Test Switches & Plugs
Type FT
Type RT
Type PK-2
1
GE Digital Energy
Instrument Transformers, Inc.
Agenda
 What are Test Switches & Test Plugs?
 10 Pole FT Test Switches
Features & Uses
Design Details
Selection & Ordering Information
Typical Connection Diagram
 10 Pole FT Test Plugs
“In-Service Series” Application
“Separate Source” Application
 Typical FT Test Switch Installations
 RT Rack Mounted Test Switches
 ABB to ITI Cross Reference for FT Test Switches
 4 & 6 Pole PK-2 Test Blocks and Plugs
Ordering Information
Features & Uses
Design Details
2
GE Digital Energy
Instrument Transformers, Inc.
What are Test Switches &
Test Plugs?
Test Switches are devices designed for mounting on
switchboard panels for use in conjunction with proper
test equipment to facilitate the testing of
instruments,
meters, and relays.
Test Plugs are multi circuit devices designed to be used
with test switches to enable easy measurement,
calibration, verification or maintenance of instruments,
meters, and relays.
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GE Digital Energy
Instrument Transformers, Inc.
FT Test
Switches
Consist of (2) components
10 Pole
FT Test Switch
10 Pole
FT Test Plug
4
GE Digital Energy
Instrument Transformers, Inc.
10 Pole FT Test Switch -- Features & Uses
Semi-flush mounted in front panel
Rear termination provisions
Configurable to meet customer requirements
Black or clear (optional) safety cover
Provisions for meter type seal
FTC-066 Test Switch with clear cover
FT-066 Test Switch with black cover
Isolate relay inputs & outputs for injection
of current & voltage from separate sources
(Use “Separate Source” Test Plug)
Measure system currents & voltages during
field testing & commissioning
(Use “In-Service Series” Test Plug)
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GE Digital Energy
Instrument Transformers, Inc.
10 Pole FT Test Switch
ITI P/N FT-099
Front view with cover removed
Blades open
10 Poles labeled “A” thru “J”
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GE Digital Energy
Instrument Transformers, Inc.
FT Test Switch – Rear terminals
Threaded rear terminals
Terminal numbers molded into base
Nickel plated brass pan head screws, flats,
& locks supplied loose
Threaded studs and hex nuts available as option
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GE Digital Energy
Instrument Transformers, Inc.
FT Pole Assemblies
“P” = Potential
“C” = Current
Non-Shorting
“C-C”
Current Shorting
(2-Poles Required)
“C-C-C”
Current Shorting
“C-C-C-C”
Current Shorting
(3-Poles Required)
(4-Poles Required)
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GE Digital Energy
Instrument Transformers, Inc.
10 Pole FT Test Switch
Typical Selection table
(Note poles A through J……Reference slide 4)
Schematic Symbols
“P” = Potential
(Poles A, B, & J)
“C” = Current
Non-Shorting
(Pole C)
“C-C” = Current Shorting
(2-Poles Required)
(Poles D-E, F-G, & H-I)
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GE Digital Energy
Instrument Transformers, Inc.
FT Test Switch Potential Pole “P”
Non-Shorting Blade used for
voltage and trip circuits
Rear Termination
Provision
Blade assembly of (1) position potential pole (P)
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GE Digital Energy
Instrument Transformers, Inc.
FT Current Shorting Pole ‘C-C’
Non-Shorting Blade
with Current Test Jack
Jaw
Rear Termination
Provision
Shorting Blade
Bottom cam of the shorting blade
makes contact with the shorting spring
of the pole to the right before
disengaging from the jaw
(Make before break contact)
Shorting Spring from
Non-Shorting Pole to Right
Blade assembly of (2) position current
shorting pole with current test jack (C-C)
Let’s take a look at the
current test jack pole to the right
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GE Digital Energy
Instrument Transformers, Inc.
FT Non-Shorting Current Pole ‘C’
Non-Shorting Blade (Open)
Current Test Jack
for insertion of current
test probe
Jaw
Rear Termination
Provision
Blade assembly of non-shorting current pole
with current test jack (C) --- Part of 2-pole (C-C)
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GE Digital Energy
Instrument Transformers, Inc.
FT Test Switch Handles
Molded slot for
circuit identification card
Optional interlocking bar kit
(3) Potential blades tied together
with interlocking bar kit
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GE Digital Energy
Instrument Transformers, Inc.
FT Test Switch Part Number System
See next slide for typical selection chart
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GE Digital Energy
Instrument Transformers, Inc.
Typical FT Test Switch & Test Plug Selection Chart
Potential Pole Position “A”
In-Service Series Test Plug Part Number
(2) Pole Current
Shorting with Test
Jack Position “F-G”
Test Switch Part Number FT-066
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GE Digital Energy
Instrument Transformers, Inc.
Non-Standard FT Test Switch Specification Form
Step 1
The switch body can support 1 to 10 poles in slots marked A through J.
Enter a letter from the legend. Leave unused slots blank.
Example:
A
B
C
D
E
F
G
H
I
J
A
B
C
D
E
F
G
H
I
J
C C- -C R- -R- -R- -R P P P
Legend:
P = Potential, Black; T = Potential, Red; O = Potential, Orange; Y = Potential, Yellow; G = Potential, Green;
B = Potential, Blue; W = Potential, White
C = Current, Non-shorting, Black
R = Current, Non-shorting, Red
C--C, C--C--C, C--C--C--C = Current, Shorting with current test jack right most position, Black
R--R, R--R--R, R--R--R--R = Current, Shorting with current test jack right most position, Red
CO = Current, Orange; CY = Current, Yellow;CG = Current, Green; CB = Current, Blue; CW = Current, White
Note: Some functions will require more than one slot in the switch body
Step 2
If a tie bar is required check this box
and draw a dark heavy line over the poles to be joined.
In the example above positions H, I, & J will operate together.
Step 3
Select a cover style
Clear (Installs over open or closed switches)
Black (Installs over closed switches only)
Step 4
Select a rear terminal type
Screws (Standard)
Studs (Optional)
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GE Digital Energy
Instrument Transformers, Inc.
10 Pole FT Test Switch
Typical Connection
FT-076
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GE Digital Energy
Instrument Transformers, Inc.
10-Pole “In-Service Series” Test Plug
Used in conjunction with 10-pole test switch
Various designs to match specific 10 pole
test switches
Used to connect devices to measure currents
& voltages being applied to the switchboard relays
& meters without interrupting or short circuiting
the circuit
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GE Digital Energy
Instrument Transformers, Inc.
“In-Service Series” Test Plug Application
FT Test Switch
Circuit detail of FT test switch prior
to insertion of “In-Service Series”
Test Plug
Existing Meter
or Relay
FT
Test Switch
Existing Meter
or Relay
External Current
Measuring Instruments
Bi-Conductor Paddle & Leads
Circuit detail of FT test switch
after insertion of “In-Service
Series” Test Plug & connection
of external instruments
Instrument Ground…
Use “Potential Stab”
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GE Digital Energy
Instrument Transformers, Inc.
10-Pole “Separate Source” Test Plug
Currently Not Available from ITI
Used in conjunction with 10-pole test switch
Used to isolate and connect the “out of service” relays or
switchboard devices to external test instruments
States Part Number FTP10-10
ABB Part Number 1164046
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GE Digital Energy
Instrument Transformers, Inc.
“Separate Source” Test Plug Application
FT Test Switch
Circuit detail of FT test switch prior
to insertion of “Separate Source”
Test Plug
Existing Meter
or Relay
Bi-Conductor Paddle & Lead
to External Current Supply
FT Test
Switch
Existing Meter
or Relay
Circuit detail of FT test switch after
insertion of “Separate Source” Test
Plug & connection of external
current supply
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GE Digital Energy
Instrument Transformers, Inc.
FT Switches – Typical Installations
MV Switchgear
Relay / Control
Panels
MV MCC
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GE Digital Energy
Instrument Transformers, Inc.
Multilin Standard RT Model
Meter seal provisions
Access to panel mounting
hardware prevented with
cover installed
Clear safety shield at
rear screw terminal area
Black panel – 19 inches
wide x 5.22” high
Up to (3) type FT
Switches per panel
Full width clear cover –
handles either open or closed
Padlock provisions
Part number system
RT LLL CCC RRR
Right FT suffix
Center FT suffix
Left FT suffix
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GE Digital Energy
Instrument Transformers, Inc.
Optional RT Models Available
Full width clear cover –
handles either open or closed
Panel colors:
ANSI 61 & 49 gray
Brushed aluminum
Up to (3) type FT
switches per panel
Panel heights:
3.47”
5.22”
5.22” offset
6.97”
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GE Digital Energy
Instrument Transformers, Inc.
Part number system for optional RT models
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GE Digital Energy
Instrument Transformers, Inc.
FT Test Switch - ABB to ITI Cross Reference (*)
ITI Part
ITI Part
ITI Part
ITI Part
ITI Part
ABB
Number
ABB
Number
ABB
Number
ABB
Number
ABB
Number
Part Number (FT-____) Part Number (FT-____) Part Number (FT-____) Part Number (FT-____) Part Number (FT-____)
129A501G01
129A502G01
129A503G01
129A504G01
129A505G01
129A506G01
129A507G01
129A508G01
129A509G01
129A510G01
129A511G01
129A512G01
129A513G01
129A514G01
129A515G01
129A516G01
129A517G01
129A518G01
129A519G01
129A520G01
066
044
035
021
015
008
011
017
023
037
041
051
072
074
064
029
058
078
077
071
129A521G01
129A523G01
129A524G01
129A525G01
129A526G01
129A528G01
129A529G01
129A530G01
129A531G01
129A532G01
129A533G01
129A534G01
129A535G01
129A537G01
129A538G01
129A539G01
129A541G01
129A542G01
129A543G01
129A544G01
054
028
009
053
033
075
081
050
004
070
016
002
076
025
007
083
080
068
024
048
129A545G01
129A546G01
129A547G01
129A548G01
129A549G01
129A550G01
129A551G01
129A553G01
129A555G01
188A229G01
188A261G01
188A304G01
188A416G01
188A454G01
188A477G01
188A618G01
188A632G01
188A633G01
291B954G12
291B954G13
062
043
032
060
045
020
059
069
019
056
038
026
022
030
039
042
046
063
005
001
291B956G13
291B956G18
291B956G23
291B959G18
291B959G19
291B960G26
498A002G01
498A004G01
498A008G01
498A010G01
498A011G01
498A013G01
498A014G01
498A015G01
498A016G01
498A019G01
498A020G01
498A021G01
498A022G01
498A026G01
013
010
014
036
034
047
018
057
040
084
067
031
027
073
049
055
082
065
006
003
498A027G01
629A315G01
629A483G01
837A101G01
837A407G01
012
052
061
130
085
Consult factory for other part numbers
(*) This cross reference is intended to be accurate; however, all equivalent part numbers are based on available competitor product
data only. Therefore this cross reference should be used as a guide only. All recommended ITI configurations to be confirmed by
customer before placing orders.
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GE Digital Energy
Instrument Transformers, Inc.
PK-2 Test Blocks & Plugs
4 & 6 Pole
PK-2 Test Block
4 & 6 Pole
PK-2 Test Plug
P/N 6422120G1
4-Pole; surface mount on 1 to 2 inch panels
P/N 6129533G1
4-Pole
P/N 6422120G2
6-Pole; surface mount on 1 to 2 inch panels
P/N 6129533G2
6-Pole
P/N 6422120G3
4-Pole; semi-flush on 0.12 inch panels
surface mount on 0.12 to 0.5 inch panels
P/N 6422120G4
6-Pole; semi-flush on 0.12 inch panels
surface mount on 0.12 to 0.5 inch panels
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GE Digital Energy
Instrument Transformers, Inc.
PK-2 Test Blocks – Features & Uses
Semi-flush or surface mounted
Cover removal automatically shorts current circuits
Rear termination provisions
Provided with unmounted auxiliary contacts, jumpers,
and hardware for field installation into test block
Reference application data for typical arrangements of
contacts & jumpers
http://www.multilin.com; Type PK-2 in “search”;
Select “PK-2 test Blocks and Plugs – Product Information”; Select “Brochures”
Routine testing accomplished by removing cover
and inserting the properly connected test plug
Normal connections restored by replacing cover
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GE Digital Energy
Instrument Transformers, Inc.
PK-2 Test Blocks
3
1
4
2
6-Pole Test Block with Cover Removed
(Component parts defined below)
Legend:
(1)
Auxiliary Contact
Maintains circuit with cover or plug not installed
(2)
Auxiliary Contact
Short circuits CT with cover or plug not installed
(3)
Jumper
Used with contacts (2) or (4) -- short circuits CT or
interconnects phases when cover-fastening stud is to be
bypassed
(4)
Auxiliary Contact
Equal to one pole of contact (2) & used with jumper (3)
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GE Digital Energy
Instrument Transformers, Inc.
PK-2 Test Plugs
Test Links supplied with plug
(4) with the 4-pole
(6) With the 6-pole
Links can be installed vertically or horizontally
Test Links
Refer to application data for typical test link
arrangements
http://www.multilin.com; Type PK-2 in “search”;
Select “PK-2 test Blocks and Plugs – Product Information”; Select “Brochures”
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GE Digital Energy
Instrument Transformers, Inc.
QUESTIONS
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GE Digital Energy
Instrument Transformers, Inc.