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3-5 > 3-5-2 Reclosers and Sectionalizers > Flashcards

3-5-2 Reclosers and Sectionalizers Flashcards

1
Q

A recloser is most often set to trip out at __?__ times its rating.

A

2

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2
Q

The part of a recloser that senses a fault is the __?__.

A

solenoid coil

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3
Q

A hydraulic recloser cannot interrupt nominal load current.

A

False

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4
Q

The acronym SCADA stands for __?__ and data acquisition.

A

Supervisory Control

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5
Q

The recloser which has a cold-load pickup feature is the __?__ recloser.

A

electronic

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6
Q

The electronic recloser can be closed manually if it does not have a low voltage supply.

A

False

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7
Q

Sectionalizers are not designed to interrupt __?__.

A

fault current

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8
Q

Sectionalizers normally have a non-reclose handle which can be used as a safety device when working in the area the sectionalizer protects.

A

False

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9
Q

Type H reclosers contain coils that vary in size from 5 to __?__ amps.

A

50

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10
Q

On type H reclosers, the fastest curve is the __?__ curve.

A

A

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11
Q

The two types of faults that will cause a recloser to operate are temporary and permanent.

A

True

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12
Q

The type L reclosers vary in size from __?__ to __?__ amps.

A

25 to 280

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13
Q

Most utilities and operating companies have standards of operation for their reclosers, setting them at __?__ fast operations and __?__ slow operations.

A

two, two

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14
Q

Single-phase reclosers are of the __?__ and __?__ -type.

A

H / L

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15
Q

A single-phase recloser rated at 14.4kV can be operated on an electrical system up to that voltage without making any electrical adjustments.

A

True

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16
Q

In order for a single-phase recloser to be set to operate only once instead going through its normal operating cycle, the non-reclosing handle must be __?__.

A

in the down position

17
Q

The recloser mechanism on a type H or L recloser is attached to the __?__ of the unit.

A

top

18
Q

The coil on type H or L reclosers is fixed by the manufacturer and cannot be changed out.

A

False

19
Q

Type D reclosers vary in size from __?__ to __?__ amps.

A

100 to 560

20
Q

A type D recloser rated at 14.4kV can be used at any voltage up to that rating.

A

False

21
Q

The type of single-phase recloser that requires a closing coil to close its main contact is the __?__ recloser.

A

D

22
Q

When a fault occurs on a line protected by a type __?__ recloser, the slow operations allow current to flow for 5 or 6 cycles in order to allow a fuse downstream of the recloser to open.

A

H

23
Q

The reclosing time for all types of reclosers is the same.

A

False

24
Q

A sectionalizer locks open during the interval when the back-up device is __?__.

A

open

3-5 (4 decks)

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