n
Medium voltage switchgear
for the full range of applications
4.76kV-38kV 2
Medium voltage switchgear
from a a company you can trust
Reaching from 4.76kV to 38kV and including leading-edge arc resistant
technology across the line, GE delivers medium voltage switchgear
solutions for every application, everywhere.
GE has reached agreement with
Powell to provide 27kV and 38kV
switchgear as well as a full range
of arc resistant technology to
allow us to meet the increasingly
demanding requirements of medium
voltage switchgear users. The scope
of the combined line is matched by
the depth of the engineering and the
unsurpassed level of performance
and reliability.
This is one more unmistakable sign
of GEs long-term commitment to
delivering the complete range of
electrical distribution equipment
and systems you need for every
industrial application.
Arc Resistant Switchgear
4.76kV 38kV
PV System 27
®
and PV System 38
®
27kV 38kV
POWER/VAC
®
4.76kV 15kV 3
Medium voltage switchgear
for the full range of applications 4
POWER/VAC
®
4.76kV-15kV switchgear
Not only was GE first to market vacuum interrupter technology, we
invented it. And, with an installed base of 125,000 units, POWER/VAC
continues to bring you high quality, low maintenance and long life.
POWER/VAC switchgear incorporates the compartment concept with grounded metal barriers
that segregate primary functions so that no live parts are exposed. Safety interlocks are
standard, as are closed door racking and storage, breaker position indicator and positively
actuated safety shutters.
It meets a wide variety of protection and switching applications. All functional units incoming
line, radial feeders, feeder bypass, bus-tie, bus-entrance and auxiliary units are available to
give you wide latitude in system planning. These, plus the versatility of one- or two-high
stacking, afford maximum value for your application dollar. 5
At the heart of every POWER/VAC switchgear is the vacuum interrupter,
which delivers fast, quiet power switching and precise arc extinction. Oil
gas or high pressure air is not needed to aid interruption, resulting in a
simpler, more reliable breaker.
POWER/VAC breakers feature easy-to-read controls and indicators, an
easily inspected primary disconnect, contact erosion indicator and
precisely tooled breaker mechanisms. A lower compartment roll-in breaker
is available for indoor or walk-in outdoor switchgear.
Standardization and interchangeability of POWER/VAC breakers greatly
simplify maintenance and training. For example, all breakers are the same
size, and most frame parts, primary conductors, disconnects and mecha-
nisms are interchangeable.
The main bus
compartment is
completely isolated
by 11 gauge metal
barriers. Bus bars
insulated with high
dielectric epoxy
pass through track-
resistant polyester
glass barriers
between cubicles.
The secondary dis-
connect combines
the contact reliability
of a plug with the
self-aligning con-
venience of sliding
contacts.
Current transformers
are located behind
mechanically actu-
ated safety shutters
and a barrier that
isolates the primary
disconnect as the
breaker is moved
into the disconnect
position.
Voltage transformer
trays are automati-
cally grounded on
withdrawal, which
provides isolation
from primary
connections.
Dry type control
power transformers
are insulated with
molded resin epoxy
and mounted in a
drawout tray for
easy access.
Even two-breaker
vertical sections
offer ample space
for terminating up
to two 750 MCM
cables per phase. 6
POWER/VAC
Specifications
Standards
POWER/VAC switchgear is fully tested to all applicable ANSI, IEEE and NEMA standards.
Weights & Dimensions
1 An optional 82" depth is available for some indoor applications. Consult factory.
2 For common aisle (CA) construction, add 1500 pounds to weight of 2 indoor vertical sections.
3 Standard front aisle space required 66. Reduced front aisle space of 58" is available on indoor construction.
4 Weights listed are for estimating purposes only.
5 For protected aisle (PA) construction, add 1100 pounds to weight of each outdoor vertical section.
Equipment Rating
Indoor
Outdoor
4.76, 8.25 & 15 KV
Height
(in)
Depth
(in)
1
2-High Breaker
Vertical Section
(less breakers)
Auxiliary Vertical
Section
Height
(in)
Depth
(in)
1
2-High Breaker
Vertical Section
(less breakers)
Auxiliary Vertical
Section
Current
Rating
(Amps)
Breaker
Weight
(lbs)
Width
(in)
Weight
(lbs)
Width
(in)
Weight
(lbs)
Width
(in)
Weight
(lbs)
Width
(in)
Weight
(lbs)
1200
550
95
94
36
3050
36
2950
111 OD.
112 PA
or CA
106 OD,
181 PA,
272 CA
36
3550
36
3450
2000
650
3100
3000
3600
3500
3000
780
3180
3080
3680
3580
3500
850
3280
3180
3780
3680
4000
860
3300
3200
3800
3700
6
6
PV
Breaker
3
97
111
112 97
A 36 inch
extension
on the left
and right
side is
r
PV
Breaker
P
181
9
95
PV
Breaker
PV
Breaker
PV
Breaker
PV
Breaker
A 36 inch
extension
on the left
and right
side is
required
for breaker
lift truck
PV
Breaker
PV
Breaker
112
97
94
94
Indoor
94
6
3
72
Aisle
Outdoor Common Aisle 7
Typical Sections
Circuit Breaker Characteristics
1 Maximum voltage for which the breaked is designed and upper limit of operation
2 4000A rating is forced air aooled, indoor construction only. 3500A must be derated to 3250A in outdoor construction.
3 Within the limitations stated in ANSI C37.04.1999.5.8
4 Exceeds ANDI C37.06-2000 preferred ratings.
Rated
Maximum
Voltage
(kV rms)
1
Rated
Voltage
Range
(k Factor)
Insulation Withstand Test Voltages
Rated
Continuous
Current at
60Hz
(Amps rms)
2
Rated
Short Circuit
at Maximum
kV
(kA rms)
3
Rated
Interrupting
Time
(cycles)
Rated
Maximum
Voltage
Divided by
K (kV rms)
Maximum
Symmetrical
Interrupting
Capability and
Short Time
Current (kA rms)
Closing and
Latching
Capability 2.7K
times Rated
Short Circuit
Current (kA Crest)
Low
Frequency
(kV rms)
Full Wave
Impulse
(kV Crest)
4.76
1.0
19
60
1200-4000
31.5
5 or 3
2
31.5
82
40
5 or 3
2
40
104
50
5 or 3
2
50
130
634
5
2
63
164
8.25
1.0
36
95
1200-4000
40
5 or 3
2
40
104
504
5 or 3
2
50
130
634
5
2
63
164
20
5 or 3
2
20
52
15
1.0
36
95
1200-4000
25
5 or 3
2
25
64
31.5
5 or 3
2
31.5
82
40
5 or 3
2
40
104
50
5 or 3
2
50
130
63
5
2
63
164
97
PV
Breaker
PV
Breaker
A 36 inch
extension
on the left
and right
side is
required
for breaker
lift truck
PV
Breaker
PV
Breaker
112
111
97
97
94
181
6
6
3
75
Aisle
Outdoor Protected Aisle
Outdoor Non-Walkin
3 8
PV System 27
®
& PV System 38
®
27-38 kV switchgear
PV System 27/38 delivers advanced vacuum circuit breaker technology
and uncompromising attention to every detail top to bottom, inside and
out. You receive superior performance and functional simplicity.
The metal-clad compartment construction protects via grounded compartments, conductor
insulation and live part shielding. When breakers are moved to the test position, grounded
aluminum shutters automatically cover both line and load stabs. Each circuit breaker cell
features closed-door racking, closed door mechanical trip and lockout features.
The silver-plated tubular copper main bus features fully rated epoxy insulation, and bolted
joints use fully qualified vinyl cover boots. Main bus support comes from cycloaliphatic epoxy
insulators. Custom designed clamping type stand-off insulators are molded of urethane for
tubular bus support. A continuous silver plated copper ground bus runs the entire length of
the assembly. To enhance safety, it can carry the rated short circuit current of the installed
circuit breakers for 2 seconds.
The structure allows trouble-free installation and operation. Rear compartment doors simplify
installation and inspection. There is ample cable space for either top or bottom entry, and rear
terminal areas are customized as needed. Vertical structures can be added later at either end. 9
PV System 27/38 circuit breakers are powerful, user friendly and reliable.
Controls and indicators are clearly identified, and the main springs can be
charged from the front as well. True closed-door racking adds a layer of
protection.
Hipoxy 2000
®
bus insulation delivers high
electrical characteristics, and it will not
chip, crack or flake.
The voltage transformer drawout assembly
provides a positive internal ground in the
disconnected position. Interlocks and an
insulated automatic shutter assembly further
enhance safety.
A 24-point, front-connected umbilical cord
between the breaker and the cubicle forms a
secondary control interface that allows both
external testing of the control circuitry and
positive visual indication of proper connection.
A patented, low-impact mechanism precisely
manages the delivery of operating speed
and force. Front accessibility simplifies
inspections, while fewer moving parts mini-
mize maintenance and maximize reliability.
Generous panel space and auxiliary com-
partments accommodate protective relays,
meters and instruments.
Surrounding the vacuum interrupter on
three sides, a housing (which doubles as a
phase insulator) makes removal and
inspection fast and simple. 10
PV System 27 &
PV System 38 Specifications
Standards
PV System 27 and PV System 38 switchgear is fully tested to all applicable ANSI, IEEE and NEMA standards.
Weight