Powell PowlVac 38 ARM 3000A 4 Series Training manual

Instruction Bulletin - 01.4IB.65131
PowlVac 38™ARM 3000A Series 4
Vacuum Circuit Breaker
38kV, 40kA, 3000A
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PowlVac 38™ ARM 3000A Series 4
Vacuum Circuit Breaker
01.4IB.65131
Contact Information
Powell Electrical Systems, Inc.
powellind.com
[e-mail]
Service Division
7232 Airport Blvd
Houston, Texas 77061
Tel: [phone]

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01.4IB.65131
Signal Words
As stated in ANSI Z535.4-2007, the signal word is
a word that calls attention to the safety sign and
designates a degree or level of hazard seriousness.
The signal words for product safety signs are
“Danger”, “Warning”, “Caution”, and “Notice”.
These words are defined as:
DANGER indicates an imminently hazardous
situation which, if not avoided, will result in
death or serious injury.
!
DANGER
!
WARNING
WARNING indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injury.
!
CAUTION
CAUTION, used with the safety alert symbol,
indicates a hazardous situation which, if not
avoided, could result in minor or moderate
injury.
CAUTION, used without the safety alert
symbol, is used to address practices not
related to personal injury.
CAUTION
NOTICE
NOTICE is used to address practices not related
to personal injury.
Qualified Person
For the purposes of this manual, a qualified
person, as stated in NFPA 70E®, is one who has
skills and knowledge related to the construction
and operation of the electrical equipment and
installations and has received safety training to
recognize and avoid the hazards involved. In
addition to the above qualifications, one must also
be:
1. trained and authorized to energize,
deenergize, clear, ground, and tag circuits
and equipment in accordance with
established safety practices.
2. trained in the proper care and use of
personal protective equipment (PPE)
such as rubber gloves, hard hat, safety
glasses or face shields, flash clothing, etc.,
in accordance with established safety
practices.
3. trained in rendering first aid if necessary.

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Vacuum Circuit Breaker
01.4IB.65131
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01.4IB.65131
Contents
Ch 1 General Information.................................................................................................1
A. Scope ................................................................................................................................................................2
B. purpoSe.............................................................................................................................................................2
c. InStructIon BulletInS AvAIlABle electronIcAlly.....................................................................................................2
D. ASSocIAteD InStructIon BulletInS .........................................................................................................................2
Ch 2 Safety ........................................................................................................................3
A. SAfe Work conDItIon .........................................................................................................................................3
B. SAfety GuIDelIneS ...............................................................................................................................................4
c. GenerAl.............................................................................................................................................................5
D. SpecIfIc..............................................................................................................................................................5
e. X-rAyS ..............................................................................................................................................................6
f. SAfety lABelS .....................................................................................................................................................6
Ch 3 Equipment Description.............................................................................................7
A. GenerAl.............................................................................................................................................................7
B. the StoreD enerGy MechAnISM .............................................................................................................................7
1) Mechanical Description.......................................................................................................................................................... 7
2) Electrical Description.............................................................................................................................................................16
c. AutoMAtIc rAckInG MechAnISM......................................................................................................................... 17
1) General Description...............................................................................................................................................................17
2) Racking Mechanism ..............................................................................................................................................................21
D. cIrcuIt BreAker coMpArtMent InterfAceS ........................................................................................................... 21
1) Primary Disconnecting Devices..........................................................................................................................................21
2) Secondary Disconnecting Devices.....................................................................................................................................22
3) MOC (Mechanism Operated Cell Switch) Actuator........................................................................................................22
4) TOC (Truck Operated Cell Switch) Actuator.....................................................................................................................22
5) Ground Connection ...............................................................................................................................................................22
6) Shutter Rollers.........................................................................................................................................................................22
7) Anti-Rollout Latch..................................................................................................................................................................22
e. vAcuuM InterrupterS ....................................................................................................................................... 23
f. vAcuuM Interrupter connectIon....................................................................................................................... 23

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PowlVac 38™ ARM 3000A Series 4
Vacuum Circuit Breaker
01.4IB.65131
Contents
Ch 4 Installation..............................................................................................................24
A. receIvInG ........................................................................................................................................................ 24
B. hAnDlInG........................................................................................................................................................ 24
c. StorAGe.......................................................................................................................................................... 25
D. plAcInG the cIrcuIt BreAker Into ServIce............................................................................................................ 26
1) High Voltage Insulation Integrity .......................................................................................................................................26
2) Vacuum Integrity....................................................................................................................................................................27
3) Control Voltage Insulation Integrity..................................................................................................................................29
4) Mechanical Operation Check..............................................................................................................................................29
5) Electrical Operation Check...................................................................................................................................................30
6) Emergency Racking Mechanism Check............................................................................................................................31
e. InSertInG the cIrcuIt BreAker Into the cIrcuIt BreAker coMpArtMent .................................................................. 31
1) Prior to Inserting the Circuit Breaker into the Circuit Breaker Compartment:.........................................................32
2) Inserting the Circuit Breaker to the Test/Disconnect Position .....................................................................................33
3) Inserting the Circuit Breaker to the Connected Position...............................................................................................34
f. reMovInG the cIrcuIt BreAker froM the cIrcuIt BreAker coMpArtMent.................................................................. 35
1) Removing the Circuit Breaker from the Connected to the Test/Disconnected Position ........................................35
2) Removing the Circuit Breaker from the Test/Disconnected Position out of the
Circuit Breaker Compartment.............................................................................................................................................36
Ch 5 Maintenance...........................................................................................................38
A. GenerAl DeScrIptIon ........................................................................................................................................ 38
1) Introduction.............................................................................................................................................................................38
2) Inspection and Cleaning ......................................................................................................................................................39
B. MechAnISM AreA ............................................................................................................................................. 39
1) Mechanical Operation ..........................................................................................................................................................39
2) Lubrication...............................................................................................................................................................................40
3) Closing Spring Removal........................................................................................................................................................44
4) Slow Closing of Mechanism.................................................................................................................................................45
5) Mechanism Adjustments......................................................................................................................................................45
6) Electrical Operation...............................................................................................................................................................50
c. vAcuuM Interrupter AnD contAct AreA ............................................................................................................. 50
1) Vacuum Interrupter and Contact Erosion ........................................................................................................................50
2) Vacuum Integrity....................................................................................................................................................................50
3) Mechanical Adjustment of Vacuum Interrupters ...........................................................................................................50
D. optIonAl MAIntenAnce proceDureS ................................................................................................................... 51
1) High Potential Tests ...............................................................................................................................................................51
2) Timing.......................................................................................................................................................................................51
3) Primary Resistance Check ....................................................................................................................................................51

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01.4IB.65131
Ch 6 Recommended Renewal Parts and Replacement Procedures...............................52
A. orDerInG InStructIonS ..................................................................................................................................... 52
B. recoMMenDeD reneWAl pArtS ........................................................................................................................... 52
c. replAceMent proceDureS.................................................................................................................................. 52
1) Vacuum Interrupter Assembly.............................................................................................................................................53
2) Closing Coil Assembly ...........................................................................................................................................................53
3) Primary Shunt Trip Coil Assembly ......................................................................................................................................53
4) Secondary Shunt Trip Coil Assembly .................................................................................................................................53
5) Undervoltage Device Assembly (UV).................................................................................................................................53
6) Charging Motor Assembly ...................................................................................................................................................53
7) Anti-Pump Relay Assembly..................................................................................................................................................53
8) Latch Check Switch................................................................................................................................................................53
9) Motor Cutoff Switch Assembly............................................................................................................................................53
10) Auxiliary Switch ......................................................................................................................................................................53
Contents

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PowlVac 38™ ARM 3000A Series 4
Vacuum Circuit Breaker
01.4IB.65131
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Figures
Figure 1 PowlVac 38™ ARM 3000A Series 4 Vacuum Circuit Breaker
Front View with Cover.....................................................................................8
Figure 2 PowlVac 38™ ARM 3000A Series 4 Vacuum Circuit Breaker
Front View No Cover .......................................................................................9
Figure 3 Close-Up View of the PowlVac 38™ARM 3000A Series 4
Circuit Breaker Mechanism ..........................................................................10
Figure 4 PowlVac 38™ ARM 3000A Series 4 Vacuum Circuit Breaker
Rear View with Barriers Removed ................................................................11
Figure 5 Cam and Fundamental Linkage Positions ...................................................13
Figure 6 Mechanism and Trip Linkages......................................................................14
Figure 7 Operation Sequence .....................................................................................18
Figure 8 Typical Control Scheme ................................................................................19
Figure 9 Circuit Breaker in Shipping Carton...............................................................24
Figure 10 Circuit Breaker on Crane...............................................................................25
Figure 11 Inserting Circuit Breaker into Compartment ...............................................33
Figure 12 Secondary Disconnecting Device.................................................................33
Figure 13 Lubrication....................................................................................................42
Figure 14 Lubrication (cont) .........................................................................................43
Figure 15 Main Closing Spring Assembly Compressed for Removal ...........................44
Figure 16 Main Closing Spring Assembly Installed ......................................................44
Figure 17 Primary & Secondary Trip Prop Adjustment ................................................46
Figure 18 Feeler Gauge .................................................................................................47
Figure 19 Latch Check Switch Adjustment ...................................................................48
Figure 20 Primary Current Path....................................................................................54
Figure 21 Control Devices.............................................................................................56

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01.4IB.65131
Tables
Table A Field Dielectric Test Values..................................................................................26
Table B Lubrication ..........................................................................................................41
Table C Timing..................................................................................................................51
Table D Primary Resistance .............................................................................................51
Table E Primary Current Path ..........................................................................................54
Table F Control Devices....................................................................................................55
Table G Miscellaneous Parts............................................................................................57

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PowlVac 38™ ARM 3000A Series 4
Vacuum Circuit Breaker
01.4IB.65131
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