double side break switch –...
TRANSCRIPT
DOUBLE SIDE BREAK SWITCH – LD2
Robust & Reliable
The LD2 is a simple design using only the best available materials.
High-conductivity extruded aluminum terminals, extruded aluminum blades,
stainless steel pivot shaft, aluminum pivot housing.
All parts are fabricated from extruded aluminum or machined from solid billet
materials, such as 304 stainless steel and hard drawn copper.
NO CASTINGS
P D F D ATA S H E E T
TECHNICAL FEATURES
High strength hot dip galvanized steel;
Maintenance-free dry lubricant bearings;
Hardware on live parts are made of non-magnetic materials;
Current-carrying parts are made of high-conductivity extruded aluminum;
Contacts are made of silver plated hard drawncopper;
CURRENT-CARRYING PARTS
Main contacts are silver plated copper tosilver plated copper. The copper parts are tinplated when in contact with an alu- minumsurface. All tinned copper-to-aluminuminterfaces are cleaned of oxidation andpermanently sealed with an oxydationinhibitor. Self lubricating AgC contacts areavailable as an option
Contact fingers are self-resilient and do notrequire any additional springs to providecontact pressure. During a short- circuit, theelectrodynamic forces increase contactpressure.
OPTIONAL CONFIGURATION
The LD2 is available in W Configuration
2 types are available:
Substation switch with individual base frame;
Transmission switch on unitized base frame.
DIMENSIONS & TECHNICAL DATA
Dimensions based on ANSI TR insulators.
* IEC ratings and dimensions also available.
EN (KV) 38 48.3 72.5 123 145 170 245 300 362
BIL (kV) 200 250 350 550 650 750 900 1050 1050 1 175 1 300
A 1 100 1 250 1 500 1 800 2 000 2 400 2 600 3 000 3 400 4 000 4 000
B 700 801 958 1 542 1 771 1 822 2 279 2 736 2 699 3 049 3 092
C 1 600 1 750 2 000 2 300 2 500 2 900 3 100 3 500 3 900 4 500 4 500
In (A) 1 200 to
3150
1 200 to
3150
1 200 to
4000
1 200 to
4000
1 200 to
4000
1 200 to
4000
1 200 to
4000
1 200 to
4000
1 200 to
4000
1 200 to
4000
1 200 to
4000
Icc (kA
peak)
up to 163 up to 163 up to 182 up to 182 up to 182 up to 182 up to 182 up to 182 up to 182 up to 182 up to 182
Icc (kA
rms)
up to 63 up to 63 up to 70 up to 70 up to 70 up to 70 up to 70 up to 70 up to 70 up to 70 up to 70
For other ratings consult factory
OPTIONS
This brochure provides a brief introduction. EMSPEC reserves the right to make changes at any time, without notice.
Parallel or perpendicular grounding switch
Manual or motor operator
Mechanical, electromagnetic, electrical and trapped key interlock system
Arcing horns or high speed whips
Silver inlays or silver plating