FAULT CLEAR®
TRIPLE-SINGLE AUTO RECLOSER
Solid Dielectric
27kV・800A

VBN20-A3-Y
SeriesINSTRUCTION MANUAL■ This instruction manual describes the operation and maintenancefor the correct and safe use of FAULT CLEAR® Triple-single Auto
Recloser. Please thoroughly read and understand the information
contained in this instruction manual before operating.
■ After reading, keep this instruction manual for future reference.

February 2024
No. 01185i

CONTENTS
1.

PURPOSE ................................................................................................................................................. 22.

SAFETY PRECAUTIONS ........................................................................................................................... 2

3.

WARRANTY PERIOD AND COVERAGE ................................................................................................... 3

4.

SCOPE OF APPLICATION ........................................................................................................................ 3
4.1.
4.2.
4.3.

STANDARDS ................................................................................................................................................ 3
SERVICE CONDITION.................................................................................................................................... 3
CONTROLLER COMPATIBILITY ....................................................................................................................... 3

PRODUCT OVERVIEW .............................................................................................................................. 4

5.

5.1. MODEL / PART NUMBER COMPARISON........................................................................................................... 4
5.2. NAME OF PARTS .......................................................................................................................................... 55.3. SPECIFICATIONS ......................................................................................................................................... 6
5.3.1.
Ratings .............................................................................................................................................. 6
5.3.2.
Sensors ............................................................................................................................................. 6
5.3.3.
Input & output .................................................................................................................................... 6
5.4. CIRCUIT DIAGRAM ....................................................................................................................................... 7
INSTALLATION.......................................................................................................................................... 8

6.

6.1. UNPACKING AND HANDLING .......................................................................................................................... 8
6.1.1.
Packing and scope of supply ............................................................................................................ 8
6.1.2.
Unpacking ......................................................................................................................................... 9
6.1.3.
Handling (Lifting) ............................................................................................................................... 9
6.2. CHECK PRIOR TO INSTALLATION ................................................................................................................... 9
6.2.1.
Product check ................................................................................................................................... 9
6.2.2.
Accessory check ............................................................................................................................... 96.3. MOUNTING ON THE POLE ........................................................................................................................... 10
6.3.1.
Terminal pad/connector attachment ................................................................................................ 10
6.3.2.
Lightning arrester mounting ............................................................................................................ 126.3.3.
Lifting............................................................................................................................................... 14
6.3.4.
Pole mounting ................................................................................................................................. 15
6.3.5.
Grounding ....................................................................................................................................... 20
CONNECT TO CONTROLLER ................................................................................................................ 21

7.

7.1. CONNECTOR CONFIGURATION .................................................................................................................... 21
7.1.1.
Pin assignment ............................................................................................................................... 21
7.1.2.
Precaution when connecting ........................................................................................................... 21
7.1.3.
Control cable connection ................................................................................................................ 22
7.2. RATIO CORRECTION FACTORS (RCF) FOR VOLTAGE SENSORS .................................................................... 23
OPERATION ............................................................................................................................................ 24

8.

8.1. OPERATION BY CONTROLLER ..................................................................................................................... 24
8.1.1.
Check prior to the operation by controller ....................................................................................... 24
8.1.2.
Operation by controller .................................................................................................................... 25
8.2. OPERATION OF FAULT CLEAR® BY OPERATING HANDLE ............................................................................ 25
MAINTENANCE ....................................................................................................................................... 26

9.

9.1. APPEARANCE CHECK................................................................................................................................. 26
9.2. FUNCTIONALITY CHECK ............................................................................................................................. 26
9.2.1.
Controller......................................................................................................................................... 26
9.2.2.
FAULT CLEAR® Recloser ............................................................................................................... 26
10.

AFTER SERVICE ................................................................................................................................. 27

1

1. Purpose
This Triple-single Solid Dielectric Auto Recloser (called the “FAULT CLEAR®”) shall be installed and usedin the system voltage up to AC 27kV overhead power distribution lines.
•
Open and close operation by controller•
Open operation by operating handle
FAULT CLEAR® shall have the compatibility with SEL-651R-2 of Schweitzer Engineering Laboratories,
Inc. Operation and function of SEL-651R-2 shall be referred the instruction manual supplied by
Schweitzer Engineering Laboratories, Inc.

2. Safety precautions
•
•
•
•
•

For safe use, the FAULT CLEAR® shall be handled and operated by the personnel who have theadequate knowledge and skills.
FAULT CLEAR® shall be connected to the earth by the grounding terminals. Grounding shall be
carried out according to the regulation in the area of installation.
Thoroughly read and understand the information contained in this instruction manual and correctly
use the FAULT CLEAR®.
Use the FAULT CLEAR® after acquiring proficiency in the knowledge of this equipment, safety
information, and safety precautions. After reading, keep this instruction manual for future reference.
Safety precaution levels are classified as “DANGER” and “CAUTION”.

DANGER

If operation is incorrect, a dangerous situation may occur, resulting in deathor serious injury.

CAUTION

If operation is incorrect, a dangerous situation may occur, resulting inmoderate impairment or minor injury or physical damage to the equipment.

CAUTION may cause serious consequences depending on the situation.
However, items in
Items in both DANGER and CAUTION are very important.

DANGER◼ Electric shock hazard:• Do not touch the high voltage energized part.
• Properly connect the FAULT CLEAR® to the earth depending on the ground condition of
installation site.
• Make sure to check that no voltage is applied to low and high voltage parts prior to starting
any work with the FAULT CLEAR®.
◼ Fall and injury hazard:• Do not stand or sit on the FAULT CLEAR® itself nor mounting bracket.
• Make sure to fix the ropes on the lifting lugs firmly and lift the FAULT CLEAR® slowly bykeeping the balance.

CAUTION◼ Fall and injury hazard:• Never carry or operate the FAULT CLEAR® upside down.
◼ Electric shock and injury hazard:• Always wear rubber insulated gloves/personal protective equipment when handling andoperating.
◼ Electric shock, injury, and fire hazard:• Never disassemble nor modify the FAULT CLEAR®.
◼ Fire and injury hazard:• Never use when any abnormality can be identified.
• Dispose as an industrial waste.
◼ Damage hazard:• Never energize the FAULT CLEAR® without control cable and controller connected.
• Do not disconnect control cable while the FAULT CLEAR® is energized.
23. Warranty period and coverage
The warranty period of the FAULT CLEAR® shall be one year after the date of shipment. However, if
another warranty period is specified in the contract, the period of the contract shall be applied.
Manufacturer will repair the product free of charge, provided that such degradation is determined to be
due to defects in materials or workmanship under normal operation within the warranty period.
Warranty coverage does not apply when:(1) the failure is caused by user’s negligence and force majeure,(2) the failure is caused by the modification and service by anyone other than the manufacturer orthe authorized personnel,(3) the failure is caused by operation, connection, or assembling other than the procedures or
methods mentioned in this instruction manual, and(4) the failure is caused by using accessories or parts other than specified by manufacturer.
This warranty is limited to the coverage of only the delivered product itself and does not extend to thecompensation for consequential damage that has occurred by the supplied product.

4. Scope of application
4.1.

Standards

FAULT CLEAR® complies the following standard.
IEC 62271-111(Ed.2.0) / IEEE Std C37.60-2012
High-voltage switchgear and controlgear - Part111: Automatic circuit reclosers and faultinterrupters for alternating current systems up to 38 kV
Reference standard:
IEC 62271-1 Ed.2.0 b: 2007
High-voltage switchgear and controlgear - Part 1: Common specifications for alternating
current switchgear and controlgear

4.2.

Service condition
FAULT CLEAR® can be used under the environment indicated in the following table and the normal
operation environment specified in IEEE C37.60 / IEC62271-111.
In case of using the FAULT CLEAR® under conditions other than indicated below, please consult the
manufacturer.
Site and Service conditions

4.3.

Installation site

Outdoor

Altitude3,280ft (1,000m) or lessAmbient temperature-40 to +140°F (-40 to +60°C)

Pollution level (IEC 815)Class IV (Very heavy)Controller compatibility

FAULT CLEAR® is compatible with the following Schweitzer Engineering Laboratories’ controller.
Model
SEL-651R-2
Specified configuration
Control cable interface

32-pin3

5. Product overview
5.1.

Model / Part number comparison
Model / Part number

Example of frame structure with lightning arresters mounted

VBN20-A3-YQ1

Back frame

VBN20-A3-YQ2

Alley-arm brace

4

5.2.

Name of parts

Bushing (Body: Epoxy resin; Shed: Silicon)
Sensors (built-in 3 Current transformers / 6 Voltage sensors)
Verticalbushings(Source side)

Phase 1

Phase 2

Conductor to main circuit
Lifting lug(4 pieces)

Phase 3

Horizontal
bushings(Load side)

Operating handle

Metal connector(to SEL-651R-2)

Junction box

Position indicator

Hole for
Grounding terminal

Junction box

Operating handle

Metal connector(to SEL-651R-2)
Position indicator

Weight5

VBN20-A3-YQ1

VBN20-A3-YQ2

518lbs (235kg)

609lbs (276kg)

5.3.
5.3.1.

Specifications
Ratings
Item
Rated voltage
Rated current
Eight(8) hour overload current
Rated frequency
Rated short-time withstand current
Rated short-circuit making current
Rated duration of short-circuit

Rating
27kV
800A
960A
60Hz
16kA, r.m.s.
41.6kA, peak3s
Dry
60kV, 1 min
Wet
50kV, 10 s
150kV
25A
5A
32.95 in / 837 mm or moreClass IV: Very heavy (IEC815)
O-0.5s-CO-2s-CO-5s-CO
38 ms ±10 ms
14 ms ±5 ms
116 operations
10,000 operations

Power frequency withstand voltage
Lightning impulse withstand voltage
Rated cable charging current
Rated line charging current
Creepage distance / Pollution level
Operating sequence
Closing time
Opening time
Duty cycle
Mechanical endurance

5.3.2.

Sensors
Item
CT for current measurement
Rated ratio
Accuracy
Capacitive voltage sensor (VS)Rated ratio
Accuracy

5.3.3.

Rating1,000:1±1.0%
10,000:1±1.0%

Input & output
Description

DetailInput
Actuator (+)
Actuator (-)
OutputRECLOSER “Close” status
RECLOSER “Open” status”Open” Lockout status

Coil voltage: 155 +5 / -3 Vdc

Dry contact
Dry contact
Dry contact

Current measurement
Phase 1, 2 and 3

Analog signal output
Each phase of horizontal bushings, total 3 units

Voltage measurement
Phase 1, 2 and 3

Analog signal output
Each phase of vertical & horizontal bushings, total 6
units

FAULT CLEAR® shall be controlled by the SEL-651R-2 manufactured by Schweitzer Engineering
Laboratories, Inc. with a 32-pin interface control cable.

6

5.4.

Circuit diagram

Verticalbushing

Horizontal
bushing®

The polarity of CTs equipped in the FAULT CLEAR is subtractive;
therefore, when the main circuit current flows from the vertical sidebushing to the horizontal side bushing, CT output flows in the direction
shown by the red arrows in the wiring diagram above.
Confirm the setting of “CTPOL CT Polarity” under “Global > Current andVoltage Connection Settings” in SEL-651R-2 as “NEG” as shown below.

76. Installation
6.1.

Unpacking and handling

6.1.1.

Packing and scope of supply
FAULT CLEAR® is packed in a reinforced corrugated cardboard box as below.

<Front view><Side view>

PP strapping bands

If you cut the band here, the band may
spread out forcefully and cause injury.

PP strapping band

CAUTION・ Make sure no one is around when you cut the PP strapping bands to unpack the box. PP
strapping bands may spread out forcefully. Do not stand where the bands may spread.
Confirm the following components are enclosed in the package.
① VBN20-A3-YQ1
Components
Single-phase recloser
1) FAULT CLEAR®
Center pole frame2) Instruction manual3) FAULT CLEAR® - Voltage ratio correction factors4) FAULT CLEAR® Routine Test Report5) Phase identification labels: 1, 2, and 3

Quantity
311
1
1
1 each② VBN20-A3-YQ2

1)

2)
3)
4)
5)

FAULT CLEAR®

Components
Single-phase recloser
Alley arm main frame
Back frame (Both direction in Alley arm can beinstalled )Alley-arm brace
Pre-lubricated stainless bolts (UNC1/2-13×1-3/4)

Instruction manual
FAULT CLEAR® - Voltage ratio correction factors
FAULT CLEAR® Routine Test Report
Phase identification labels: 1, 2, and 3

Quantity
3
1
1
1
1 set
1
1
1
1 eachPhase identification labels can be changed to A, B, and C depending on customer request.
FigurePhase
Size
Material
A, B, and C(for each phase)(for each phase)(for aluminum frame)

1, 2, and 3
1, 2, and 3

4.7” x 4.7”(120mm x 120mm)
0.1mm×3” x 3”(75mm x 75mm)
0.1mm×1.2” x 1.2”(30mm x 30mm)
0.1mm×SUS304-CP
SUS304-CP
SUS304-CP
Labeling image

86.1.2.

Unpacking・ Do not overturn or make a strong impact when opening the package.
・ Make sure to check the type and ratings listed on the nameplate are correct for what youordered.

Nameplate as three-phase
Q1…Center-pole
Q2…Alley-arm

Nameplate as single-phase

Handling (Lifting)・ Do not hold bushings but mounting bracket (aluminum frame) when supporting the FAULT
CLEAR® by hands.
CAUTION ・ When moving the FAULT CLEAR® by forklift, make sure to use the pallet. Refer 6.3.3 for lifting
the FAULT CLEAR®.
6.1.3.

Bushing

6.2.

Check prior to installation

6.2.1.

Product check
Confirm the product supplied is the one ordered by checking the rating plate attached on the
product.

6.2.2.

Accessory check1) Optional accessories (provided upon request)Item2-hole NEMA terminal connectors
4-hole NEMA terminal connectors
Clamp type terminal connectors (#2 STR - 750 MCM)
Wildlife protector / Animal guard
Controller (SEL-651R-2)
32-pin interface control cable
Lightning arrester (including fasteners, arrester grounding straps, jumper cables, etc.)
Power transformer with bracket

9

6.3.
6.3.1.

Mounting on the pole
Terminal connector attachment•

CAUTION •Dimensions of conductor of main circuits where the terminal connectors can be attached areshown as the figure below.
Use the terminal connectors which is suitable to the size of conductor.

1.99″
50.5 mm

ø1.26″ (ø32 mm)

Main circuit conductor
1)

2)

Example of terminal connector

Insert NEMA terminal connectors to the terminals of solid dielectric vertical and horizontal
bushings each after cleaning inside of connecting part of NEMA terminal connectors and theterminals of solid dielectric.
Insert NEMA terminal connectors until the top of terminal of solid dielectric indicated as blue
color and red colored part of NEMA terminal connectors are leveled as indicated in the diagram
below.
1)

2)

10

•
CAUTION

DO NOT APPLY FORCE TO TWIST THE SILICONE SHEDS TO A COUNTER-CLOCKWISE
DIRECTION WHEN CONNECTING THE NEMA TERMINAL CONNECTORS.
By applying the force to a counter-clockwise direction, screw parts of the silicone sheds may
get loose.

116.3.2.
①

Lightning arrester mounting
VBN20-A3-YQ1
FAULT CLEAR®: VBN20-A3-YQ1 is equipped with aluminum frame having holes and additionalframe structure for arrester mounting as indicated in the drawings below.
Choose the holes for arrester mounting for the horizontal phases depending on the utility’s
installation regulation and site condition.
1)

CAUTIONFix the lightning arresters on the holes as indicated in the drawing below.
・ Make sure that all fasteners are fastened at the torque specified in the instruction manualof the lightning arresters.

Hole for arrester mountingof LEFT vertical phase

Hole for arrester mounting of
MIDDLE vertical phase

Hole for arrester mountingof RIGHT vertical phase

Holes for arrester mountingof LEFT horizontal phase

Holes for arrester mountingof MIDDLE horizontal phase

Holes for arrester mountingof RIGHT horizontal phase

Based on the specifications, requirements, and/or regulations of utilities, connect the lightning
arresters to the terminal connectors and to the frame for grounding.
・ Make sure to keep the sufficient distance between the aluminum frame and the jumper
wires connecting between terminal connectors and lightning arresters.
CAUTION・ Make sure to fasten the bolts for grounding straps at the torque value specified in the
instruction manual of the lightning arresters.
・ (Photos) Example of lightning arrester mounting and grounding:
2)

CAUTION

DO NOT APPLY FORCE TO TWIST THE SILICONE SHEDSTO A COUNTER-CLOCKWISE DIRECTION WHEN
CONNECTING THE NEMA TERMINAL CONNECTORS.
By applying the force to a counter-clockwise direction, screwparts of the silicone sheds may get loose.

12② VBN20-A3-YQ2
FAULT CLEAR®: VBN20-A3-YQ2 is equipped with aluminum frame having holes and additionalframe structure for arrester mounting as indicated in the drawings below.
Choose the holes for arrester mounting for the horizontal phases depending on the utility’s
installation regulation and site condition.
1)
CAUTIONFix the lightning arresters on the holes as indicated in the drawing below.
・ Make sure that all fasteners are fastened at the torque specified in the instruction manualof the lightning arresters.

Hole for arrester mountingof LEFT vertical phase

Hole for arrester mounting of
MIDDLE vertical phase

Holes for arrester mountingof LEFT horizontal phase

Holes for arrester mounting of
MIDDLE horizontal phase

Hole for arrester mountingof RIGHT vertical phase

Holes for arrester mountingof RIGHT horizontal phase2) Based on the specifications, requirements, and/or regulations of utilities,
connect the lightning arresters to the terminal connectors and to the frame for grounding.
・ Make sure to keep the sufficient distance between the aluminum frame and the jumper
wires connecting between terminal connectors and lightning arresters.
CAUTION・ Make sure to fasten the bolts for grounding straps at the torque value specified in the
instruction manual of the lightning arresters.
・ (Photos) Example of lightning arrester mounting and grounding:

CAUTION

DO NOT APPLY FORCE TO TWIST THE SILICONE SHEDSTO A COUNTER-CLOCKWISE DIRECTION WHEN
CONNECTING THE NEMA TERMINAL CONNECTORS.
By applying the force to a counter-clockwise direction, screwparts of the silicone sheds may get loose.

13

6.3.3.

Lifting•

CAUTION••CAUTION

When lifting the FAULT CLEAR®, use four (4) rope slings having the length of 5’ (1.5m) or moreor two (2) rope slings having the length of 10’ (3m) or more and lift the FAULT CLEAR® as
shown in the figures below and hold the weight of the FAULT CLEAR® with mounting brackets.
When lifting the FAULT CLEAR® straight up, make sure that the ropes do not touch the silicone
sheds and epoxy of bushings.
Make sure to use the lifting lugs when lifting the FAULT CLEAR®. Using other parts of the
FAULT CLEAR® or aluminum frame may cause overturn.

Using 4 rope slings(Length: 5’ or more)

Using 2 rope slings(Length: 10’ or more)

DO NOT HANG THE ROPES ON THE BUSHINGS TO LIFT THE FAULT CLEAR®.
CAUTION14

6.3.4.

CAUTION

Pole mounting••

Make sure to proceed the works by paying attention to the safety of workers.
Mount the FAULT CLEAR® Recloser to the pole as the following procedures.

① VBN20-A3-YQ1
1) Fix two bolts on the pole at the same distance as the “Fixing points” of Recloser frame as shownin the drawing below.

Fixing point

31.5″(800 mm)Fixing point

2)

Hang the FAULT CLEAR® on the pole.

15

3)

Fasten bolts from pole side.

16

② VBN20-A3-YQ2◼

Before pole mounting (Assembly instructions of Back frame and braces)
1) Lift the FAULT CLEAR® with main frame up to assemble the back frame.

・ Use the lifting lugs when lifting and mounting the equipment.
CAUTION ・ Improper lifting can result in severe personal injury, death, and equipment damage.
Lifting lugs

FAULT CLEAR®
With main frame

Back frame
UNC1/2-13×1-3/4

2)

16 points

Assemble the braces on the lower side of the main frame and the back frame.

UNC1/2-13×1-3/4

6 points
Braces3)

Use a torque wrench to tighten the bolts to the specified tightening torque as shown below.

16 points
6 points

Specified tightening torqueUNC 1/2”

1737 ft.-lb [50 N・m]◼ Pole mounting
1) Fix two bolts on the pole at the same distance as the “Fixing points” of Recloser frame as shownin the drawing below.

Fixing point

38″(965.2 mm)

Fixing point

2)

Hang the FAULT CLEAR® on the pole.

18

3)

Fasten bolts from pole side.

19Grounding•
Grounding wire can be connected to the grounding terminal located on the aluminum frame of
the FAULT CLEAR® rear side.
•
FAULT CLEAR® can be grounded by the grounding terminal on the aluminum frame.
•
For safety of operators and protection of equipment, make sure to connect the FAULT CLEAR®
to the earth by grounding wire having the suitable conductor size prior to connecting the main
circuits to the power distribution lines. Make sure to ground the equipment according to the soil
CAUTIONcondition and regulation at the installation site.
•
Controller enclosure shall be always grounded through the FAULT CLEAR® as per the following
figures. If the grounding point of the controller enclosure is different from that of the FAULT
CLEAR®, the equipment may be broken due to the potential difference among equipment in
CAUTIONcase of lightning surge which increases grounding potential.
6.3.5.

① VBN20-A3-YQ1② VBN20-A3-YQ2

20

7. Connect to controller
Connector configuration

7.1.

Pin assignment•
Diagram of receptacle from the outside of the FAULT
CLEAR®
•
Connector: Amphenol or Equivalent

7.1.1.

Quoted from P3 of Amphenol PT Series, Catalogue No. PT/MB-J3

A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S

32-pin Male Connector pin assignment
Terminal Current – Phase 1
T ―Terminal Current – Phase 2
U Monitored Auxiliary Contact (52a) – Phase 1
Terminal Current – Phase 3
V Monitored Auxiliary Contact (52a) – Phase 2
Current Return
W Monitored Auxiliary Contact (52a) – Phase 3―
X Monitored 69 Contact+12 Vdc (Whetting Voltage)
Y Actuator Close – Phase 1
for monitoring recloser status
Recloser Ground
Z Actuator Trip – Phase1―a ―Voltage (horizontal) – Phase 1b ―Voltage (horizontal) – Phase 2c ―Voltage (horizontal) – Phase 3d ―Voltage (horizontal) – Commone ―Voltage (vertical) – Phase 1
f Actuator Close – Phase 2
Voltage (vertical) – Phase 2
g Actuator Trip – Phase 2
Voltage (vertical) – Phase 3
h Actuator Close – Phase 3
Voltage (vertical) – CommonjActuator Trip – Phase 3(Note No wiring is needed in the cabinet. Cable shield shall be grounded at the FAULT CLEAR® side.

・FAULT CLEAR® receptacle
Manufacturer: Amphenol# of pins: 32-pin
Insert arrangement: 18-32

7.1.2.
CAUTION・Control cable connector (example)
Manufacturer: Amphenol# of pins: 32-pin
Insert arrangement: 18-32

Precaution when connecting
Make sure to place the key to connector on the key groove of the receptacle and connect theconnector to the receptacle, and confirm the connector is firmly inserted to the receptacle.

217.1.3.

Control cable connection•

Connect a control cable to the metal connector located on the bottom of junction box equippedon the rear side of the FAULT CLEAR®.

•

Make sure to fix and hold the control cable to the pole, for example by using cable ties, in order
not to apply any tension to the metal connector part.

•

Never disconnect the control cable while the FAULT CLEAR® is energized.

CAUTIONCAUTION

Metal connector

22

7.2.

Ratio Correction Factors (RCF) for voltage sensors
FAULT CLEAR® has 6 (six) voltage sensors built in, and each voltage sensor needs the Ratio
Correction Factors depending on the operating voltage where the FAULT CLEAR® is installed.
The RCF sheet is enclosed in the FAULT CLEAR®. *The figure is for illustrative purposes only.

Use the values from this tableaccording to the operating
voltage of distribution line.

Confirm the serial numbers
and phase indications (1, 2,
and 3) match.

If your operating voltage is not
13.2 nor 25kV, refer the graphand find the RCFs.

RCFs shall be set through ACSELERATOR QuickSet SEL-5030 Software for SEL-651R-2 control.

Start the software, and select "Global" (①)
and then "Voltage Ratio Correction Factors"(②).
Enter the Voltage Ratio Correction Factors
to the areas (③).
In case the Ratio Correction Factors for youroperating voltage is not shown in the tables,refer the values indicated in the graph.

238. Operation
8.1.
8.1.1.

Operation by controller
Check prior to the operation by controller•

Handle position
When any of the operating handles are at downward position, the FAULT CLEAR® cannot be
operated by controller. Make sure that all operating handles are at upper position prior tooperation.

Handle at “Normal” position•

Handle at “OPEN (LOCK)” position

Position indicator

RECLOSER “CLOSE (RED)”RECLOSER “OPEN (GREEN)”

24

Operation by controller

8.1.2.

•••CAUTION

8.2.

SEL-651R-2 can operate the FAULT CLEAR from the following three modes of mechanicaloperation depending on SEL-651R-2 settings:
1) Single-phase trip / single-phase lockout- Each phase shall trip and lockout independently.
2) Single-phase trip / three-phase lockout- If one phase trip, the other two phases shall also trip to lockout to prevent single-phasing.
3) Three-phase trip / three-phase lockout- All phases trip and close simultaneously.
Refer the instruction manual of controller for the details.
FAULT CLEAR® can be operated by the controller manufactured by Schweitzer Engineering
Laboratories, Inc.

Operation of FAULT CLEAR® by operating handle

FAULT CLEAR® can be operated to open by operating handle with the insulated hotstick downward.
By turning the operating handle toward downward position, the FAULT CLEAR® cannot be operated bycontroller. (LOCK-OUT)•
DANGER

When operating the FAULT CLEAR® with operating handle, do not touch and scratch the bushings
or mounting bracket / frame with the hotstick.

Insulated hotstick25

9. Maintenance
FAULT CLEAR® is maintenance-free and designed with the mechanical performance of 10,000 operations
under the normal service condition specified in IEEE C37.60.
However, we recommend the following periodic checks to find any deterioration(s) and/or failure(s) prior to any
problem occurs in consideration of the usage environment and economic efficiency.
It is also recommended to perform the following maintenance after a natural disaster.

Appearance check

9.1.

Without suspending the power supply, carry out the appearance check of the FAULT CLEAR® visually.
Recommended checking interval: Once in one (1) year

CAUTION!
・Do not touch the medium voltage energized parts.
No.

Item
No damage or deformation on the FAULT CLEAR® appearance

1

Check that the color of the indicator matches the status of the recloser.
- OPEN: GREEN, CLOSE: RED- Refer to Clause 8.1.1
Appropriate grounding of the FAULT CLEAR®
- Check any signs of damage, such as frayed or corroded wires.
- Refer to Clause 6.3.5

2
3

9.2.

Functionality check9.2.1.

In addition to the appearance check, carry out the precise check by suspending the power supply.
Controller
Recommended checking interval: Once in six (6) months
FAULT CLEAR® Recloser

9.2.2.

Recommended checking interval: Once in four (4) years

CAUTION!
・Make sure to display and carry out the necessary protection to avoid
any making operation of the FAULT CLEAR® by accident.
No.

Item

Controller
1

Refer to the SEL-651R operation manual and datasheet for the maintenance and inspection
as well as the estimated life of the battery.

FAULT CLEAR® Recloser
1

Check the protection of the recloser with an appropriate test kit.
i.e. ARCO40 by OMICRON etc.

2

Insulation resistance between the main circuit and the ground shall be 2,000MΩ or more26

10. After service
For technical inquiries, please contact us at the followings.

Togami Electric Mfg. Co., Ltd.
1-1 Ohtakara-Kitamachi, Saga 840-0802 JAPANTEL +81-952-25-4131
FAX +81-952-24-6240
WEB https://www.togami-elec.co.jp/en/mvp/© Copyright Togami Electric Mfg. Co., Ltd., 2024
All Rights Reserved.

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