Westinghouse Porcel-line DHP Series User manual

l
.
B
.
32
-
253
-
4
B
Instructions
for
Porcel
-
line
®
Type
DHP
Magnetic
Air
Circuit
Breakers
Westinghouse
Electric
Corporation
Distribution
and
Control
Business
Unit
Commercial
Operations
Division
-
ILS
Department
Pittsburgh
,
PA
15220
I
.
B
.
32
-
253
-
4
B
Effective
January
,
1989
Supersedes
I
.
B
.
32
-
253
-
4
A
dated
September
,
1978
Courtesy of NationalSwitchgear.com

CAUTION
The
circuit
breakers
described
in
this
book
have
been
designed
and
tested
to
operate
within
their
nameplate
ratings
.
Operation
outside
of
these
ratings
may
cause
them
to
fail
,
resulting
in
bodily
injury
and
property
damage
.
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PURPOSE
This
instruction
book
is
expressly
intended
to
cover
the
installation
,
operation
and
maintenance
of
Type
DHP
Magnetic
Air
Circuit
Breakers
.
For
application
information
,
consult
your
nearest
Westinghouse
sales
office
,
see
Westinghouse
Application
Data
32
-
262
,
or
appropriate
ANSI
Standards
.
SAFETY
All
Safety
Codes
,
Safety
Standards
and
/
or
Regulations
as
they
may
be
applied
to
this
type
of
equipment
must
be
strictly
adhered
to
.
All
possible
contingencies
which
may
arise
during
installation
,
operation
,
or
maintenance
,
and
all
details and
variations
of
this
equipment
do
not
purport
to
be
covered
by
these
instructions
.
If further
information
is
desired
by
purchaser
regarding
his
particular
installation
,
operation
or
maintenance
of
his
equipment
,
the
local
Westinghouse
Electric
Corporation
representative
should be
contacted
:
Courtesy of NationalSwitchgear.com

II
$
J
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ui
INDEX
Page
Introduction
General
Description
Safety
Features
Safe
Practices
Receiving
,
Handling
and
Storing
Receiving
Handling
Storing
Description
and
Operation
Manual
Spring
Charging
Manual
Closing
Manual
Tripping
Maintenance
Closing
Electrical
Closing
and
Tripping
Stored
Energy
Mechanism
Mechanism Panel
Pole
Units
Contacts
Arc
Chutes
Interphase
Barriers
Leve
ring
-
in
Device
Puffer
Shutter
Roller
Guide Channel
and
Rail
Latch
Secondary
Contacts
Ground
Contact
Breaker Position Indicator and
MOC
Switch
Operating
Pin
Interlocks
IX
1
3
3
5
5
5
7
8
8
9
9
9
13
13
14
14
14
15
17
17
18
18
18
20
20
20
21
21
Breaker
-
Cell
Coding
Plates
Levering
-
in
Interlock
Anti
-
Close
Interlock
Floor
Tripping
and
Closing Spring
Release
Interlocks
Rail
Latch
Barrier
Maintenance Handle
.
Control
Schemes
Undervoltage
Trip
Attachment
Accessories
21
22
22
22
22
22
22
22
24
24
Maintenance
Handle
Turning Dolly
Arc
Chute
lifter
Levering
-
in
Crank
50
DHP
350
Arc
Chute
Hanger
Initial
Inspection
and
Operation
Installation
Adjustments
Mechanism
Tripping
Latch
Clearance
Holding
Pawl
Anti
-
Close
Interlock
24
24
24
24
26
27
30
30
30
30
30
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iv
INDEX
(
Contd
.
)
Page
Latch
Check
Switch
Contact
Contact
Separation
Contact
Penetration
Minor
Adjustment
Major
Adjustment
Hinge
Floor
Tripper
Maintenance
Inspection
/
Maintenance
Programs
Inspection
/
Maintenance
Records
Inspection
Schedules
Routine
Inspection
Interval
Based
on
Time
Routine
Inspection
Interval
Based
on
Load
Switching
Inspection
Interval
Based
on
Short
Circuit
Switching
Service
Conditions
Routine
Inspection
Mechanical
Operation
Low
Level
Load
Current
Switching
Duty
Moderate
to
High
Level
Switching
Duty
Capacitor
Switching
Total
Breaker
Life
Changing
Duty
Considerations
Inspection
/
Maintenance
Program
Reviews
Maintenance
Procedures
Contacts
Arc
Chute
Mechanical
Timing
Minimum
Closing
Speed
Minimum
Contact
Separation
Mechanism
Insulation
Lubrication
Mechanism
Roller
Bearings
Main
Contacts
Secondary
Contacts
Drawout
Disconnect
Fingers
Spring
Charging
Motor
Removal
of
Closing
Spring
Breaker
Data
Sheets
Renewal
Parts
31
31
31
31
32
32
32
32
34
34
34
34
34
34
35
36
36
36
36
36
37
37
37
37
37
37
38
39
39
40
40
40
40
40
40
40
41
41
41
41
42
to
57
58
#
\
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V
LIST
OF
ILLUSTRATIONS
Page
Description
Figure
150
DHP
500
,
1200
Amperes
With
and
Without
Barrier
(
392990
and
391370
)
Front
View
of
15.0
kV
Breaker
(
391357
)
Rear
View
of
15.0
kV
Breaker
(
391356
)
Mechanism
Panel
Breaker
Handling
Arc
Chute
on
Floor
Lifting
150
DHP
750
C
and
150
DHP
1000
Barrier
Charging Closing
Spring
by
Hand
(
388811
)
Releasing Closing
Spring by
Hand
to
Close
Breaker
(
393526
)
Spring
Charge
Indicator
(
391329
)
Tripping
Breaker
by
Hand
(
393524
)
Closing
Breaker with Maintenance
Handle
(
391368
)
The
Four
Positions of
the
Closing
Cam
and
Trip
Linkage
Underside
of
15.0
kV
Breaker
(
393522
)
Schematic
Views
of
Spring
Charging
Parts
Pole
Unit
Assemblies
a
.
8.25
and
15.0
kV
,
1200
Amperes
(
393001
)
b
.
8.25
and
15.0
kV
,
3000
Amperes
(
392975
)
Pole
Unit
Assemblies
a
.
4.76
kV
,
1200
Amperes
(
393901
)
b
.
4.76
kV
,
3000
Amperes
(
393902
)
4.76
kV
Pole
Unit
with
Arc
Chute
Schematic
of
Levering
-
in
Device
and
Interlock
Breaker
in
Housing
—
Levering
-
in
Nut
and
Screw
Disengaged
(
393344
-
5
A
)
.
.
Side
View
—
Breaker
in
Housing
(
393303
)
Breaker
Guide
and
Rail
Latch
(
393301
)
Releasing
Rail
Latch
(
388824
)
Breaker
in
Cell
—
Secondary
Contacts
Engaged
(
393314
)
Operation
of
Secondary
Contacts
with
Breaker
in
Test
Position
Breaker
in
Cell
a
.
Ground
Contacts
Disengaged
b
.
Ground
Contacts
Engaged
Coding
Plates
Floor
Tripping
and
Closing
Spring
Release
Levers
(
Floor
Trippers
)
(
393900
)
.
D
-
C
Control
Schemes
—
Typical
A
-
C
Control
Schemes
-
Typical
Undervoltage
Trip
Attachment
Contact
Adjustments
Using
Turning
Dolly
(
391371
)
Using
Levering
-
in
Crank
(
388826
)
Holding
Pawl
Adjustment
Floor
Tripper
Adjusting
Tool
Floor
Tripper
Adjustments
4.76
kV Chassis
—
Rear
View
C
Closing Spring
Removal
Tool
Mount
Arc
Chute
Connect
Shunt
Strap
Barrier
Mounting
1
1
2
2
2
3
4
4
5
5
6
6
6
7
8
8
8
9
8
10
9
11
9
12
10
13
11
14
12
15
15
16
15
15
16
17
16
16
16
18
17
19
18
20
19
21
19
22
19
23
20
24
20
25
26
21
21
21
21
27
22
28
23
29
23
30
24
31
25
32
28
33
29
34
31
35
36
32
33
37
41
38
41
39
42
40
42
41
42
42
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vi
UST
OF
ILLUSTRATIONS
(
Contd
.
)
Page
Description
Figure
43
Tilt
Arc
Chute
Stationary
Main
Contacts
.
.
Stationary
Arcing
Contacts
Mount
Arc
Chute
Connect
Shunt
Strap
Barrier
Mounting
Tilt
Arc
Chute
Stationary
Main
Contacts
.
.
a
.
1200
Amperes
b
.
2000
Amperes
Stationary
Arcing
Contacts
Lift
Arc
Chute
Mount
Arc
Chute
Connect
Shunt
Strap
.
.
.
.
,
Barrier
Mounting
Tilt
Arc
Chute
Stationary
Main
Contacts
..
Stationary
Arcing
Contacts
Mount
Arc
Chute
Connect
Shunt
Strap
Barrier
Mounting
Stationary
Main
Contacts
.
Stationary
Arcing
Contacts
Mount
Arc
Chute
Connect
Shunt
Strap
Barrier
Mounting
Stationary
Main
Contacts
.
.
a
.
1200
Amperes
b
.
2000
Amperes
c
.
3000
Amperes
Stationary
Arcing
Contacts
Mount
Arc
Chute
Connect
Shunt
Strap
Barrier
Mounting
Hit
Arc
Chute
Stationary
Main
Contacts
.
a
.
1200
Amperes
b
.
2000
Amperes
c
.
3000
Amperes
Stationary
Arcing
Contacts
Mount
Arc
Chutes
Connect
Shunt
Strap
Barrier
Mounting
Tilt
Arc
Chute
(
391343
)
.
.
Stationary
Main
Contacts
.
.
a
.
1200
Amperes
b
.
2000
Amperes
c
.
3000
Amperes
Stationary
Arcing
Contacts
Mount
Arc
Chute
43
43
44
43
45
44
46
44
47
45
48
45
49
45
50
45
45
45
51
46
52
46
53
46
54
47
55
47
56
47
57
47
58
48
59
48
60
49
61
49
62
49
63
50
64
50
65
51
66
51
67
51
51
51
51
68
52
69
52
70
53
71
53
72
53
73
53
53
53
53
74
54
75
54
76
55
77
55
78
55
79
55
55
f
55
55
80
56
81
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vii
LIST
OF
ILLUSTRATIONS
(
Contd
.
)
Figure
Description
Page
Connect
Shunt
Strap
Barrier
Mounting
Tilt
Arc
Chute
Stationary
Main
Contacts
a
.
1200
Amperes
b
.
2000
Amperes
c
.
3000
Amperes
Moving
Arcing
Contacts
Stored
Energy
Mechanism
Parts
and
Parts
list
Crank
Shaft
Subassembly
Crank
Shaft
Subassembly
Parts
Parts
for
Close
and
Trip
Linkage
Subassembly
Spring
Charging
Motor
Assembly
Partial
Assembled
View
and
Details
of
50
DHP
250
Arc
Chute
Arcing
Contact
Assemblies
82
56
83
57
84
57
85
57
57
57
57
86
57
87
60
,
61
88
62
89
63
90
64
91
65
92
66
67
93
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»
*
YIU
A
L
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