Solid Dielectric Switch with Visible Break - G&W Electric

Solid Dielectric Switch with Visible Break
G&W Trident-S solid dielectric two way switches now include
an innovative visible break feature built into the switch, which
eliminates the need to remove elbows or use externally
mounted linkage systems to provide a visible open. This
makes the Trident-S with SafeVu ideal for subsurface
applications where space and safety practices prevent the
linemen from entering the vault to perform these functions.
Oil Fuse Cutout Replacement – Eliminate the need to
replace fuse links or maintain insulating oil. The Trident-S
with SafeVu does not require any maintenance and
features compact size, lightweight, integral visible break,
and fault interrupting capability. It is the perfect solution to
replace obsolete oil fuse cutouts.
OPERATION
The visible break is achieved with a blade type switch
incorporated within the solid dielectric module. The blade
is in series with the vacuum interrupter and provides a clear
visible open. The blade is easily visible through a viewing
window molded as an integral part of each module. If the
application calls for a resettable fault interrupter, the Trident
with SafeVu can be supplied with integral current transformers
and a self-powered G&W overcurrent protection control.
The CTs and CT leads are molded within the solid dielectric
module, protecting them from the environmental conditions
of subsurface vaults. The CTs are dual ratio and preset for
either 500:1 or 1000:1. The G&W Type 7 control is particularly
well suited for subsurface applications, as it is housed within
the Trident mechanism housing.
FEATURES
Operator Safety – All load and fault currents are safely
interrupted inside vacuum interrupters molded within
solid epoxy insulation. The entire module is coated with
a semi-conductive layer of epoxy, providing a completely
deadfront device, enhancing operator safety. The switch
features two mechanical interlocks, external and internal,
for safe operation. The external mechanical interlock
ensures the switch is operated in the correct sequence.
The internal mechanical interlock requires the vacuum
interrupter to break all load and fault currents prior to the
operation of the visible break switch.
Submersibility – G&W Trident with SafeVu has been
tested to IP68 standards to withstand a 10 foot head of
water pressure for 10 days. The switch will remain fully
operable after withstanding prolonged submersion at
depths of up to 10 feet (3m).
with SafeVu
p Trident with visible break.
®
Compact, Lightweight Construction - The Trident-S
with SafeVu features a small footprint and is designed to fit
through a 27” manhole opening. The small footprint allows
installation inside existing subsurface vaults. The switch
is much lighter than comparable oil insulated devices,
making it easier and safer to install, especially in the tight
confines of a subsurface vault.
p Viewing windows are molded into the epoxy modules,
providing a clear view of the visible break.

RATINgS
The switch is designed, tested and built per IEEE C37.74 for
load break switching, IEEE C37.60 for fault interrupting, IEEE
386 for bushing specification, and IEC 60529 for environmental
protection rating. Certified test reports are available.
Max System Voltage (kV) 15.5
G&W ELECTRIC PAGE 2
BIL (kV) 95
Continuous Current (A) 630
Peak, asym (kA) 32
Momentary Current, RMS, asym (kA) 20
Making Current, RMS, asym (kA) 20
Interrupting Rating, RMS, sym (kA) 12.5
Short Circuit Current, kA sym, 1
second
12.5
AC Withstand, RMS, Dry, 1 minute (kV) 35
DC Withstand, 15 minutes (kV) 53
Mechanical Operations 2,000
Fault Interrupting Duty per IEEE
C37.60
Visible
Break
Switch
Closed
Submersibility Rating per IP68
Viewing
Window
200A
Deepwell
Bushings
44 operations
at 15-20% rated
interrupting current
56 operations
at 45-55% rated
interrupting current
16 operations at
90-100% rated
interrupting current
10 days under a
10 foot head of
water
31.4”
(797mm)
5.4”
(137mm)
8.6”
(218mm)
Dimensions are approximate.
Approximate weight: 200 lb.
Visible
Break
Switch
Open
24.2”
(614mm)
7.5”
(191mm)
17.3”
(439mm)
Visible
Break
Switch
Vacuum
Bottle

OPTIONS
g&W OvERcURRENT cONTROlS
The overcurrent control monitors the current and sends a
trip signal which opens the vacuum interrupters and interrupts
the fault current. G&W controls are self-powered from
the current transformers located inside the solid dielectric
module. Controls can be equipped to accept a trip input from
a relay or communication device. G&W also offers other
controls, such as SEL relays, depending on the application.
The standard control enclosure for pad mount applications
is fiberglass NEMA 4X (IP56) rated. An optional NEMA 6P
(IP67) rated enclosure is available for applications where
the possibility of flooding or short term submersion is
possible. For vault and subsurface applications, G&W
recommends the Type 7 control. The Type 7 is mounted
within the switch’s mechanism housing and has an IP68
rating for long term submersion.
g&W cONTROl OPTIONS
Type 2 controls provide a user friendly interface for quick
and easy programming. Trip level selections can be made
under load or no-load conditions with current ranges in 12
selectable levels. Two ranges of minimum trip settings are
available, 15 to 300 amps and 30 to 600 amps. Each unit is
pre-programmed with 30 Time Current Characteristic (TCC)
curves. The curve selection can be set or changed at any
time.
An 8 pole dip switch allows the user to choose the TCC
curve that best matches their specific coordination requirements.
The control can be factory preset to meet the
user’s requirements. As protection or coordination requirements
change, settings can easily be changed in the field.
Pressing the manual trip button when the control is powered
up trips all three phases of the vacuum interrupter. Each
control also includes “Last Cause of Trip” LEDs. These
LEDs indicate which phase experienced an overcurrent
condition, or that
the control was
given an external
or manual trip
command.
Type 2 controls
offer the following
features:
- Three phase
protection
- Minimum trip
set for all three p Type 2 control
phases with one
selector switch
- Adjustable phase time delay
- Ground fault (phase imbalance) with separate adjustable
time delay selector switch for protection of large three
phase motors or transformers. The ground trip level is
represented as a percent of the minimum trip level.
- Instantaneous trip and inrush restraint features
p Type 3 control
Type 3 and 4 controls provide advanced protection
functions. There are two versions of these controls, each
with different protection elements.
The EZset version includes:
- Phase Minimum Trip
- Phase Time Delay
- Phase Instantaneous
- Phase Minimum Response
- Phase Inrush (Cold Load Pickup) Restraint
- Ground Fault (Phase Imbalance) Minimum Trip with a
Separate Curve
- 30 Phase/Ground Fault Curves
The Plus version includes all of the above, and in
addition includes:
- Ground Fault Time Delay
- Ground Fault Instantaneous
- Ground Fault Minimum Response
- Ground Fault Inrush (Cold Load Pickup) Restraint
- 60 Phase/ Ground Fault Curves including 5 User
Creatable Curves
- Maintenance Setting Group
The Type 3 and 4 controls record the most recent 16
Cause of Trip Events. The Type 3 includes a display and
keypad for entering programming parameters and viewing
the Cause of Trip Events. The Type 3 Plus, and Type 4
EZset and Plus utilize a notebook computer programming
kit to enter the settings. The notebook computer programming
kit can also be used to download and store the
settings and Cause of Trip Events.
Type 7 controls provide
the same features and
options as the Type 3 and
4 controls, except that
the controls are mounted
within the switch mechanism
housing, eliminating
the need for a separate
control enclosure and
associated cabling. The
control is programmed p Type 7 control programming port
using a notebook computer.
A notebook computer programming kit is available.
G&W ELECTRIC PAGE 3

OPTIONS cONTINUEd
PROgRAmmINg KIT
For Type 3, Type 4 or Type 7
Provides software and cable connection to a notebook
computer for programming or retrieving fault interrupter
control information. The cable connects the USB port of
the computer to the control box (Type 3 or 4) or mechanism
housing (Type 7).
Catalog Number for Type 3, Type 4, Type 7: LPK7-VICSS
p Programming Kit
OThER cOmPATIblE RElAyS FOR OvERcURRENT
PROTEcTION
Various other relays can be provided with Trident switchgear
including Schweitzer’s model SEL Falcon, SEL-351R,
SEL-651R, SEL-501, SEL-551, SEL-351S and SEL-751A.
JUNcTION bOx
For auxiliary contacts and remote power/remote trip connections.
Includes NEMA 4X (IP56) enclosure with terminal strip
connections.
p Junction Box
G&W ELECTRIC PAGE 4
gROUNd lUgS
Bronze, eyebolt style ground lugs are available for 4/0
maximum conductor cable.
p Ground lug
FRAmES
Bolted, galvanized mounting frames are available for
vertical mounting of vault style switches providing a 24”
distance from the ground to the center of the bottom bushing.
Other size frames are available.
Consult your G&W representative for availability.
bUShINgS
Bushings shall be tested to IEEE 386. The switch is available
with either 600A apparatus bushings or 200A deep
well bushings. 600A apparatus bushings are suitable for
use with T-body elbows. 200A deep well bushings can be
used with 200A load break inserts and elbows.
AUxIlIARy cONTAcTS
Auxiliary contacts are mounted within the mechanism
housing to provide remote indication of the vacuum
interrupter contact position. One normally open and one
normally closed Form C contact is provided.

®
hOW TO ORdER - TRIdENT WITh SAFEvU SWITchgEAR FOR lOAd bREAK APPlIcATIONS
Fill in the spaces using the tables below to build your G&W catalog number:
1
Mounting
Configuration*
Voltage Class
Number of Phases
Description Code
Padmount, front access, vertical mount P
Padmount, front access, horizontal mount H
Dry Vault (equipment room) with
non-submersible electronics
Subsurface style with submersible electronics W
2
3
4
_ A 1 3 - SV L _ _
1 2 3 4 5 6 7 8
Description Code
Bushings front; side mounted handle A
kV Code
15 1
Phase Code
Three 3
V
5
6
7
8
Switch Style
Controls
Description Code
Trident-S with SafeVu SV
Description Code
Load break switch L
Pre-engineered control; Relay, IED, RTU E
Options
Applicable One-line
Customer supplied control W
Description Code
No options 0
Auxiliary contacts
(vacuum load break switch only)
Custom engineered 4
Bushing Arrangement
Visible
Break switch
Vacuum
Load Break
switch
Description Code
200A 2
600A 6
G&W ELECTRIC PAGE 5
1

®
hOW TO ORdER - TRIdENT WITh SAFEvU SWITchgEAR FOR FAUlT INTERRUPTINg APPlIcATIONS
Fill in the spaces using the tables below to build your G&W catalog number:
1
Mounting 6 Controls
Configuration*
Voltage Class
Number of Phases
Description Code
Bushings front; side mounted handle A
Switch Style
Description Code
Padmount, front access, vertical mount P
Padmount, front access, horizontal mount H
Dry Vault (equipment room) with
non-submersible electronics
Subsurface style with submersible electronics W
2
3
4
5
_ A 1 3 - SV _ _
1 2 3 4 5 6 7 8
kV Code
15 1
Phase Code
Three 3
Description Code
Trident-S with SafeVu SV
V
Description Code
Type 2 2
Type 3 EZSet 3E
Type 3 Plus 3P
Type 4 EZSet 4E
Type 4 Plus 4P
Type 7 EZSet 7E
Type 7 Plus 7P
Pre-engineered control; Relay, IED, RTU E
Provisions for future use (includes junction box
with CT and trip connections)
7
Options
Description Code
No options 0
Auxiliary contacts (vacuum fault interrupter only) 1
8
Applicable One-line
Custom engineered 4
Bushing Arrangement
Description Code
200A 2
600A 6
G&W Electric Company • 305 W. Crossroads Pkwy • Bolingbrook, IL 60440 USA • 708.388.5010 • Fax 708.388.0755 • gwelec.com
Catalog TSV, October 2012
)
Visible
Break switch
Vacuum
Fault
Interrupter
P