ABB UniSec DY800, Инструкции по установке, обслуживанию и техническому обслуживанию

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UNISEC DY800 - E D. 4 - ACCORDING TO E- DISTRIBUZIONE SPECIFIC ATIONS
- INS TA LL ATI ON M A NUA L
5.3 Construction characteristics
5.3.1 Cubicles
UniSec DY800 switchgear is internal arc-proof and
suitable for secondary distribution requirements.
UniSec DY800 switchgear uses a multi-function
apparatus with vacuum circuit-breaker and SF
6
-
insulated 3-position disconnector (line, isolated and
earth).
The new integrated apparatus is made of: expoxy
resin for the top part where the vacuum interrupters
are housed, so as to guarantee the required degree
of insulation, and steel for the bottom part, thereby
providing metallic segregation and earthing
between the busbar compartment and cable
compartment.
This guarantees maximum safety for operators
working in the line compartment, even when the
main busbars are energized. Thanks to this technical
solution, panel classification is LSC2A-PM, in
accordance with IEC 62271-200.
All live parts of the integrated apparatus are SF
6
-
insulated to guarantee higher-level protection over
time against strongly agressive outdoor
environments.
The new technology featured by the integrated
apparatus possesses the following advantages:
• it is the only disconnector apparatus with 3
positions and circuit-breaker
• small size
• low amount of SF
6
used for insulation
• ease of use.
All the cubicles are internal arc-proof in accordance
with the provisions established by standard
IEC 62271-200.
The IAC classification of the various types,
restricted to authorized persons alone (class A),
complies with the 5 criteria established by the
standard.
The 3 types of UniSec DY800 cubicles are classified
in the following way:
• AF on the front side for DY800/116 AirPlus and
DY800/316 units
• AFL on the front side and on the two sides for
DY800/216 units.
The internal arc-proof characteristic is guaranteed with the panels
assembled, the doors closed and the screws tightened
Key
1 External taper
bushings (only for
DY800/216)
2 Eyebolts for lifting
3 Opening for gauging
temperature in
busbar compartment
(Thermovision)
4 Fixing plate for
troubleshooting
apparatus (RG)
5 Circuit-breaker and
disconnector control
box
6 Cubicle rating plate
7 Card holder
8 MV cable inspection
window
9 Opening for gauging
temperature in
cable compartment
(Thermovision)
10 MV door opening
handle
11 MV cable test panel
12 Earthing busbar
13 Lower structure for
MV cable side outlet
(only for DY800/216)
5.3.2 Protection classes
UniSec DY800 switchgear is designed with the
following protection classes:
• IP2X protection class inside the switchgear with
the door open
• IP3X protection class for the external enclosure.
—
5. Description