Pole mounted drop out sectionalizer
Medium voltage electronic sectionalizers AutoLink The ROCKWILL AutoLink sectionali…
Pole mounted drop out sectionalizer

Pole mounted drop out sectionalizer Pole mounted drop out sectionalizer

Detailed description

  • Description
  • Technical data
  • 12/24kV IEC/ANSI
  • 36/38kV IEC/ANSI
  • Installation

Pole mounted drop out sectionalizer

Medium voltage electronic sectionalizers AutoLink
Save time, effort and money!
The ROCKWILL AutoLink sectionalizer is an isolating device that automatically isolates the faulted section of the overhead network when a permanent fault occurs. If a temporary fault occurs, the AutoLink allows the upstream recloser or breaker to clear the fault without interrupting the circuit. Both AutoLink electronic sectionalizer and the wireless version of Autolink, AutoLink, are designed to improve reliability and service continuity.

Key benefits
Increased reliability and continuity of service, discriminating between temporary and permanent faults
Inventory reduction: one size fits all current ratings
Simple and quick installation without special tools
Reduces maintenance time: field configurable and resettable
Reduced operation costs

Key features

Only three voltage levels: 15, 27 and 38 kV

Nominal current and number of counts settable by user
No external power source required
AutoLink family: single-phase, loadbreak, mechanical three-phase and wireless three-phase

Independent of the time-current curve


Overview
The sectionalizer is applied in three phase power system with AC 50Hz and rated voltage 10-40.5kV. It is installed on distribution overhead line to isolate fault when corporated with recloser or circuit breaker. When fault occurs on the line, the faults current reaches or exceed preset threshold value, the sectionalizer can remember the tripping times of upstream recloser. When it reaches preset times, it drops down to trip automatically.
Sectionalizer can drop down to trip automatically on the condition as given below:
First, the faults current exceeds presetting pickup current. Second, the counting time reaches presetting value (1, 2, 3 or 4). Third, the circuit loses voltage and the current is lower than 300mA. The Sectionalizer will trip automatically if the aforesaid conditions occur simultaneously. If any of aforesaid conditions doesn’t occur, the Sectionalizer will not trip automatically.
This sectionalizer uses micro-computer and operating trip mechanism and does not require external auxiliary supply.


S/N

Name

Unit

RDK10-12/D315

RDK10-12/D200

RDK□-40.5/D200

1

Rated voltage

KV

12

12

40.5

2

Rated current

A

200

200

200

3

Rated frequency

Hz

50

50

50

4

Pickup current rating

A

8~400A

8~400A

8~400A

5

Short time withstand current(RMS)

KA

10

10

10

6

Short circuit withstandtime

s

1

1

1

7

Short time withstand current (PEAK)

KA

16

20

20

8

Counting time

time

1, 2, 3, 4

1, 2, 3, 4

1, 2, 3, 4

9

Max memory time

S

20

20

20

10

Max reset time

S

20

20

20

11

Permissible deviation of pick up current for memory rest time

%

±10

±10

±10

12

Opening time

ms

≤200

≤200

≤200

13

Main circuit resistance

μ Ω

≤400

≤400

≤400

14

Mechanic life

Time

500

500

500

15

Horizontal pulling force of terminal

N

250

250

250

16

Manual open moment

N·m

——

——

——

17

Manual open force

N

≤120

≤120

≤120

18

BIL(phase to ground)

KV

110

185

185

19

BIL(between gap)

KV

110

220

22

20

PFWV(phase to ground)

dry


KV

55

95

95

wet

45

80

80

21

PFWV(between gap)

dry


KV

55

110

110

wet

45

95

95

22

PFWV of control circuit

KV

2

2

2

23

Dirty proof grade

Class

24

Ice proof thickness

mm

≤7

≤1

≤1

25

Pickup current (four classes) and Counting time can be set

——

YES

YES

26

Mechanical interlocking for 3 phase devices and automatic reset

——

YES

YES


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