly attributed to common lube oil systems. In IEEE Std. 242-2001 (Buff Book), Chapter 10, Motor Protection,10.5.3.3.4 Fire detection and protection..."For fire detection and protection, the following items should be considered: (c) ... Lubricating systems of gas compressors or hydrocarbon pumps should be kept separate from the motor to preclude combustibles and flammables from entering the motor through the oil system."

This mode of failure with possible significant event should be prevented by API standards.

2.4.8.5 Where oil is supplied from a common

2.4.8.5 MOTOR AND GENERATOR COMMON LUBE OIL SYSTEMS ARE PROHIBITED WITH EQUIPMENT HANDLING FLAMMABLE OR COMBUSTIBLE MATERIALS. Where oil is supplied from a common system to two or more machines (such as a compressor, a gear, and a motor), the oil's characteristics will be specified on the data sheets by the purchaser on the basis of mutual agreement with all vendors supplying equipment served by the common oil system.

Note: The usual lubricant employed in a common oil system is a hydrocarbon oil that corresponds to ISO Grade 32, as specified in ISO 3448.

Partially adopted as Note 2.




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution

system to two or more machines (such as a compressor, a gear, and a motor), the oil's characteristics will be specified on the data sheets by the purchaser on the basis of mutual agreement with all vendors supplying equipment served by the common oil system.

Note: The usual lubricant employed in a common oil system is a hydrocarbon oil that corresponds to ISO Grade 32, as specified in ISO 3448.

Royce King

ConocoPhillips

(Negative)

2.4.8.6 Technical (This comment is not a basis for the negative ballot) There is a new industry standard, ISO 10438, that covers pressurized oil systems. The intent of the new document is to update and replace API Standard 614.

Change the reference in 2.4.8.6 from API 614 to ISO 10438.

included

Jim Kay


(Affirmative)

2.5.1.5 Technical Should this be an optional item? It is an option on the data sheet.

Add a bullet and “When specified” or delete the option on the data sheet.

Bulleted

Jim Kay


(Affirmative)

2.5.3.3 Technical A 48 hour burn-in of rotating electronic components will result in a substantial increase in cost and manufacture time of both complete motors and spare or replacement parts while providing a very limited increase in reliability.

Show as a “when specified”. adopted

Jim Kay


(Affirmative)

2.5.3.8 Technical Continuation of operation at rated output with an open circuit failure of a single diode should be considered to be a normal requirement. However continuation of operation with a short circuited failure of a single diode would require either the use of parallel diodes and rotating fuses or the use of series diodes with a substantial increase in the number of components. The complexity of the proposed assembly would result

Delete clause or add a note that discussions with the motor supplier should take place before selecting this option as it will have an adverse impact on reliability.

Clause deleted.




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution

in a decrease in the overall reliability compared to that which is provided by basic rotating diode bridge circuit assemblies with substantial margins between device ratings and actual operating parameters.

Jim Kay


(Affirmative)

2.5.3.9 Technical Added complexity required that will adversely impact reliability. Perhaps has merit on systems that utilize a rotor mounted synchronizing module.

Replace clause with the following “When specified, for motor excitation system designs that require the use of rotor mounted field application and control modules, the manufacture shall provide a test device and means to easily connect to all rotating electronic devices that will test and simulate the action of the rotating field application and control devices.”

Paragraph re-written to committee consensus

Jim Kay


(Affirmative)

2.5.3.12 Technical Reference to 2.5.2.2 is incorrect. Replace 2.5.2.2 with “2.2.5.2”. done

Jim Kay


(Affirmative)

2.5.3.12 Technical The resistor thermal capacity clause would lead to a significant size increase that would adversely impact rotor dynamics on 4 and 6 pole machines and add additional rotor- mounted components to slower speed motors.

Replace second to last sentence with “The resistor thermal capacity shall meet the starting capability requirements that are defined for repeated starts and margins in excess of expected acceleration times that are specified in sections 2.2.5.2 and 2.2.5.4.”

Adopted with modifications

Jim Kay


(Affirmative)

3.1.1 Technical Incorrect NEMA reference. “Part 20” should change to “Part 21”

done




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution

Jim Kay


(Affirmative)

3.1.4 Technical No reference in data sheet. Either delete the bullet or add additional field in data sheet.

Field added in DS

Louis Barrios


(Affirmative)

3.1.4 Technical Should "all vertical gasketed surfaces" change to "all horizontal gasketed surfaces". Unless I'm reading this incorrectly, I thought we were more concerned about moisture accumulating on a horizontal surface rather than a vertical surface.

Language clarified

Jim Kay


(Affirmative)

3.1.5 Technical Incorrect NEMA reference. I’m not sure which is the correct reference?!

Reference is correct

Lorraine Padden


(Affirmative)

Technical Align Space Heaters with IEEE 1349 recommendations 160C which is 80% of AIT recommendation of 200C. Also note 80% limit from NEC.

3.4.2 Space heaters shall be low power density, single or three phase, with a frequency and voltage as specified, with all energized parts covered. Low dissipation space heaters (surface temperature of the heating element shall not exceed 160oC [320o F]) shall be provided and completely wired using high temperature insulation lead material of types FEPB, NI, and SA. The wiring shall be brought out to a separate terminal box. The heaters shall be installed inside the enclosure in a location suitable for easy removal and replacement. Heaters shall be located and insulated so that they do not damage components or finish. Any type of heater that

3.4.2 Space heaters shall be low power density, single or three phase, with a frequency and voltage as specified, with all energized parts covered. Low dissipation space heaters (surface temperature of the heating element shall not exceed 80% OF THE AIT OR 160oC [320o F]WHICHEVER IS LOWER) shall be provided and completely wired using high temperature insulation lead material of types FEPB, NI, and SA. The wiring shall be brought out to a separate terminal box. The heaters shall be installed inside the enclosure in a location suitable for easy removal and

Revised to:

Unless otherwise specified, the surface temperature of the heating element shall not exceed 160oC (320o F).




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution

contacts the surface of the stator winding is not acceptable.

ƒÜ 3.4.3 Space heaters shall be arranged so that heat is radiated from both sides to provide uniform heating of the stator windings. The heaters shall maintain the temperature of the motor windings at approximately 9„aF (5„aC) above the ambient temperature. The surface temperature of the heater elements shall not be greater than 200„aC or the value listed on the datasheet.

replacement. Heaters shall be located and insulated so that they do not damage components or finish. Any type of heater that contacts the surface of the stator winding is not acceptable.

ƒÜ 3.4.3Space heaters shall

be arranged so that heat is radiated from both sides to provide uniform heating of the stator windings. The heaters shall maintain the temperature of the motor windings at approximately 9„aF (5„aC) above the ambient temperature. The surface temperature of the heater elements shall not be greater than 80% OF THE AIT OR 160oC [320o F]WHICHEVER IS LOWER or the value listed on the datasheet.

Jim Kay


(Affirmative)

3.4.2/3 Technical Two different surface temperatures are referenced in these paragraphs.

Delete section shown in parenthesis in clause 3.4.2.

Temperature removed in 3.4.3. See 3.4.2.

Jim Kay


(Affirmative)

3.6.2.3 Technical Maximum lead length looks to be too tight for a Type II box.

Delete the second half of the second sentence beyond the word “possible.”

No change




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

Jim Kay


(Affirmative)

3.6.4.2 Technical 6.9kV devices should be tested at 15kV. Add the word “above” in front of the first “6.9kV” in the second sentence. Add the word “or” between “at” and “less”.

Adopted

Jim Kay


(Affirmative)

3.9 Technical Add additional clause suggesting the use of liquid tight flexible metal conduit on machines shipped disassembled, i.e., not rigid conduit which makes assembly in the field more difficult.

Add “3.9.4 Liquid tight flexible metal conduit can be utilized without the limit shown in clause 3.9.2 on machines that are shipped disassembled.”

Not adopted

Gabe D'Alleva


(NonVoter)

4.3.1.4 Technical Terminal boxes should be attached to motor during factory testing. Rationale for this is: motor operates in field with terminal box attached; and factory testing without terminal box prevents the witnessed factory verification and testing of auxiliary devices mounted in/on terminal box at factory. When machine is commissioned failed auxiliary components found in field can not be replaced in time due to machine is in critical service and non-spared, and critical start up schedule. Thus potentially resulting in forced start up with nonfunctional terminal box equipment health monitoring components.

Revise second sentence to read. Terminal boxes may 'not' be excluded.

Deleted sentence.

Gabe D'Alleva


(NonVoter)

4.3.4.2.1 c) Technical Add sentance stating there shall be no visiable voids in cut sacrifical coil test segments.

Add second sentence to read " There shall be no visible voids in the cut segments."

Adopted

Paul Hamer New item (not part of the negative ballot). Suggest addition after 4.3.5.2, use 4.3.5.3, and re-number subsequent paragraphs as required (or locate in other appropriate place):

4.3.5.3 Heat Exchanger Performance Verification Test

When specified for

Adopted




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


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Comment Resolution

machines with TEWAC heat exchangers, the performance of the heat exchanger shall be demonstrated. The test shall be conducted during a heat run of at least four hours with the cooling water flow and temperature maintained as close as practical to rated conditions while the machine is operating as close as practical to rated voltage, current, and frequency. During this test, all pertinent mechanical, electrical, temperature, and flow rate data shall be recorded. The heat exchanger air outlet temperature shall not exceed the specified value, usually 40 degrees C. If the heat exchanger test at rated conditions is not possible due to either the machine




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

size or the test facility capabilities, the vendor and purchaser shall jointly develop a test method to satisfactorily demonstrate the heat exchanger performance. Note: If a complete test is specified, this heat exchanger test may be performed in conjunction with the heat run required as part of the complete test.

An addition is also required on the Data Sheets for this item

Lorraine Padden


(Affirmative)

4.3.5.5 ADD

Technical 4.3.5.5 ADD....

EXPOSDED SURFACE TEMPERATURE TEST

4.3.5.5 ADD....

EXPOSDED SURFACE TEMPERATURE TEST

When specified for motors installed in classified areas, the exposed surface temperture test shall be performed as mutually agreed upon by the user and manufacturer. Reference IEEE 1349 for guidance.

Not adopted

Royce King 4.3.3.10.1 Technical (This comment is not a basis for the negative ballot.) Change API 546 requirements in Not adopted




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

ConocoPhillips

(Negative)

thru 4.3.3.10.5

The API 546 requirements for vibration are not consistent with the API 610 10th edition. The two documents should be consistent.

this area to agree with the API 610 10th edition requirements.

Paul Hamer 6.2.2.2 For generators:a. Short circuit currents vs. time for three phase, line to line and line to ground fault conditions.

Is the line-to-ground fault really necessary? Generators are almost always resistance or impedance grounded. Motors are always ungrounded.

Also, propose to add to Section 6.2.2, for both motors and generators:

6.2.2.2.3 For both motors and generators: Information shall be supplied to facilitate a preliminary power system short-circuit analysis by the user. The required machine parameters include Xdv″ (rated voltage subtransient reactance), X2v (rated voltage negative-sequence reactance), Ta3 (rated voltage armature time constant (seconds)), rated MVA, and rated terminal voltage.

Note: IEEE Std C37.010, Table 8, footnote “a,” describes the use of the above information to determine the effective resistance to be used for the X/R of the machine during short circuit calculations.

Keep line to ground in.

Adopted




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

(Blanks for this information may need to be included on the Data Sheet as “□” proposal items)

Lorraine Padden


(Affirmative)

Data sheets - page 1

Technical Data sheets page 1

for rotor and stator temperature rises, add references to 2.1.8, 2.1.9

Add not to exceed 200C

Data sheets page 1

for rotor and stator temperature rises, add references to 2.1.8, 2.1.9

Add not to exceed 200C

Not adopted

Lorraine Padden


(Affirmative)

Data sheet s- page 3

Technical Data sheet page 3

Lubrication - For common with Driven Equipment

add reference 2.4.8.4 and 2.4.8.5

Partially Adopted

Lorraine Padden


(Affirmative)

Data sheets - page 8

Technical Special Seals for Gas Purge

add reference 2.4.1.1.f

Not adopted. 2.4.7.3 covers

Lorraine Padden


(Affirmative)

Data Sheets - page 11

Technical Add: Exposed Surface Temperature Test

reference 4.3.5.5

Not adopted

Lorraine Padden


(Affirmative)

Appendix E, Line 14-15

Technical Line 14 - 15 -- "Stator Temperature Rise" and "Rotor Temperature Rise" -

Add restrictions for classified areas to align with IEEE 1349 and include the reference.

Line 14 - 15 -- "Stator Temperature Rise" and "Rotor Temperature Rise" -

Add: For classified areas, the maximum exposed surface temperture shall not exceed the AIT or 200C, whichever is less.

Not adopted




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

For guidance refer to IEEE 1349.

Paul Hamer Data sheets Comments on Appendices A and B

Why are some of the blank bullets pre-completed? If other selections are made during the machine specification, this will create confusion. Items that are specified in the standard’s text as a normal (not a “when specified” item) requirement should not be repeated on the Data Sheets. A comprehensive proofread should be made of all paragraph numbers corresponding to bulleted items in the text and within the Data Sheet Guides (Appendices D and E).

Line 11 of the motor customary units data sheet (same comment applies to the other data sheets): Shop Inspection (4.1.1) - There appears to be no need for this data sheet item since it always applies in some form. Suggest delete this item and the bullet on Section 4.1.1.

Comments on Appendix C

Recommend adding a new category B.6 for “motors and generators:”

a. Reactances and time constants necessary for short circuit and stability analysis. (normally for Review and Final)

Adding to top of each page of Data Sheet: “Bold indicates typical selection”, and also remove solid bullets. BL to put some words in the Guides to emphasize this.

Adopted, 4.1.1 revised

Adopted




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution

b. Information to facilitate a preliminary power system short-circuit analysis .(normally for Proposal).

The data sheet is the best place for the specifics.

Paul Hamer Comments on Appendix D

Global: The newest NFPA 497, issued in 2004, deleted the “M” suffix. (NFPA 497-2004, Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas); locations where GD2/WK2 appear need to be looked at and changed to GD2/WK2

Check the NFPA document for addition of more materials. As a starting point, use this:

(Also see complete lista t bottonm of this document)

Adopted

Bill Lockley will update




Date: May 8, 2023

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Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

Paul Hamer Appendix D Page 18, Line 10 – “Fault Withstand is now a requirement. Should it be listed as a choice?

Adopted as a requirement and deleted from DS and DS guide

Paul Hamer Appendix E Comments on Appendix E

Global: Locations where GD2/WK2 appear need to be looked at and changed to GD2/WK2

Page 12, Lines 22 and 24. Self-balancing schemes can be used on the smaller ratings, particularly small GT units that may be connected to a 13.8 kV bus. I would leave it as a choice.

Page 14, Line 33 – “Fault Withstand” is now a requirement. Should it be listed as a choice?

Pages 14-15, Lines 3, 4, 5: “Temperature code” See comments on NFPA 497, above.

Done

Agreed

Now mandatory, choice removed

Bill Lockley to update

Lorraine Padden


(Affirmative)

Appendix E, Line 19-20

Technical Show Class, Zone, Group...in this order....

Line 18 - 19 --Area Classification "Class__, Division__, Group__, or Zone___, Class___, Group___ or Nonclassified"

Line 18 - 19 --Area Classification "Class__, Division__, Group__, or Class___, Zone___, Group___ or Nonclassified"

Not adopted

Lorraine Padden


(Affirmative)

Appendix E Technical Change 250C to 200C to align with IEEE 1349 guide. Update reference NFPA 497 and this list is not "complete".

Line 19 -- "Autoignition Temperature " - If nothing is

Line 19 -- "Autoignition Temperature " - If nothing is entered, >200°C is assumed for any ignitable vapors or gases that may exist around the motor while it is in service. Some

Changed to 200




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

entered, 250°C is assumed for any ignitable vapors or gases that may exist around the motor while it is in service. Some liquids have ignition temperatures lower than 250°C, and must be listed here. See the current edition of NFPA 497M for a complete listing of these liquids.

liquids have ignition temperatures 200°C OR LOWER, and must be listed here. See the current edition of NFPA 497 for a listing of these liquids.

Lorraine Padden


(Affirmative)

Appendix E Technical Use the term classified and reference IEEE 1349 and NFPA 496.

Line 12 – “Provision for Pre-Start Purging” Specify this for hazardous locations if it is desired to replace all the possibly explosive atmosphere with air from a non hazardous location before starting.

Line 12 – “Provision for Pre-Start Purging” Specify this for CLASSIFIED (hazardous) locations if it is desired to replace all the possibly explosive atmosphere with air from a non hazardous location before starting. REFER TO IEEE 1349 AND NFPA 496 FOR GUIDANCE.

Lorraine Padden


(Affirmative)

Appendix E Technical API should prohibit common lube oil system with equipment handling flammable/combustible materials because of the documented events noted in IEEE 1349 and other industry reports. See also IEEE 242-2001 Buff Book, Chapter 10.

Line 19-- "System Supplied By, Common with Driven Equipment” - When the driven-equipment has a pressurized-lubrication system, the motor typically is fed from the same system, although shared systems pose a risk of gasses from the driven equipment entering the motor through the lube system. This space is for selecting such a system, designating its supplier, the lubricating oil type, quantity of oil, and the supply pressure. An oil system is typically supplied by the driven-equipment supplier.

Line 19-- "System Supplied By, Common with Driven Equipment” - MOTOR/GENERATOR COMMON LUBE OIL SYSTEMS ARE PROHIBITED WITH EQUIPMENT HANDLING FLAMMABLE OR COMBUSTIBLE MATERIALS. When the driven-equipment has a pressurized-lubrication system, the motor typically is fed from the same system, although shared systems pose a risk of gasses from the driven equipment entering the motor through the lube system. This space is for selecting such a system, designating its supplier, the lubricating oil type, quantity of oil, and the supply pressure. An oil system is typically supplied by

Not adopted. BL to add cautionary note from the base document into the motor & generator DS guides.




Date: May 8, 2023

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Comment Resolution

the driven-equipment supplier. REFER TO IEEE 1349 AND IEEE 242-2001 CHAPTER 10.

Lorraine Padden


(Affirmative)

Appendix E Technical Per NFPA 70, NEC, space heaters are limited to 80% of the AIT. Refer to recommendations in IEEE 1349, limit space heater temperature not to exceed 160C. Update reference to NFPA 497. Update list as per the text to less than 200C.

Line 40: “Temperature code” – This is defined as the maximum temperature permitted at the surface of the heater element, which could be a source of ignition in an explosive atmosphere. For Class I (gas or vapor) Group A, B, C or D locations, specify the Code for the lesser of 200C or 80% of the autoignition temperature from NFPA 497M for the specified gas or vapor involved. The chart below is taken from NFPA 497M and lists liquids with an AIT less than 200 C.

Line 40: “Temperature code” – This is defined as the maximum temperature permitted at the surface of the heater element, which could be a source of ignition in an explosive atmosphere. For Class I (gas or vapor) Group A, B, C or D locations, specify the Code for the lesser of 160C or 80% of the autoignition temperature from NFPA 497 for the specified gas or vapor involved. The chart below is taken from NFPA 497 and lists liquids with an AIT less than 200 C.

Update list to less than 200C

160 C adopted

497 correction done from PH comment

Lorraine Padden


(Affirmative)

Appendix E Technical Align the maximum space heater temperature with 200C AIT, which is 160C Space heater, reference IEEE 1349. Update reference NFPA 497.

Line 13: “Frame space heaters” – All motors should include space heaters. Normally, the "manufacturer's standard" bar type heater sheath material is acceptable, but stainless steel or other material could be specified. Flexible belt type space heaters should be avoided, and any type of heater that contacts the surface of the motor winding is not acceptable. Specify 120- or 240-volt, single-phase or 208- or 480-volt, three-phase power, depending on what power source

Line 13: “Frame space heaters” – All motors should include space heaters. Normally, the "manufacturer's standard" bar type heater sheath material is acceptable, but stainless steel or other material could be specified. Flexible belt type space heaters should be avoided, and any type of heater that contacts the surface of the motor winding is not acceptable. Specify 120- or 240-volt, single-phase or 208- or 480-volt, three-phase power,

Done from previous changes

1349 reference not adopted




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

would be available with the motor shut down. Temperature Code is defined by the maximum temperature permitted at the surface of the heater element, which could be a source of ignition in an explosive atmosphere if the element is too hot. For Class I (gas or vapor) Group A, B, C or D locations, specify the Code for the lesser of 200C or 80% of the autoignition temperature from NFPA 497M for the specified gas or vapor involved.

depending on what power source would be available with the motor shut down. Temperature Code is defined by the maximum temperature permitted at the surface of the heater element, which could be a source of ignition in an explosive atmosphere if the element is too hot. For Class I (gas or vapor) Group A, B, C or D locations, specify the Code for the lesser of 160C or 80% of the autoignition temperature from NFPA 497 for the specified gas or vapor involved. Refer to IEEE 1349 for guidance.

Lorraine Padden


(Affirmative)

Appendix E Technical Add: Exposed Surface Temperature Test...4.3.5.5 and reference IEEE 1349

Line 25: “Other”—Examples of other analysis, inspection, or tests that might be specified are as follows:

Line 25: “Other”—Examples of other analysis, inspection, or tests that might be specified are as follows:

Motor/Generator Exposed surface temperture tests may be requested for motors installed in classified locations. This tests may be considered when the AIT is low, particularly less than 200C, and/or the normal operating temperature of the motor at rated conditions may approach the AIT. Refer to IEEE 1349 for various test options and information.

Not adopted

Paul Hamer Comments on Appendix F Agreed, latest version




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

Assume that this is a duplicate from the S/C on Mechanical Equipment.

needed for verification

Paul Hamer Comments on Appendix G

There appears to be a typo on Figures G1 and G3 hot vibration vector (annotations).

done

Paul Hamer Comments on Appendix H

Is Rev 22 of the standard paragraphs the latest? Change the wording to reference the API 546 paragraphs (in 4.3.5.3), and not API 541.

COMMENTS BELOW ARE EDITORIAL

Louis Barrios


(Affirmative)

Entire Document

Editorial The use of english units and metric units is not consistent throughout the document. For example, in 2.4.2.7.1.a, english appears before metric and then metric units appear before english.

adopted

Louis Barrios


(Affirmative)

1.1 Editorial Should the standard specify an upper limit (or maximum size) for generators that the standard applies to?

Limit not established

W. Lockley


1.1.3 Editorial 1.1.3 is a repeat of 1.1.2 Delete 1.1.3 They are different. And 1.1.3 kept.




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

(Affirmative)

Louis Barrios


(Affirmative)

1.2 Editorial Section 1.2 on Alternative Designs references section 6.1.10, which does not exist.

6.2.8

Royce King

ConocoPhillips

(Negative)

1.2 Editorial (This comment is not a basis for the negative ballot) The text refers to a paragraph (6.1.10) that does not exist in the draft document.

An alternate paragraph reference needs to be identified or an appropriate paragraph inserted in the draft.

6.2.8

W. Lockley


(Affirmative)

1.2 Editorial Refers to 6.1.10 Should refer to 6.2.8 Refere to 6.2.8 accepted

Louis Barrios


(Affirmative)

1.5 Editorial API staff should bold-face the term being defined to clearly identify the defined term.

done

Louis Barrios


(Affirmative)

1.5.7, 1.5.11, 1.5.12. 1.5.13

Editorial Consider grouping all torque definitions together to improve the readability of the standard, similar to how the NEC defines like terms.

Torque, Locked-rotor...

Torque, pull-in...

Torque, pull-out...

Torque, pulsating...

Not adopted

W. Lockley


(Affirmative)

Page 5 ISO References

Editorial Does not list ISO 10443 which is referenced in 4.3.1.9 Insert ISO 10443 Should be ISO 10448-1




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution

Louis Barrios


(Affirmative)

2.2.1.2.2 Editorial Several notes in the standard contain recommended and/or mandatory language, like the Note to section 2.2.1.2.2. Notes should provide additional explanatory information and should not contain requirements. Requirements should be removed from notes and placed within the main body of the text.

Remove mandatory language from notes and place within the main body of the text. The 546 committee should review all notes to verify that they are explanatory in nature.

Reviewed and adjusted as necessary.

W. Lockley


(Affirmative)

2.3.1.1 Editorial Calls up Class B per ANSI C50.13 which has been deleted. MG-1 covers temperatures OK

Delete C50.13 reference Comment withdrawn

W. Lockley


(Affirmative)

2.3.1.3 Editorial Last sentence starting with "Coils shall be tightly ..." is covered better in 2.3.1.10 which also specifies voltage levels of short circuits.

Delete last sentence. done

Royce King

ConocoPhillips

(Negative)

2.4.2.1 Editorial (This comment is not a basis for the negative ballot). In the second paragraph of section 2.4.2.1, that starts out "For machines operating at adjustable spped with operating speed.....", it would appear that this paragraph applies to ASDs.

Add a diamond bullet ahead of this paragraph.

done

Royce King

ConocoPhillips

(Negative)

2.4.2.8.d Editorial (This comment is not a basis for the negative ballot.) The parenthetical comment is not closed.

Close the comment. done

W. Lockley


(Affirmative)

2.4.5.1.5 Editorial Refers to 2.4.6.2.4 Should be 2.4.6.2.7 Change 2.4.6.2.4 to 2.4.6.2.7 done

W. Lockley


2.4.5.2..2 and 2.4.5.2.5

Editorial Reference to 6.1.9 should be to 6.2.7 Change 6.1.9 to 6.2.7 Done




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

(Affirmative)

Royce King

ConocoPhillips

(Negative)

2.4.6.1.1 Editorial (This comment is not a basis for the negative ballot) This paragraph contains information related to the ASDs and as such should be flagged as such.

Add the diamond shaped bullet ahead of the paragraph.

done

W. Lockley


(Affirmative)

Fig 2-1 Editorial Figure is hard to read Make Figure larger See API

Louis Barrios


(Affirmative)

2.2.6.2, Note 1

Editorial Suggest changing "at a voltage to ground" in the 5th line of Note 1 to "at an elevated voltage to ground". Current wording is awkward.

adopted

Louis Barrios


(Affirmative)

2.4.1.1.d Editorial Change "The impact of potential risks..." to "The risks..." Since risk includes the likelihood (potential) and consequence (impact) of an event, including the terms "impact" and "potential" is redundant.

adopted

Louis Barrios


(Affirmative)

2.4.2.1 Editorial The paragraph before 2.4.2.2 should contain a diamond to indicate this section applies to ASDs.

adopted

W. Lockley


(Affirmative)

2.4.6.2.7 Editorial Design review meeting is listed as being in 6.2.1.6 but is actually in 6.5

Change to 6.5 Adopted




Date: May 8, 2023

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Voter Name(Vote)


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Comment Resolution

Dan Eaton

Marathon Petroleum Company LLC

(Affirmative)

2.4.7.1.9 Editorial Add round bullet. adopted

Paul Hamer 2.4.7.1.14 2.4.7.1.14.a – (Editorial) It might read better as: “For pressurized systems with an oil outlet that provide a bearing inlet oil temperature of 50 C (122 F) or below, the oil passing through the bearing during shop testing and in operation shall not exceed a temperature rise of 20 C (36 F) and the maximum bearing metal temperature shall not exceed 93 C (200 F).”

adopted

Paul Hamer 2.4.7.1.15 2.4.7.1.15 – (Editorial) “For ambient conditions which that exceed 42C (110F) or when the inlet oil temperature exceeds 50°C (120F), special consideration shall be given to bearing design, oil flow, and allowable temperature rise.”

adopted

Dan Eaton


(Affirmative)

2.5.2.3 Editorial Add round bullet to paragraph. Adopted in principle

Dan Eaton


(Affirmative)

2.5.3.2 Editorial Add round bullet. Adopted in principle




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

Dan Eaton


(Affirmative)

3.8.2 Editorial Add round bullet. Fixed

Dan Eaton


(Affirmative)

3.8.3 Editorial Add round bullet. Fixed

W. Lockley


(Affirmative)

4.3.1.5 e 1 Editorial If power is listed in kW, torque should be listed in compatible units (i.e. Newton-meters)

Either change kW to HP, change Ftlb to N-m or use both unit systems.

Adopted (Removed units)

Dan Eaton


(Affirmative)

4.3.1.5 Editorial Add round bullet. Adopted

W. Lockley


(Affirmative)

4.3.1.16 Editorial Refers to potential transformers and current transformers. The term "potential transformer" is now discouraged by IEEE and "voltage transformer" preferred.

Change "potential transformers, current transformers ..." to "instrument transformers ..."

Adopted

W. Lockley


(Affirmative)

4.3.4.3 Editorial IEC 894 is now referred to as 60894 Change 894 to 60894 Adopted




Date: May 8, 2023

1 2 3 4 5 6

Voter Name(Vote)


Type of Comment


Comment Resolution

W. Lockley


(Affirmative)

4.3.5.1.1 Editorial Note under b for ASD operation partially duplicates that under a

Delete note under b Adopted

W. Lockley


(Affirmative)

4.3.5.3 b Editorial Equations 6 and 7 are now 2 and 3 Change 6 and 7 to 2 and 3 Adopted

Royce King

ConocoPhillips

(Negative)

4.3.3.13.2 Editorial (This comment is not a basis for the negative ballot.) This paragraph deals with requirements for ASD machines and as such should have the diamond shaped bullet ahead of it.

Add the diamond shaped bullet in the margin.

Adopted

W. Lockley


(Affirmative)

6.2 Editorial 6.2.18 is referenced but does not exist. 6.2.17 is the last paragraph

Change "in 6.2.1 through 6.2.18 ..." to "in this section ..."

Adopted

W. Lockley


(Affirmative)

6.2.2.2 f Editorial Refers to IEC 34 Should be IEC 60034 Change IEC 34 to IEC 60034 Adopted

Dan Eaton


(Affirmative)

6.8.5 Editorial Add round bullet. Already there

Dan Eaton

Marathon Petroleum

6.8.6 Editorial Add round bullet. Adopted




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution

Company LLC

(Affirmative)

Lon Ballard

Crouse-Hinds

(Affirmative)

Editorial In the basic document, in the last section, Footnotes, No. 13, NEMA's address is incorrect. It should be 1300 North 17th Street, Suite 1752, Rosslyn, VA 22209.

Adopted

Lorraine Padden


(Affirmative)

Appendix B Editorial Appendix B - Title, change motor to generator

Lorraine Padden


(Affirmative)

Appendix D (E)

Editorial Change the Synchronous Motor Data Sheet Guide to Appendix E because the heading at the top is Appendix E...Also shown as Appendix E is the Generator Guide?

This was confusing to me...please note all comments to Appendix E refer to Appendix D and Appendix E...sorry if this is confusing...

Adopted

Lockley to correct

Richard Virgilio

Foster Wheeler USA Corporation

(Affirmative)

2.2.1.2 Editorial Table 2-1, "Machine" Voltages are incorrect.

Table 2-2a & 2-2b, "Bus" Voltages are incorrect

Table 2-1, Change Machine Voltages from 2400,4160,6900,13800

to 2300,4000,6600,13200 respectively.

Table 2-2a,Change Bus Voltages from 3300,6600,11000

to 3450,6900,11500 respectively.

Withdrawn




Date: May 8, 2023

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Voter Name(Vote)


Type of Comment


Comment Resolution

Table 2-2b,Change Bus Voltages from 3000,6000,10000

to 3150,6300,10500 respectively.

Richard Virgilio

Foster Wheeler US

A Corporation

(Affirmative)

2.2.1.2 Editorial Please disregard my previous comments; machine & bus voltages are correct as shown. (.....for a moment I was thinking induction machines).

List associated with Paul Hamer Appendix D NFPA 497 Comments:

Check the NFPA document for addition of more materials. As a starting point, use this:




Date: May 8, 2023

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Type of Comment


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