Solid Dielectric Switch with Visible Break
• Operator safety
• Load break or fault interrupting
•
•
•
•
•
•
•
applications
Clear visible break of all three phases
Solid dielectric insulation
Compact, lightweight construction
Fully submersible
Ideal replacements for oil fuse cutouts
Integral self-powered overcurrent
protection available
Resettable spring operated mechanism
Catalog TSV-13
Trident with SafeVu
Trident 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 with SafeVu™ ideal for subsurface
applications where space and safety practices prevent the
linemen from entering the vault to perform these functions.
confines of a subsurface vault. The switch can be mounted
in any orientation to ease cable training and operation.
Oil Fuse Cutout Replacement – Eliminate the need to
replace fuse links or maintain insulating oil. The Trident
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 (CTs) and a
self-powered G&W vacuum interrupter 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 semiconductive 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 – Trident with SafeVu has been tested
to IP68 standards to withstand a 20 foot head of water
pressure for 20 days. The switch will remain fully operable
after withstanding prolonged submersion at depths of up
to 20 feet (3m).
Compact, Lightweight Construction - The Trident 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
G&W ELECTRIC
PAGE 2
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
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
44 operations
at 15-20% rated
interrupting current
Fault Interrupting Duty per IEEE
C37.60
56 operations
at 45-55% rated
interrupting current
16 operations at
90-100% rated
interrupting current
Submersibility Rating per IP68
20 days under a
20 foot head of
water
Dimensions
25.9”
(658mm)
33.8”
(861mm)
23.7”
(603mm)
Interrupter
open/
closed
indication
42.6”
(1081mm)
Max
handle
level
8.6”
(219mm)
Parking
stand
Dimensions are approximate.
Approximate weight: 200 lb.
5.4”
(137mm)
Front View
7.5”
(191mm)
Side View
Visible Break Operation
Visible Break Switch in Closed Position
Visible Break Switch in Open Position
Visible break
switch handle
Lifting provision
Interrupter
handle
Mechanism
housing
Viewing
window
600A
Deadbreak
Apparatus
Bushings
Visible
break
switch
Solid dielectric
module
Vacuum
bottle
G&W ELECTRIC
PAGE 3
Options
G&W Vacuum Interrupter Controls
The control monitors the current, 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 padmount applications
is fiberglass NEMA 4X (IP56) rated. 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.
Type 2 controls offer the following features:
-- Three phase protection
- Minimum trip setting for all three phases with one selector switch
- Adjustable phase time delay
- Ground fault (phase imbalance) for protection of large three phase motors or transformers. The ground trip
setting is represented as a percent of the minimum trip setting.
- Instantaneous trip and inrush restraint features
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 which 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 what caused the control to issue a
trip command - an over current condition, Ground Fault,
Instantaneous, or an external or manual trip command.
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 Curve selectors
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
p Type 2 control
G&W ELECTRIC
PAGE 4
The Type 3 and 4 controls record the 16 most recent Cause
of Trip Events. The Type 3 EZset 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 laptop programming kit to enter the
settings. The laptop programming kit can also be used to
download and store the settings and Cause of Trip Events.
Type 7 controls provide the same protection features and
options as the Type 3 and 4 controls, except that the controls are mounted within the switch mechanism housing.
This eliminates the need for a separate control enclosure
and associated cabling. The control is programmed using
a laptop computer. A laptop programming kit is available.
Junction Box
For auxiliary contacts and remote power/remote trip connections. Includes NEMA 4X (IP56) enclosure with terminal strip
connections.
p Junction Box
p Type 7 control programming port
Ground Lugs
Bronze, eyebolt style ground lugs are available for 4/0
maximum conductor cable.
Programming Kit
For Type 3, Type 4, or Type 7
Provides software and cable connection to a laptop computer for programming or retrieving vacuum interrupter
control information. The cable connects the USB port of
the computer to the Vacuum Interrupter Control (Type 3
or 4) or mechanism housing (Type 7).
Catalog Number for Type 3, Type 4, Type 7: LPK7-VICSS
Frames
p Ground lug
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
p Programming Kit
Other Compatible Relays
Overcurrent Protection
for
Various other relays can be provided with Trident switchgear including Schweitzer’s model SEL-501, SEL-551,
SEL-351S and SEL-751A.
Bushings shall be tested to IEEE 386. The switch is available with either 600A deadbreak apparatus bushings or
200A bushing wells. 600A deadbreak apparatus bushings
are suitable for use with T-body elbows. 200A bushing
wells 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.
G&W ELECTRIC
PAGE 5
Ordering Information
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:
Applicable One-line
_ A 1 3 - SV L _ _
1
3
2
4
5
6
7
Visible
Break switch
Vacuum
Load Break
switch
8
1 Mounting
5
Switch Style
Description
Code
Description
Code
Padmount, front access, vertical mount
P
Trident-S with SafeVu
SV
Padmount, front access, horizontal mount
H
Dry Vault (equipment room) with
non-submersible electronics
V
Subsurface style with submersible electronics
W
2
3
6 Controls
Configuration
Description
Code
Bushings front; side mounted handle
A
Voltage Class
kV
Code
15
1
4 Number of Phases
7
Description
Code
Load break switch
L
Pre-engineered control; Relay, IED, RTU
E
Customer supplied control
W
Options
Description
Code
No options
0
Auxiliary contacts
(vacuum load break switch only)
1
Custom engineered
4
8 Bushing Arrangement
Phase
Code
Description
Code
Three
3
200A Bushing Wells
2
600A Deadbreak Apparatus Bushings
6
G&W ELECTRIC
PAGE 6
®
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:
Applicable One-line
_ A 1 3 - SV
1
2
3
4
__
6
5
7
Visible
Break switch
8
)
Vacuum
Fault
Interrupter
6 Controls
1 Mounting
Description
Code
Description
Code
Padmount, front access, vertical mount
P
Type 2
2
Padmount, front access, horizontal mount
H
Type 3 EZSet
3E
Dry Vault (equipment room) with
non-submersible electronics
Type 3 Plus
3P
V
Type 4 EZSet
4E
Subsurface style with submersible electronics
W
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)
P
2
3
Configuration
Description
Code
Bushings front; side mounted handle
A
7 Options
Voltage Class
kV
Code
Description
Code
15
1
No options
0
Auxiliary contacts (vacuum fault interrupter only)
1
Custom engineered
4
4 Number of Phases
5
Phase
Code
Three
3
8 Bushing Arrangement
Switch Style
Description
Code
Trident-S with SafeVu
SV
Description
Code
200A Bushing Wells
2
600A Deadbreak Apparatus Bushings
6
G&W ELECTRIC
PAGE 7
G&W offers a complete line of
smart distribution voltage
equipment including:
Lazer® Automation
•
•
•
•
Multiple levels of protection
Open, flexible communication
Pre-engineered, factory tested
Transfer, loop, and network applications
Solid Dielectric Switchgear
•
•
•
•
•
To 38kV, 16kA interrupting
Submersible vault and padmount
Smart Grid / Lazer® solutions
Single phase and three phase
Integral Visible Break Designs
SF6 Insulated Switchgear
•
•
•
•
To 38kV, 25kA interrupting
Submersible vault and padmount
Smart Grid / Lazer® solutions
Load and fault interrupting
Solid Dielectric Reclosers
•
•
•
•
•
•
To 38kV, 12.5kA interrupting
To 27kV, 16kA interrupting
Overhead, substation and padmount
Smart Grid / Lazer® solutions
Single phase and three phase
Six voltage sensing available
G&W Electric Company
305 W. Crossroads Pkwy
Bolingbrook, IL 60440-4938 USA
Tel 708.388.5010 Fax 708.388.0755
www.gwelec.com
ISO 9001:2008 Certified
ISO 14001:2004 Certified
Catalog TSV-13
July, 2013