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The following information provides general operatingguidelines. Consult your Anadrill representative if local

conditions warrant a deviation from standard procedures.

3.1 General specifications

Tables 3-1 and 3-2 provide the general performance

characteristics of PowerPak motors. These tables arebased on the following assumptions:

Flow rate

The flow-rate columns list the minimum and maxi-

mum flow rates through the stator. The overall flow

through a PowerPak motor can be increased by fitting

a nozzle in the rotor and bypassing some of the flow

through the center of the motor. When a bypass nozzle

is used the total flow rate must not exceed the limit in

the bypass column.

Rotating speed

The listed minimum and maximum rotation speeds

are for an unloaded motor (i.e., free-running rotary

speeds for the power section over its flow-rate range).

Hole diameter

These standard minimum and maximum bit/hole sizes

for the motors are the most commonly used. Other

size bits may be used.

Tool weight

The listed weights are estimated values for assembledtools. Tool weight increases with the longer length XP

power sections.

Tool length

The length of a PowerPak motor also varies with

the power section. These tool lengths for assembled

motors include the top sub/dump valve.

Operations 3.0

39

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Maximum WOBThe maximum weight on bit for a PowerPak motor is

determined by its bearing section and is independent

of the selected power section. These values are the

maximum loads that can be placed on a bit during

motor operation.

Working overpull

The working overpull is the maximum load that can

be placed on a stuck motor (pushing or pulling) with-

out crushing the axial bearing parts. The load must be

kept less than this amount to allow rerunning the

motor after it is unstuck.

Absolute overpull

Absolute overpull is the maximum load that can beplaced on a stuck motor (pushing or pulling) before

doing major damage to the motor and possibly leaving

a fish in the hole.

Bit pressure

To maintain a flow of cooling/lubricating fluid through

the bearing section, the bit used with a motor musthave a minimum amount of pressure drop. The bit

nozzle must be selected on the basis of bit hydraulics

calculations to provide the minimum pressure drop to

the bit. The maximum bit pressure drop should not be

exceeded for a relatively long time because the axial

and radial bearings of the motor could be washed out.

Operations3.1

40

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Table 3-1. PowerPak motor specificatio

Motor Lobes Stages Flow Flow Rate Rotating Hole TRate with Bypass Speed Diameter W

(gpm) (gpm) (rpm) (in.) (

Min Max Min Max Min Max

A213 XP 5:6 6.0 20 50 180 640 2.38 2.88

A238 M 5:6 2.5 20 50 160 400 2.88 3.50

XP 5:6 5.2 20 50 160 400

A287 M 5:6 3.3 20 80 130 120 480

XP 5:6 7.0 20 80 130 115 460 3.38 4.75

M 7:8 3.2 30 90 130 75 300

AD 7:8 2.0 175 525 130 390

A350 M 4:5 5.0 30 110 160 98 360 4.50 6.00

M 7:8 3.0 30 110 160 48 176

A375 XF 7:8 2.0 130 190 340 350 4.50 4.75

XC 7:8 2.0 130 190 340 350 4.50 4.75

A475 M 1:2 3.0 100 200 225 450

M 4:5 3.5 100 250 350 105 262

XP 4:5 6.0 100 250 350 105 262 5.88 7.00

M 7:8 2.2 100 250 350 56 140

XP 7:8 3.8 100 250 350 56 140

AD 7:8 2.0 875 2041 100 230

XF 7:8 2.0 100 250 105 262 5.88 6.13

XC 7:8 2.0 100 250 105 262 5.88 6.13

41

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Motor Lobes Stages Flow Flow Rate Rotating HoleRate with Bypass Speed Diameter W

(gpm) (gpm) (rpm) (in.) (

Min Max Min Max Min Max

A675 M 1:2 4.0 200 500 180 465

M 4:5 4.8 300 600 700 150 300

XP 4:5 7.0 300 600 700 150 300 8.38 9.88

M 7:8 3.0 300 600 700 86 165

XP 7:8 5.0 300 600 700 86 165

AD 7:8 2.0 1166 2333 60 118

A800 M 1:2 4.0 300 600 210 420

M 4:5 3.6 300 900 1100 75 225

XP 4:5 5.3 300 900 1100 75 225 9.88 14.75

M 7:8 3.0 300 900 1100 48 145

XP 7:8 4.0 300 900 1100 48 145

A962 M 1:2 5.0 400 800 190 380

M 3:4 4.5 600 1200 1500 133 266

XP 3:4 6.0 600 1200 1500 133 266 12.25 26.00 M 5:6 3.0 600 1200 1500 67 134

XP 5:6 4.0 600 1200 1500 67 134

A1125M 3:4 3.6 1000 1500 1700 115 170 17.50 26.00

ft3min

42

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Motor Lobes Stages Flow Flow Rate Rotating HoleRate with Speed Diameter W

(liter/min) Bypass (rpm) (mm)

Min Max (liter/min) Min Max Min MaxA213 XP 5:6 6.0 76 189 180 640 60.5 73.2

A238 M 5:6 2.5 76 189 160 400 73.2 88.9

XP 5:6 5.2 76 189 160 400

A287 M 5:6 3.3 76 303 492 120 480

XP 5:6 7.0 76 303 492 115 460 85.9 120.7

M 7:8 3.2 114 341 492 75 300

AD 7:8 2.0 5 15 130 395

A350 M 4:5 5.0 114 416 606 98 360 114.3 152.4

M 7:8 3.0 114 416 606 48 176

A375 XF 7:8 2.0 493 719 340 350 114.3 120.7

XC 7:8 2.0 493 719 340 350 114.3 120.7

A475 M 1:2 3.0 379 757 225 450 2

M 4:5 3.5 379 946 1325 105 262 2

XP 4:5 6.0 379 946 1325 105 262 149.4 177.8 4

M 7:8 2.2 379 946 1325 56 140 2

XP 7:8 3.8 379 946 1325 56 140 4

AD 7:8 2.0 25 58 100 230 3

A475 XF 7:8 2.0 379 946 105 262 149.4 155.8 3

XC 7:8 2.0 379 946 105 262 149.4 155.8 3

43

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Motor Lobes Stages Flow Flow Rate Rotating Hole ToRate with Speed Diameter Wei

(liter/min) Bypass (rpm) (mm) (k

Min Max (liter/min) Min Max Min Max

A675 M 1:2 4.0 757 1893 180 465 80

M 4:5 4.8 1136 2271 2650 150 300 79

XP 4:5 7.0 1136 2271 2650 150 300 212.9 251.0 98

M 7:8 3.0 1136 2271 2650 86 165 79

XP 7:8 5.0 1136 2271 2650 86 165 102

AD 7:8 2.0 33 66 60 118 87

A800 M 1:2 4.0 1136 2271 210 420 165M 4:5 3.6 1136 3407 4164 75 225 165

XP 4:5 5.3 1136 3407 4164 75 225 251.0 374.7 213

M 7:8 3.0 1136 3407 4164 48 145 158

XP 7:8 4.0 1136 3407 4164 48 145 182

A962 M 1:2 5.0 1514 3028 190 380 234

M 3:4 4.5 2271 4542 5678 133 266 231

XP 3:4 6.0 2271 4542 5678 133 266 311.2 660.4 260

M 5:6 3.0 2271 4542 5678 67 134 244

XP 5:6 4.0 2271 4542 5678 67 134 278

A1125 M 3:4 3.6 3785 5678 6435 115 170 444.5 660.4 290

m3/min

44

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Table 3-4, which summarizes model results for twotypical BHA configurations, serves as a field guide only:

BHA stabilized configuration predictions are calcu-

lated for a PowerPak motor with a single surface-

adjustable bent housing. The bearing housing is stabi-

lized with a stabilizer on top of the motor. Both stabi-

lizers have the same gauge: 18-in. undergauge for hole

sizes up to 1214 in. and 14-in. undergauge for 1712-in.

holes. The stabilizer can be 18- or 14-in. undergauge for

holes larger than 1214 in.

BHA slick configuration predictions are calculated for

an unstabilized PowerPak motor with a single surface-

adjustable bent housing. A slick assembly is above the

motor; there is no stabilizer.

The behavior of a BHA is highly dependent on local

conditions, particularly hole enlargement and formation

hardness. It is important to note that the predictions are

for equilibrium rates, which require some drilled dis-

tance to establish.

The predicted values are for 100% sliding with gravitytool face at zero (no turn). Depending on the type of

BHA, DLS may be greatly affected by the tool face

position. The directional behavior of the BHA in rotary

mode often depends on the position and gauge of the

second stabilizer. Consult your Anadrill representative

for DLS predictions adapted to your drilling conditions

and program.

1.0

46

Operations

3.2

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3.3 Job preparation

Motor selection

Hole diameter and flow rate usually dictate the tool

diameter. After the diameter has been chosen, the other

specifications can be selected.

Dump valveThe probability of plugging the dump valve can be

reduced by running a float valve above the motor. If a

float valve is run and plugging is still a potential prob-

lem, a crossover sub can be run instead of a dump valve.

Rotor/stator configuration

The rotor/stator configuration affects the bit speed (rpm)

at a given flow rate. The default standard is 4:5 (or 5:6

for PowerPak model A962M). Other configurations are

also available.

When OBM is used, the 4:5 ratio is preferred to 7:8

to minimize possible elastomer damage.

Rotor nozzle

A rotor nozzle should be specified if high flow rates

are anticipated.

Bent housing setting

The degree of bend depends on the anticipated maxi-

mum DLS in the hole section to be drilled. In deter-mining this setting, use Table 3-4 with caution because

the calculations are based on idealized hole conditions

for a limited number of BHA configurations. Local

experience should be taken into consideration, even if

it has been obtained using different steerable motors,

because those actual figures provide a guideline for the

predictions obtained from the planning software.The bend selection also depends on the diameter of

any stabilizers. The bend should be set at a reasonable

minimum to decrease possible stabilizer hanging.

Rotating the string to hold angle rather than continuing

Operations1.0

48

3.3

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Operations 1.0

49

to build angle or to ease WOB transfer may lead to pre-mature failure of the motor bearing or housing. It is

good practice to anticipate lower buildup rates at low

inclination or in soft sections where enlargement occurs.

Stabilizer gauge

If a slick assembly is run, the sleeve threaded-type bear-

ing housing must be used with the protector made up.When stabilization is used, 18- or 14-in. undergauge size

is recommended. The buildup rate is controlled by the

position and gauge of the second stabilizer.

Connection

The top connection must be checked for compatibility

with the BHA.

Bit selection

When selecting the bit to run with a PowerPak motor,

the following factors should be taken into account:

directional control

expected run duration drilling program

type of cutting structure required

fluid passage design

expected rate of penetration

estimated rotating time.

A widely accepted guideline for directional applica-

tions is to select a bit that has a tooth structure at least

one grade harder than what would be selected for rotary

drilling in the same formation. It is advisable to specify

gauge protection for the bit because directional drilling

subjects the gauge row of teeth to lateral as well as axial

loads. Fluid flow passages must have a total flow areathat will not cause excessive backpressure to the

PowerPak flow restrictor bearings.

3.3

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Operations 1.0

53

Figure 3-1. Determining axial bearing clearance.

3.4

! !

Clearance = A B

A

B

0

0

Table 3-6. Maximum allowable axial bearing clearance

Motor Clearance

A213 0.12 in. [3 mm]

A238 0.12 in. [3 mm]

A287 0.16 in. [4 mm]

A350 0.16 in. [4 mm]

A475 0.20 in. [5 mm]

A675 0.24 in. [6 mm]

A800 0.24 in. [6 mm]

A962 0.32 in. [8 mm]

A1125 0.32 in. [8 mm]

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5. The tongs can now be reversed and the joint tightenedto the correct torque. Once the joint is torqued,

according to Table 3-7, check the setting to make sure

it did not jump a slot while being tightened.

Figure 3-2. Adjusting the bent housing angle.

Introduction1.0

56

Operations3.4

03

03

0

0

3

3

03

3

0

0

3

3

0

0

3

32

5

1

4

3

Alignmentteeth

Stator adaptor

Adjustment ring

Offsethousing

! !

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pressure corresponding directly to the differentialpressure created across the rotor/stator as bit torque

increases.

Weight must be applied slowly at first, with any pump

pressure changes noted. The driller should proceed

carefully while acquiring a feel for the formation and

gently break in the bit until a pattern has been cut.

Drilling with the PowerPak motor is controlled by the

amount of WOB required and the differential pressure

(i.e., the difference between drilling and off-bottom

circulating pressure) developed by the motor section.

The value of this differential pressure is a direct indi-

cation of bit torque. It increases as WOB is added and

decreases as drill-off occurs. When the optimum drilling rate is reached, constant

standpipe pressure should be maintained to give

steady torque at the bit.

Many drillers make small incremental adjustments

to WOB to optimize the rate of penetration. However,

the application of WOB must be carefully controlledso that the differential pressure does not exceed the

recommended operating values or motor stalling may

occur.

When motor stalling occurs, the driller must immedi-

ately cut back or shut off the pumps to avoid dam-

aging the stator and other tool components. The torque

trapped in the drillstring must then be released slowly

by using the rotary table brake or clutch to allow the

kelly/rotary to turn to the left. Releasing the trapped

torque slowly reduces the risk of downhole backoff.

Drilling can then be resumed as described above. If

a motor stalls frequently under normal drilling condi-

tions, its operating pressure may have to be modified.

Operations1.0

58

3.4

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Operations 1.0

59

Paying careful attention to mud pressure variationsprovides early warning of many common downhole

problems. See Table 3-8 in Troubleshooting for

information to help identify and correct problems

before they lead to costly trips.

The rugged design of PowerPak motors makes it pos-

sible to exert high overpull in the event of a stuck bit.

Pulling out of hole and surface check after drilling

There are no special procedures required when pulling

out of hole (POOH).

If the rig is equipped with a top-drive system, the

driller will probably backream out of any tight spots

while carefully maintaining circulation and avoidingsidetracking if the drillstring is rerun through the

backreamed section.

PowerPak transmission rotational free play can be

checked at the surface by holding the bit and checking

the free play between the drive shaft and rotor.

The axial bearing clearance should be measured andchecked against the last measurement to determine

bearing wear.

Before the PowerPak motor is laid down, it should be

flushed with water. When a hose is used, the body is

held with a breakout tong, and the bit is rotated in the

bit breaker. When clean water drips out of the lower

radial bearing, the bit can be broken off.

If the SAB housing was set to a high angle,

the housing joint should be broken.

3.4

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Environmental constraintsThere is no Material Safety Data Sheet (MSDS) risk

for the PowerPak system; no specific environmental

protection procedures need be applied when operating

the motors. However, any mud remaining in motors

returning from jobs must be safely collected for later

recycling or disposal. Anadrill bases are equipped with

zero-discharge systems to handle the disposal of all

drilling fluids.

Troubleshooting

By paying careful attention to variations in mud-flow

pressure, it is possible to detect many common down-

hole problems that may occur while drilling and take

corrective action before a costly trip becomes necessary.

Information to identify and correct problems is listed in

Table 3-8.

Introduction1.0

60

Operations3.4

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61

Table 3-8. Troubleshootin

Observation Secondary Observation Possible Explan

ROP drops Unchanged flow rate Motor stalling Pressure surges Torque increases

ROP drops Flow rate drops Motor stalling Constant pressure

ROP decreases Normal WOB Bit balling Pressure increases Torque decreases

Normal WOB Stabilizers hangin

Torque increases

ROP decreases Normal WOB Junk in hole Irregular pressure Irregular rotary torque Cone locking

ROP decreases Normal WOB Washout or dumpPressure decreases Normal torque

Normal WOB Formation changROP normal Normal WOB, torque String ID obstrucPressure surges Flow rate unchanged Possible packoff

ROP normal Normal WOB, torque Washout Pressure decreases Flow rate unchanged

Abnormal mud return and pit levels Mud losses

ROP increases Formation chang

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3.5 Air drilling

PowerPak motors can be run on air or foam. Special

long-stage power sections are available for these applica-

tions. However, the standard multilobe PowerPak motor

has proved highly reliable when air or foam is used as

the circulating medium.

The design of long-stage power sections provides twokey features when using air. Because the long stage

length produces higher torque than the standard power

section for the same pressure and volume of air pumped

at surface, less surface pressure is required. The long-

stage power section also produces a bigger cavity

between the rotor and stator, which reduces the motors

speed and helps prevent runaway when pulling offbottom.

Both the standard and long-stage power sections

require adding some form of lubricant to the dry air. A

minimum of 2% surfactant (soap) in the air stream is

recommended. Increasing this amount enhances motor

performance.The air volume requirements for a PowerPak motor

vary depending on system pressure. In general, the max-

imum allowable volume of surface air (ft3/min) is equal

to

(3-1)

where the flow rate is in gpm and the standpipe pressure

is in psi. As the surface pressure decreases, so does the

maximum volume of air.

Motor stalls when air is used do not produce the sud-

den increase in standpipe pressure that occurs with

water- or oil-base mud. The compressibility of air andthe volume of the drillpipe result in a gradual increase in

air pressure when the motor stalls. This effect increases

with measured depth and drillpipe size. The sudden

Operations3.5

62

maximum flow rate standpipe pressure

110,

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decrease in ROP is a better indicator of a stalled motorwhen drilling with air.

A small nozzle should be run in the rotor when using

PowerPak motors on air. This helps bleed off air pres-

sure before and during connections, reducing the amount

of runaway experienced by the motor.

3.6 Short-radius drilling

Short-radius curves are used in reentry and multilateral

drilling where it is desirable to kick off below a problem

formation, external casing shoe or internal completion

component. A short-radius well requires less total

drilling and minimizes the need for an isolation packeror liner by keeping both the curve and the lateral within

the desired portion of the reservoir.

PowerPak XF motor

The PowerPak extra flex (XF) motor has articulations

above and below a shortened power section and is used

for drilling curves down to a 40-ft radius. High buildrates are achieved by locating the three points of contact

at the bearing section. The build mechanism consists of

the bit, rotating stabilizer, bent housing and a pair of

shimmable pads that act like an offset field-adjustable

stabilizer. A significant innovation is the stabilizer geom-

etry located in the bit drive sub (Fig. 3-3). As this second

point of contact rotates, it smoothes out steps or ledges

created by bit offset and allows easier sliding of the

BHA. The stabilizers and pads (Fig. 3-4) are easily con-

figured on the rig floor to achieve build rates as high as

145/100 ft.

Above the bearing section, motor flexibility is

achieved with articulations above and below the powersection (Fig. 3-5). These pressure-sealed ball-and-socket

mechanisms act much like the universal joints on an

automobile drivetrain, transmitting torque yet bending

in any plane. This allows the system to rotate while

drilling and also negotiate severe doglegs without regard

Operations 3.5

63

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Figure 3-3. XF short-radius motornear-bit stabilizer and bit.

Figure 3-4. XF short-radius motor adjustable pads.

Operations3.6

64

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Pipe connections J

K

L

M

N

OS

R

I

H

T

PG

F

E

Q

D

C

B

B

A

Figure 3-7. PowerPak motor fishing diagram.

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Table 3-11. Fishing dimensions (m

Reference Description (cm) A213 A238 A287 A350

A Dump valve/top sub OD 5.41 6.05 7.77 9.53

B Stator/stator adaptor OD 5.41 6.05 4.78 8.89

C Adjusting ring OD (kick pad) 5.72 6.27 7.59 9.12D Offset housing OD 5.41 6.05 7.37 8.89

E Stabilizer body maximum OD NA NA NA NA

F Bearing housing/nut OD 5.41 6.05 7.29 8.89

G Bit box OD 5.72 6.05 7.77 9.53

I Drive shaft OD 3.00 4.01 4.78 5.79

J Dump valve/top sub length 11.58 15.01 24.43 22.86

K Stator adaptor length 18.90 25.30 37.80 31.70

L Adjusting ring length 6.10 5.79 7.62 9.45

M Offset housing length 30.18 32.00 42.06 49.68N Bearing housing fishing neck 17.37 18.90 24.08 26.82

O Bearing housing bottom neck NA NA NA NA

P Drive shaft visible length 10.06 10.06 12.50 15.24

Q Bend to bit box length 63.40 69.80 88.70 101.80

R Stabilizer upset length NA NA NA NA

S Sleeve length NA NA NA NA

A Dump valve/top sub ID 1.91 1.91 3.51 4.45

B Stator/stator adaptor ID 3.81 4.11 4.90 5.72C Adjusting ring ID 3.96 4.75 5.59 6.86

D Offset housing ID 2.77 3.33 4.78 5.41

E Bearing housing/nut ID 3.38 3.81 4.55 5.46

F Drive shaft ID 1.27 1.27 1.91 2.08

NA = not applicable

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Introduction

Operations

68

3.7

Table 3-12. Rotor dimensions (metric units)

Motor Lobes Stages Reference T Reference HRotor Contour Standard RotorLength (cm) Major Diameter (cm)

A213 XP 5:6 6.0 200.66 3.139

A238 M 5:6 2.5 120.65 3.366

XP 5:6 5.2 244.86 3.366

A287 M 5:6 3.3 129.54 4.211XP 5:6 7.0 269.24 4.211

M 7:8 3.2 129.54 4.610

AD 7:8 2.0 165.10 4.610

A350 M 4:5 5.0 271.78 4.928

M 7:8 3.0 271.78 4.989

A375 XF 7:8 2.0 97.64 6.636

A475 M 1:2 3.0 327.66 6.182M 4:5 3.5 256.54 7.396

XP 4:5 6.0 439.42 7.396

M 7:8 2.2 256.54 7.457

XP 7:8 3.8 436.88 7.480

AD 7:8 2.0 363.22 7.681

XF 7:8 2.0 120.65 7.790

A675 M 1:2 4.0 407.37 9.703

M 4:5 4.8 341.22 10.719XP 4:5 7.0 496.57 10.719

M 7:8 3.0 282.80 11.481

XP 7:8 5.0 459.74 11.481

AD 7:8 2.0 355.60 11.430

A800 M 1:2 4.0 438.15 11.074

M 4:5 3.6 368.30 12.548

XP 4:5 5.3 541.02 12.548

M 7:8 3.0 368.48 13.172

XP 7:8 4.0 478.03 13.172

A962 M 1:2 5.0 492.76 13.858

M 3:4 4.5 402.84 15.184

XP 3:4 6.0 534.92 15.184

M 5:6 3.0 402.84 15.839

XP 5:6 4.0 535.94 15.839

A1125 M 3:4 3.6 463.80 17.699

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Pipe connections

B

C

D

E

A

N

O

M

L

I

J

J

I

I

S

R

T

K

H

Q

F

G P

Figure 3-8. PowerPak XF motor fishing diagram.

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Table 3-15. PowerPak XC fishing dimensions (U.S. units)

Reference Description (in.) A375XC A475XC

Length

A Overall length 126.00 159.12

B Orientation sub to stator 35.40 43.20

C Orientation sub to articulated housing 30.00 34.80

D Orientation sub to float sub 17.04 20.40

E Stator 52.68 64.80

F Adjusting ring pad 3.60 6.00

G Offset housing 23.28 18.00

H Bearing housing 8.28 11.64

I Drive sub to bearing 6.12 6.00

OD dimension

J Orientation sub 3.50 5.00K Wear band 3.87 5.25

L Stator at connection 3.75 4.75

M Stator at midbody 3.60 4.75

N Stator at connection 3.75 4.75

O Stator adaptor 3.75 4.75

P Adjusting ring pad Depends on hole size

Q Ofset housing connection 3.75 4.75

R Offset housing 3.63 4.56

S Bearing housing 3.75 4.75

T Bearing shoulder 4.06 4.75

U Drive shaft 2.30 3.06

V Drive sub 4.06 4.75

ID dimension

W Orientation sub 2.25 2.75

X Pin 2.06 1.91

Y Float 2.44 2.44

Z Stator 3.13 3.75

Depends on power section

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Operations3.7

Table 3-16. PowerPak XC fishing dimensions (metric units)

Reference Description (cm) A375XC A475XC

Length

A Overall length 320.00 400.00

B Orientation sub to stator 90.19 110.00

C Orientation sub to articulated housing 76.00 90.00

D Orientation sub to float sub 43.00 50.00

E Stator 133.00 160.00

F Adjusting ring pad 9.14 15.00

G Offset housing 59.00 46.00

H Bearing housing 21.00 30.00

I Drive sub to bearing 16.00 15.00

OD dimension

J Orientation sub 8.90 12.80K Wear band 9.80 13.30

L Stator at connection 9.50 12.10

M Stator at midbody 9.10 12.10

N Stator at connection 9.50 12.10

O Stator adaptor 9.50 12.10

P Adjusting ring pad Depends on hole size

Q Ofset housing connection 9.50 12.10

R Offset housing 9.20 11.60

S Bearing housing 9.50 12.10

T Bearing shoulder 10.30 12.10

U Drive shaft 5.80 7.80

V Drive sub 10.30 12.10

ID dimension

W Orientation sub 5.70 7.00

X Pin 5.20 4.80

Y Float 6.20 6.20

Z Stator 8.00 9.50

Depends on power section

Pphb_s03

Documents

Transcript of Pphb_s03