002a Schneider Reclosers N-Series Recloser 1.0
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Automated Overhead N-Series Recloser now with ‘N-green’ option 2014
description
Reclosers N- Series
Transcript of 002a Schneider Reclosers N-Series Recloser 1.0
Automated Overhead
N-Series Reclosernow with ‘N-green’ option
2014
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Specification overview.
38 kV system voltage.
16 kA fault make capacity.
170 kV insulation level.
800 A continuous current.
N-Series Recloser
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● Vacuum interrupters● SF6 gas filled 316 grade stainless steel tank /
optional dry air ‘N-green’ option.● Surge arrester mounting brackets on tank.● Field fitting kit includes mounting bracket, bushing
boots and 400 A, 3 m cable kits.● Current Transformers (CTs) on all 3 phases built
into tank.● Capacitive Voltage Transformers (CVTs) moulded
into all 6 bushings.● Open and Close solenoids controlled from control
cubicle.● SF6 gas / dry air pressure monitoring and lockout.● Clearly visible external pointer.● Hookstick trip lever provided.
N-Series – Overview & Operation
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1 Tank2 SF6 insulating gas (dry air option)
3 Surge arrester bracket
4 HV cable tail
5 Bushing boot
6 Bushing
7 Central conductor
8 Capacitive Voltage Transformer
(CVT)
9 Current Transformer (CT)
10 Vacuum interrupter
11 Contacts
12 Flexible connection
N-Series – Cross Section
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N-Series – “N-green” option – 38 kV
Silicone rubber insulators
Identical Performances to the standard N-Series (N38)
SF6 replaced with dry air at same pressure
General construction of tank remains unchanged
Components remain in a dry environment (no corrosion)
Use of Silicone rubber parts
Provides additional insulation due to the absence of SF6
Environment friendly
N series “N-Green” option
= N38 - SF6 + Silicone Rubber Shields + Dry Air
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9 Current Transformer
N-Series – Current Transformer (CT)
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8 Capacitive Voltage Transformer
N-Series – Capacitive Voltage Transformer (CVT)
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10 Vacuum Interrupters
N-Series – Vacuum Interrupters
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13 Push rod
14 Close solenoid
15 Mechanism plate
16 Opening spring
17 Contact spring
18 Latch
19 Trip bar
20 Trip bar armature
21 Trip solenoid
22 Manual trip lever
23 SCEM
24 Control cable
N-Series – Trip & Close Mechanisms
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12 Flexible connection
13 Push rod
14 Close solenoid
15 Mechanism plate
16 Opening spring
17 Contact spring
18 Latch
19 Trip bar
20 Trip bar armature
21 Trip solenoid
22 Manual trip lever
Capacitor discharge in Close solenoid,
attracting the Mechanism Plate upward,
Push rods force contact close and
latch tongues rest on trip bar.
Contacts are held in closed positionby latch tongues.
N-Series – Close Mechanism
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12 Flexible connection
13 Push rod
14 Close solenoid
15 Mechanism plate
16 Opening spring
17 Contact spring
18 Latch
19 Trip bar
20 Trip bar armature
21 Trip solenoid
22 Manual trip lever
Capacitor discharge in Trip solenoid,
attracting the Trip bar armature,
causing the Trip bar to rotate and
releasing latch & mechanism plate.
Energy stored in the Open andcontact springs opens contacts.
N-Series – Trip Mechanism
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N-Series – Push Rods
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23 SCEM Card
N-Series SCEM Card (11a)
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23 SCEM Card
N-Series – SCEM 11a and Boss SCEM
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●An N Series recloser has a:● 1 side
And a ● 2 side
●Bushings on each side are identified as● U● V● W
●The six bushings are identified as● U1, V1, W1, U2, V2, W2
●The bushing identifications do not designate which phase is connected – this is configurable via software.
N-Series – Terminal Designation
This completes the presentation – Thank you for your attention.
2014
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