Multi-Circuit Testing Switchboard Relays, Meters Instruments Desc
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Supersedes DB-41-077 Dated April, 1998
Multi-Circuit Testing Switchboard Relays, Meters Instruments
Descriptive Bulletin
41-077
Page
Flexitest Switch Type FT-1
Figure FT-1 Flexitest Switch (Front View)
APPLICATION
Type FT-1 Flexitest Switches Test Plugs designed manufactured allow quick easy multi-circuit testing protective relays, meters instruments conventional system.
properly connected test instruments meters particular type.
Maximum Flexibility
FT-1 Switch built with maximum individual poles switch units. switches assembled variety different arrangements, match customer requirements. Test Plugs used conjunction with FT-1 Switch enable easy measurement, calibration, verification maintenance relays, meters instruments. Voltage measurements also made directly FT-1 Switch (without disturbing existing connections). There test clip located each pole that allows connection with standard spring clip test leads.
Advantages
Type FT-1 Switches related Test Plugs have features necessary applications involving measurement individual currents voltages associated with substation instrumentation protection devices. make before break current short circuit feature also allows test personnel quickly safely isolate equipment from current transformer (ct) circuits.
Safe Convenient
semi-flush mounted FT-1 Switch provides fast, safe reliable access components circuits panel boards switchboards without disconnecting existing wiring. measurements tests performed front switchboard without taking devices service.
Security
With cover place, meter type lead seal placed through either cover studs FT-1 Switch prevent unauthorized access switch. additional feature, clear cover available that also installed locked with switchblades open position.
Fast Reliable
When Test Plugs used, number circuits tested rapid succession, since plug
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SPECIFICATIONS Ratings
FT-1 Switch rated volts amps. recognized, meets exceeds requirements ANSI/IEEE C37-90 standard.
This same size driver that used head terminal screws standard FT-1 Switch.
Poles
FT-1 Switches available combinations anywhere from maximum individual poles switch units. Each pole identified letter visible along base from left right (See Fig. 1).The individual switch units knife blade type. There different types switch units available: potential poles current poles. Potential poles configured single, non-shorting knife blades potential, trip, control circuits. Current poles typically configured sets two, (C-C), with current circuits; consist current test jack, shorting spring, shorting blade, non-shorting blade. (See Fig. positions short circuit springs visible from front switch.
Mounting
FT-1 Switches designed semi-flush mounting front switchboard panels, facilitating inspection accessibility.
Weight
FT-1 Switch Service Series Test Plug Separate Source Test Plug Individual Current Circuit Test plug
lbs.
1.75
(kg)
(.79) (.68) (.68)
Shipping lbs. (kg)
(1.4) (1.4) (1.4) (0.45)
(.045)
FT-1 SWITCH CONSTRUCTION Base
base FT-1 Flexitest Switch made molded polycarbonate material, which provides tough, insulated enclosure. Barriers molded into base (front rear) separate switch units from another. barriers provide insulation between poles, also ample wiring space between terminals.
Cover
cover FT-1 Switch provides tough insulated enclosure switch also made polycarbonate material. FT-1 standard styles come with black opaque cover, optional clear cover also available. This clear switch cover affords user unique option intentionally leaving switch handles open position replacing cover. Maintaining provision meter seal when some handles open position allows user service electrical equipment while still complying with OSHA lock procedures. clear cover ordered FT-1 Switches ordered separately retrofit existing FT-1 Switches. Users will maintain same ease accessibility with black opaque cover. cover thumb been modified that 1/4" driver used loosen tighten
Figure Blade assembly position pole "C-C" (Rear View, outside base)
Switch Handles
Switch handles made molded phenolic material, typically black potential current circuits, trip circuits. They also available variety different colors. Each handle dovetail indentation hold circuit identification label. Knife blade switches operated independently, ganged together with horizontal interlocking bar, suit testing needs. (See Fig. hole runs through middle each switch handle allow insertion interlocking bars that mechanically switch handles together. Interlocking Bars sold separately. (See "ACCESSORIES ORDERING INFORMATION" page
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Figure Switch Handles
Figure FT-1 Switch (rear view)
Terminals
Connection terminals located rear switch. Terminals numbered easy identification (rear view). Each pair numbered terminals associated with matching pole designated letter front switch. (See Fig.
FT-1 SWITCH ORDERING INFORMATION Style Number Prefix None (Standard) Style Number Table Description Black Cover Screw Terminals Black Cover Stud Terminals Clear Cover Screw Terminals Clear Cover Stud Terminals Photo
Table
Table
Table
FT-19R Applications only (See 41-078)
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Ordering Information
FT-1 Switches ordered style number. Table starting page provides comprehensive selection guide existing styles. FT-1 Switch with black cover screw terminals will supplied when ordering standard style number listed Table (Example: 129A501G01). optional clear cover will supplied instead black cover using style number prefix "C", (Example: C129A501G01). Optional stud terminals will supplied using style number prefix "S", (Example: S129A501G01). Optional clear cover optional stud terminals will supplied using style number prefix "CS", (Example: CS129A501G01). FT-1 Switch requirements that cannot matched existing style number Table recommended that customer find style number that comes closest meeting necessary requirements. Enter description only order FT-1 Switch similar-to (existing style) except stating different characteristic(s) required. Customers also place order providing complete Switch Arrangement definition, Example: (See Switch Arrangement section below.)
Some current Pole Designations span more than pole position. space delimiter between Pole Designations, (Example: complete Switch Arrangement definition style number 129A514G01). Tables complete listing available Pole Designations, their definitions.
Note: switch arrangements developed ordered should checked adequate current transformer shorting when applied current transformer circuits.
Terminals
required terminal hardware supplied with each FT-1 Switch. Screw Terminals provided with standard FT-1 Switch styles. They require customer connections made with washer head screw. (See Fig. Stud Terminals optional feature. Customer connections made with washers nut. (See Fig. special driver purchased from connect stud terminals. (See "ACCESSORIES ORDERING INFORMATION" page
Switch Arrangement
FT-1 Switches available combination poles. Pole positions identified from left right front view switch letters through "J". Pole designations used identify each type pole. develop complete Switch Arrangement that describes unique FT-1 Switch, arrange pole designation sequentially from left right (A-J). Every pole position defined "Pole Designation" ("X" used designate empty pole positions).
Figure Standard Optional Terminals
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Table CURRENT POLES
POLE DESIGNATIONS HANDLE COLOR BLACK NON-SHORTING, WITH TEST JACK BLACK CURRENT, SHORTING, WITH CURRENT TEST JACK SCHEMATIC DIAGRAM DESCRIPTION
BLACK
CURRENT, SHORTING, WITHOUT CURRENT TEST JACK
BLACK
CURRENT, SHORTING, WITHOUT CURRENT TEST JACK, WITHOUT BLADE
BLACK
CURRENT, SHORTING, WITH CURRENT TEST JACK, WITHOUT BLADE
BLACK
CURRENT, SHORTING, WITHOUT CURRENT TEST JACK WITH SHORTING BLADE ALSO
C-C-C
BLACK
CURRENT, SHORTING, WITH CURRENT TEST JACK POSITION SHORTING SPRING)
Current Poles special Pole Designations developed test circuits. They intended current transformer circuits. Pole Designations Also available C-C-A, C-C-B. C-C-C-C
Typical
Table POTENTIAL POLES
POLE DESIGNATIONS
HANDLE COLOR BLACK GREEN YELLOW BLUE WHITE ORANGE BLACK
SCHEMATIC DIAGRAM
DESCRIPTION
Typical Pole Designations
POTENTIAL, NON-SHORTING BLADE
POTENTIAL, LONG BLADE FIXED SHORTING STRAP CURRENT JAW, BLADE TERMINAL STUD BLADE LOCATION, STUD TEST CLIP EMPTY POLE POSITION
41-077 Page
TEST PLUGS In-Service Series Test Plug
WARNING
When using In-Service Series Test Plug current measurements, connections from Test Plug measuring instruments must made before inserting Test Plug place.
through holes back insulated handle. (See Figs.
Figure Individual Current Circuit Test Plug
Figure In-Service Series Test Plug
"In-Service" Series Test Plug with maximum positions designed match pole configurations specific styles Flexitest devices (either FT-1 Switches case relays). every switch relay pole configuration suitable accept InService Series Test Plug, many FT-1 Switch styles have already available, Table page "IN-SERVICE TEST PLUG". This Test Plug typically used connect devices measuring currents voltages being applied switchboard relays, meters instruments without interrupting short-circuiting circuit. Only current test switches with current jack must opened before inserting Series Test Plug.
Figure Individual Current Plug inserted into Flexitest Case
Separate Source Test Plug
WARNING
Provision made only current poles with shorting springs automatically short-circuit current transformer circuits when knife switches opened prior inserting Test Plug.
Individual Current Circuit Test Plug
WARNING
When using Individual Current Circuit Test Plug current measurements, connections from Test Plug measuring instruments must made before inserting Test Plug place
Figure Separate Source Test Plug Position
Individual Current Circuit Test Plug ammeter type device used measure current. inserted current test jack Flexitest devices after opening knife blade switch. This plug consists conducting strips separated insulating strip. ammeter connected these strips terminal screws leads carried
Position Separate Source Test Plug isolates external connections from relay equipment under test. This test plug provides quick circuit testing, fitting into stationary contact jaws Flexitest Type Case FT-1 Switch. L-shaped test blades assure quick, accurate alignment between Test Plug stationary contact jaws.
41-077 Page
This Test Plug connects relay inputs outputs binding posts Test Plug, completely isolates relay circuits from external connections (ct, trip, etc.) means insulated barrier along bottom plug. external test circuits then connected these binding posts, which staggered easy accessibility. Before inserting Separate Source Test Plug, switch- blades must placed full open position. Flexitest Type Case, plug inserted bottom switch jaws with binding posts test switch jaws with binding posts down. (See Fig.
Figure Separate source test plug shown inserted FT-Case (Bottom Switch Jaws)
TEST PLUGS ORDERING INFORMATION
Description Style Number Photo
In-Service Series Test Plug (Order match Flexitest relay case FT-1 Switch arrangement)
Table
Individual Current Circuit Test Plug (Leads included)
7B4618G04
Separate Source Test Plug position)
1164046
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ACCESSORIES ORDERING INFORMATION
Description Style Number Photo
Clear Cover
9676A32G01
Black Cover
128A973G01
Description
Style Number
Photo
Driver
(For Stud Terminals only, Prefix "S")
877A821G01
Description
Style Number
Photo
Interlocking Position Interlocking Position Interlocking Position Interlocking Position Interlocking Position Interlocking Position
1270547 1164048 02C9834G03 02C9834G04 02C9834G06 02C9834G05
41-077 Page
Table FT-1 Switch Selection Guide
POTENTIAL POTENTIAL CURRENT CURRENT
STANDARD STYLE
IN-SERVICE TEST PLUG
C-C-C-C
STANDARD STYLE 1586C39G02 291B956G26 129A507G01 291B956G18 291B956G30 9671A05G01 9676A36G01 291B956G28 291B956G13 291B956G23 763A109G01 498A027G01 291B956G27 291B956G29 837A087G01
IN-SERVICE TEST PLUG 129A062G10 129A062G01 129A062G01 129A062G01 129A062G01 129A062G02 129A062G09
Pole Pole Pole Pole
774B542G09 129A062G10
291B954G15 129A534G01 291B954G13 291B954G14 291B954G16 9676A38G01 291B954G12 129A531G01 498A026G01 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G01 129A062G08 129A062G07 Pole 9676A26G01 9676A27G01 129A524G01 291B956G31 1586C39G01 291B956G32 129A506G01 3501A86G06 291B956G24 291B956G25 129A538G01 498A022G01 9663A80G01 9672A73G01 763A166G01 498A012G01 862A584G01 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 Pole
716B871G11 716B871G09 716B871G12 9663A78G01 716B871G10 129A062G10 129A062G10 129A062G10
129A505G01 291B957G15 9676A37G01 129A508G01 129A533G01 291B957G17 291B957G16 291B957G09 498A002G01 129A555G01
129A062G10 129A062G10 129A062G10 129A062G07 129A062G01 129A062G01
188A416G01 837A889G01 629A568G01 129A504G01 129A550G01 291B958G25 1586C40G01 291B958G33 129A509G01 9667A02G01 9672A03G01 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G01
41-077 Page
Table FT-1 Switch Selection Guide (continued)
POTENTIAL POTENTIAL CURRENT CURRENT
STANDARD STYLE 291B958G24 129A543G01 9676A19G01 291B958G30 129A537G01 291B958G31 291B958G27 9672A72G01 188A454G01 291B958G26 291B958G29 498A017G01 129A516G01 291B958G28 129A523G01 498A014G01 188A304G01 9660A97G01
IN-SERVICE TEST PLUG 129A062G02 129A062G12 129A062G02 292B319G23 292B319G23
STANDARD STYLE 291B959G32 291B959G20 498A003G01 9663A77G01 129A540G01 291B959G29 9676A24G01
IN-SERVICE TEST PLUG 129A062G02 292B319G23 292B319G22
Pole
Pole
C-C-C-B C-C-C-B 291B960G37 129A549G01 719B591G09 291B960G39 129A502G01 129A536G01 129A546G01 719B591G14 719B591G10 719B591G12 291B960G26 188A632G01 291B960G36 763A167G01 629A315G01 719B591G13 719B591G11 129A512G01 498A016G01 129A530G01 129A544G01 291B960G27 9667A21G01 129A521G01 129A525G01 291B960G38 9668A69G01 498A018G01 498A019G01 498A004G01 129A517G01 498A029G01 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G08 129A062G01 129A062G01 129A062G02 129A062G06 129A062G12 129A062G02 292B319G23 129A062G09 129A062G09 292B319G22 292B319G22
129A526G01 129A503G01 291B959G19 129A547G01 291B959G30 498A013G01 9663A79G01 291B959G28 763A168G01 291B959G33 188A261G01 129A510G01 291B959G27 291B959G18 188A622G01 9667A17G01 188A477G01 188A618G01 129A511G01 498A008G01 291B959G26 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G07 129A062G08 129A062G01 129A062G01 129A062G08 292B319G24 129A062G02 129A062G02
41-077 Page
Table FT-1 Switch Selection Guide (continued)
POTENTIAL POTENTIAL CURRENT CURRENT
C-C-C-B C-C-C-B C-C-C-C C-C-C-C C-C-C-A C-C-C-B C-C-C-B C-C-C-B C-C-C-C C-C-C-B
STANDARD STYLE 291B960G20 291B960G33 9660A84G01 188A229G01 9672A10G01 1586C41G01 837A099G01 498A025G01 837A098G01
IN-SERVICE TEST PLUG 292B319G22
STANDARD STYLE 129A501G01 3501A86G02 774B430G19 1586C42G23 9671A94G01 9672A77G01 1586C42G25 1586C42G29 9676A08G01 9672A75G01 1586C42G30 9672A98G01 9672A71G01 9671A95G01 1586C42G24 670B197G21 9667A06G01 1586C42G28 9676A14G01 670B197G26 9672A74G01 1586C42G15 670B197G24 9668A27G01 9667A03G01 9670A98G01 9671A69G01 1586C42G31 670B197G36 9667A93G01 9670A35G01 9670A34G01 9670A97G01 1586C42G06 1586C42G46 9668A54G01 9676A34G01 1586C42G45 9667A78G01 1586C42G41 9660A92G01 9671A68G01
IN-SERVICE TEST PLUG 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10
Pole Pole
C-C-C-B C-C-C-B 129A548G01 129A551G01 291B961G23 291B961G30 129A552G01 629A483G01 188A633G01 291B961G22 291B961G28 129A545G01 498A028G01 9663A34G01 861A551G01 129A515G01 498A024G01 291B961G27 291B961G29 9663A74G01 291B961G25 291B961G26 498A009G01 9668A70G01 498A023G01 3501A86G05 498A021G01 9676A25G01 129A062G10 129A062G10 129A062G02 129A062G02 129A062G02 292B319G23 292B319G23 292B319G23 292B319G22
9672A97G01 129A062G10
41-077 Page
Table FT-1 Switch Selection Guide (continued)
POTENTIAL POTENTIAL CURRENT CURRENT
STANDARD STYLE 9667A86G01 9663A25G01 670B197G31 9671A13G01 716B562G10 1586C42G44 129A539G01 3501A86G04 9672A02G01 9663A41G01 498A011G01 1586C42G39 714B325G31 837A665G01 1586C42G20 1586C42G32 670B197G33 716B562G21 9663A60G01 129A542G01 1586C42G38 714B325G30 716B562G26 9676A15G01 716B562G35 9672A83G01 1586C42G26 9676A04G01 1586C42G33 1586C42G47 670B197G17 9672A89G01 129A553G01 716B562G20 714B325G27 498A015G01 1586C42G13 9672A80G01 9676A06G01 9663A31G01 716B562G17 716B562G19
IN-SERVICE TEST PLUG 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G10 129A062G01 129A062G01 129A062G01 129A062G01 129A062G01 129A062G01 129A062G01 129A062G01
C-C-C-C C-C-C-C C-C-C-C C-C-C-E C-C-C-C C-C-C-A C-C-C-C C-C-C-C C-C-C-C C-C-C-C
STANDARD STYLE 877A077G01 1586C42G11 1586C42G12 9672A99G01 9672A87G01 716B562G36 129A513G01 629A735G01 1586C42G22 1586C42G27 836A867G01 714B325G28 716B562G15 129A520G01 714B325G29 670B197G19 670B197G34 129A532G01 714B325G16 714B325G18 670B197G28 9676A09G01 1586C42G14 670B197G25 670B197G37 9660A91G01 9676A05G01 849A307G01 861A670G01 670B197G20 774B430G18 1586C42G21 774B430G20 1586C42G36 9671A70G01 774B430G24 716B562G16 1586C42G10 774B430G09 9660A96G01 716B562G37 774B430G10
IN-SERVICE TEST PLUG 129A062G06 129A062G06 129A062G06 129A062G06 129A062G05 129A062G02 129A062G02 292B319G22 129A062G05 129A062G05 129A062G09 129A062G09
41-077 Page
Table FT-1 Switch Selection Guide (continued)
POTENTIAL POTENTIAL CURRENT CURRENT
C-C-C-A C-C-C-C C-C-C C-C-C C-C-C-C
STANDARD STYLE 129A528G01 774B430G21 714B325G19 716B562G18 9670A05G01 714B325G17 129A514G01 670B197G32 9671A93G01 1586C42G34 670B197G27 714B325G24 1586C42G05 670B197G18 1586C42G37 670B197G23 9660A85G01 1586C42G03 1586C42G48 9676A17G01 714B325G20 188A523G01 1586C42G18 9667A22G01 9667A80G01 9672A90G01 9667A69G01 714B325G32 9676A35G01 774B430G13 498A010G01 9676A10G01 9672A01G01 1485B70G09 1485B70G10 716B562G30 774B430G16 1485B70G11 1586C42G43 714B325G22 716B562G12 129A535G01
IN-SERVICE TEST PLUG 292B319G23 292B319G23 292B319G23 292B319G23 292B319G23 292B319G23 292B319G23 292B319G23 292B319G23 292B319G23 292B319G23 292B319G23 292B319G22
C-C-C-B C-C-C-B C-C-C-C C-C-C-C C-C-C-C C-C-C-B C-C-C-C C-C-C-B C-C-C-C C-C-C-C C-C-C-C C-C-C-C C-C-C-C C-C-C-C C-C-C-C C-C-C-C C-C-C-C C-C-C-C C-C-C-D C-C-C-B C-C-C-D C-C-C-D C-C-C-D C-C-C-D C-C-C-E C-C-C-E C-C-C-E C-C-C-E C-C-E
STANDARD STYLE 3501A86G01 9672A86G01 1586C42G17 9671A26G01 1586C42G19 714B325G11 714B325G25 670B197G22 670B197G35 9663A59G01 714B325G21 837A407G01 9672A95G01 9676A11G01 774B430G22 837A664G01 716B562G24 9667A68G01 498A031G01 716B562G38 714B325G15 837A101G01 1586C42G42 774B430G11 1586C42G09 9671A22G01 9672A94G01 9676A01G01 498A032G01 714B325G13 774B430G12 9672A23G01 9672A88G01 716B562G39 129A519G01 716B562G27 129A518G01 3501A86G03 1586C42G08 837A616G01 716B562G25 714B325G12
IN-SERVICE TEST PLUG 292B319G22 292B319G22 292B319G22 292B319G22 292B319G22 292B319G22 292B319G22 292B319G22
41-077 Page
Table FT-1 Switch Selection Guide (continued)
POTENTIAL CURRENT
C-C-C-B C-C-C-B
STANDARD STYLE 716B562G11 9671A04G01 9671A12G01 876A157G01 670B197G38 849A513G01 716B562G28 1586C42G16 774B430G28 129A541G01 188A286G01 670B197G16 1586C42G40 1586C42G35 714B325G23 498A030G01 129A529G01 774B430G17 9676A18G01 716B562G14 716B562G13 714B325G26 774B430G15 498A020G01 9676A23G01 9676A20G01 774B430G14 1586C42G02 498A001G01 714B325G14 774B430G23 9676A07G01 714B325G09 291B962G31 714B325G10 716B562G09 9663A33G01
IN-SERVICE TEST PLUG 292B319G22 292B319G22 292B319G22
C-C-C-C C-C-C-A C-C-C-A C-C-C-A C-C-C-B C-C-C-B C-C-C-C C-C-C-C C-C-C-C
When multi-position In-Service Test Plug available, then individual current circuit test plug used.
41-077 Page
9666A11
Figure Typical FT-1 Switch Connection Schematic
41-077 Page
129A500
Figure FT-1 Switch, Outline Drilling Plan, with Standard Black Cover Optional Clear Cover
Inc. Allentown, Tel: 610-395-7333 800-634-6005 Fax: 610-395-1055
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