Electrical Apparatus Dan Melkey Power Line Supply “This workforce solution was funded by a grant awarded by the U.S. Department of Labor’s Employment and Training Administration. The solution was created by the grantee and does not necessarily reflect the official position of the U.S. Department of Labor. The Department of Labor makes no guarantees, warranties, or assurances of any kind, express or implied, with respect to such information, including any information on linked sites and including, but not limited to, accuracy of the information or its completeness, timeliness, usefulness, adequacy, continued availability, or ownership.” This work by Alpena Community College’s Sustainable Solutions for Northeast Michigan, a Department of Labor, TAACCCT funded project, is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit

Types of Reclosers

RECLOSER CONTROL Hydraulic Vs Electronic

HYDRAULIC RECLOSER OPERATION

Fast Curve

Contacts Reclosing

Delayed Curve

Lock Out

Type H Maintenance: c/powersystems/resources/library/280_ReclosersCo ntrols/S pdf Type L Maintenance: c/powersystems/resources/library/280_ReclosersCo ntrols/S pdf

ELETRONIC RECLOSERS Recloser + Control

INTERRUPTER MEDIUM Oil Vs Vacuum

Oil Interruption

Vacuum Interruption

SINGLE PHASE vs THREE PHASE vs TRIPLE/SINGLE

SINGLE PHASE Can be Hydraulic or Electronic

THREE PHASE (Gang Operated)

Three-Phase TRIPLE/SINGLE

Mode A: Three phase trip, three phase lockout Mode B: Single phase trip, three phase lockout Mode C: Single phase trip, single phase lockout Triple-Single

RECLOSER DIELECTRIC INSULATION Oil Vs Air Vs Solid Vs SF6

Oil Dielectric

WE/VWE Closing Coil Recloser requires voltage from source side for closing Closing coil connected between bushings 3 & 5 High voltage closing vs low voltage closing

Air Dielectric

Solid Dielectric

SF6 Dielectric

Selection Factors System Voltage Maximum Fault Current Maximum Load Current Minimum Fault Current Single Phase or Three Phase

Operation In single/single mode, pulling down one yellow handle trips and locks out just that unit. To close, push yellow handle up then hit close button in control. Non-reclosing will cause just a faulted phase(s) to lockout. HLT causes all phases to lockout if there is a fault.

Installation Control runs off AC which needs to be brought into the F6 control. Control has a 24V battery for backup. Ground the F6 control cabinet.

If Recloser Fails to Respond Check “ALARM” functionality for problem information Inspect for closing voltage Check control cable connections Verify yellow handle is up

Substation Equipment

QUESTIONS ???