Download S275-10-1 (Discontinued Product)

Fault Interrupters
S275-10-1
Type CI; Three-Phase
Installation and Operation Instructions
87863KMA
Figure 1.
Type CI electronically controlled three-phase vacuum fault interrupter.
Service Information
RADIATION WARNING: See
Service Information S280-90-1.
CONTENTS
Safety Information ...........................................................2
Shipment and Acceptance .............................................3
Handling and Storage .....................................................3
Description ......................................................................3
Maintenance Requirements ...........................................3
Electrical Ratings ............................................................3
Current ...........................................................................3
Spring Charging Motor ...................................................3
Trip Coil ..........................................................................3
Closing Solenoid ............................................................3
Duty Cycle ......................................................................4
Voltage ............................................................................4
Dimensions and Weights ................................................4
Installation .......................................................................5
Interrupter Mounting .......................................................5
Lifting an Interrupter .......................................................5
Control Mounting ............................................................5
Electrical Connection .....................................................8
Grounding ...................................................................8
High Voltage ................................................................8
Auxiliary Power .........................................................8
March 1989
●
Supersedes 10/87
Control-lnterrupter Interconnection ................................. 8
Remote Control Wiring .................................................... 8
Leak Testing Tank .............................................................. 9
Interrupter Accessories ...................................................... 9
Frame Extension ................................................................ 9
Auxiliary Switch .................................................................. 9
Control Accessories ...........................................................10
DC Trip Control ..................................................................10
Relay Control .....................................................................10
Instantaneous Trip Accessory ............................................10
Target Accessory ................................................................11
Inrush Restraint Accessory ................................................12
Operating Procedures ........................................................14
Mechanical Operation Check .............................................15
Electrical Operation Check ................................................15
Manual Closing ..................................................................15
Manual Tripping .................................................................15
In-Service Operation ...........................................................15
Initial Operation ..................................................................15
Automatic Operation ..........................................................15
Removing Control from Service ........................................15
1
Type CL: three-Phase Installation and Operation Instructions
!
SAFETY
FOR LIFE
!
SAFETY FOR LIFE
SAFETY
FOR LIFE
Cooper Power Systems products meet or exceed all applicable industry standards relating to product safety. We actively
promote safe practices in the use and maintenance of our products through our service literature, instructional training
programs, and the continuous efforts of all Cooper Power Systems employees involved in product design, manufacture,
marketing, and service.
We strongly urge that you always follow all locally approved safety procedures and safety instructions when working
around high voltage lines and equipment and support our “Safety For Life” mission.
SAFETY INFORMATION
The instructions in this manual are not intended as a substitute for proper training or adequate experience in the
safe operation of the equipment described. Only competent technicians who are familiar with this equipment
should install, operate, and service it.
A competent technician has these qualifications:
• Is thoroughly familiar with these instructions.
• Is trained in industry-accepted high- and low-voltage
safe operating practices and procedures.
• Is trained and authorized to energize, de-energize,
clear, and ground power distribution equipment.
• Is trained in the care and use of protective equipment
such as flash clothing, safety glasses, face shield,
hard hat, rubber gloves, hotstick, etc.
Following is important safety information. For safe installation and operation of this equipment, be sure to read
and understand all cautions and warnings.
Safety Instructions
Following are general caution and warning statements
that apply to this equipment. Additional statements, related to specific tasks and procedures, are located throughout the manual.
DANGER: Hazardous voltage. Contact with
hazardous voltage will cause death or severe
personal injury. Follow all locally approved safety procedures when working around high and low voltage
lines and equipment.
G103.3
!
WARNING: Before installing, operating, maintaining, or testing this equipment, carefully read
and understand the contents of this manual. Improper
operation, handling or maintenance can result in
death, severe personal injury, and equipment damage.
!
G101.0
Hazard Statement Definitions
This manual may contain four types of hazard
statements:
DANGER: Indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.
!
WARNING: Indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injury.
!
CAUTION: Indicates a potentially hazardous
situation which, if not avoided, may result in
minor or moderate injury.
!
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in equipment damage only.
2
WARNING: This equipment is not intended to
protect human life. Follow all locally approved
procedures and safety practices when installing or
operating this equipment. Failure to comply can result
in death, severe personal injury, and equipment damage.
G102.1
!
WARNING: Power distribution equipment must
be properly selected for the intended application.
It must be installed and serviced by competent personnel who have been trained and understand proper safety procedures. These instructions are written for such
personnel and are not a substitute for adequate training
and experience in safety procedures. Failure to properly select, install, or maintain power distribution equipment can result in death, severe personal injury, and
equipment damage.
G122.2
!
S275-10-1
SHIPMENT AND ACCEPTANCE
The interrupter is completely assembled, inspected, adjusted, and tested at the factory. It is new, undamaged, and
complete with all parts when accepted by the carrier for
shipment.
Upon receipt, inspect the interrupter thoroughly for damage or loss of parts incurred during shipment. If damage or
loss is discovered, file a claim immediately with the carrier.
HANDLING AND STORAGE
If the unit is to be stored for some time before installation,
keep it covered in a clean, dry storage area. Take care during handling and storage to minimize the possibility of damage.
DESCRIPTION
The Type Cl fault interrupter (Figure 1) is an automatic, nonreclosing, three-phase interrupting device that will interrupt
currents through 12000 amps symmetrical on systems rated
through 38 kV. A compact, lightweight device, the Type Cl
features submersible configuration, a stored-energy mechanism and dry, solid insulated vacuum interrupters.
Line currents are sensed by 1000:1 ratio, encapsulated
bushing current transformers on each phase on the interrupter. This provides a continuous measurement of phase
and ground currents, which are monitored by the Electronic
Trip Control. When the selected minimum-trip current value
is exceeded, and after a time delay, the control sends a trip
signal to the interrupter operating mechanim. Control operating power is also obtained from the BCT’s; thus no external power is required for timing or trip functions. The control
is easily programmed for various minimum trip values and
time-current characteristics for both phase and ground.
The integral galvanized-steel mounting frame with
predrilled mounting holes facilitates wall, floor, or ceiling
mounting. The electronic control, enclosed in a weatherproof (nonsubmersible) cabinet is connected to the interrupter through two shielded plug-in cables and can be
mounted on either side of the interrupter frame or at a
remote location, 100 foot maximum cable length.
High-voltage connections are made to either 200 amp
universal bushing wells or 600 amp bushings depending on
the continuous current rating of the unit. Both bushing configurations
are molded as an integral part of the solid insulation system, and
they interface with industry-standard 200 amp loadbreak and nonloadbreak bushing plug inserts or 600 amp shielded cable connectors.
Interrupter contact opening and closing is through release of
stored-spring energy. Both the opening and closing springs are
charged by a 120 Vac motor which runs automatically immediately
after each opening operation. A push-pull feature on the operating
mechanism permits manual spring charging if motor power is lost.
In addition to automatic tripping on fault current, the Type Cl can
be tripped with either a remote contact, or the manual control
switch on the control panel, or with the mechanically linked tripreset lever on the front of the mechanism tank. It can be closed
with either a remote contact, with the manual control switich on the
control panel, or with the mechanically-linked close lever on the
front of the tank.
Available accessories for the interrupter include a frame extension (which allows the tank to be lowered from a floor mounted
interrupter) and a four-stage auxiliary switch. Control accessories
include dc trip control, X-Y relay control, and instantaneous trip,
target, and inrush restraint modules.
MAINTENANCE REQUIREMENTS
The frequency of maintenance depends upon local climatic conditions and the severity of the operating service imposed on the
interrupter. Cooper Power System's recommends that, initially, a
maintenance check should be made after one year of service, or
the completion of a standard duty cycle, whichever occurs first. A
study of maintenance records for similar equipment and the results
of the initial inspection can then be used to establish routine maintenance intervals. Refer to the applicable maintenance manual for
detailed maintenance and inspection procedures.
WARNING: Continued use of an interrupter, without regular routine inspection and repair, can effect
mechanical reliability. This could lead to equipment failure
and possible personal injury.
!
ELECTRICAL RATINGS
Current
Rating
Description
15.5 kV
Rated continuous current, amps
Interrupting current at rated maximum voltage, symmetrical amps
Rated 3-second current, symmetrical amps
Rated magnetizing interrupting current, amps
Rated cable charging current, amps
Operating voltage
Voltage range
Maximum current
Running current
Running time (average)
600
12000
12000
21
10
200
12000
12000
21
25
38 kV
600
12000
12000
21
25
200
12000
12000
21
40
600
12000
12000
21
40
Bi-Stable Actuator
Spring Charging Motor
Description
200
12000
12000
21
10
27 kV
Rating
120 Vac
104-127 Vac
7 amps rms*
1.6 amps rms*
25 seconds*
Operating Voltage
Peak Current
24 Vdc
0.8 amps
Closing Solenoid
Operating
Voltage
Voltage
Range
Maximum
Current
Coil-on
Time
104-127 Vac
3.4 amps rms
3.0 Cycles
(35 ms)
*60 Hz values (50 Hz values somewhat higher).
120 Vac
3
Type CI; Three-Phase Installation and Operation Instructions
Duty Cycle
Rated Max.
Voltage
15.5 kV
27.0 kV
38.0 kV
Voltage
Percent of
Interrupter
Rating
Minimum
X/R
15-20
45-55
90-100
4
8
15
15-20
45-55
90-100
7
14
15-20
45-55
90-100
4
8
15
Number of
Unit
Operations
88
112
32
Total 232
88
112
32
Total 232
88
112
32
Total 232
Description
Rating
Nominal voltage class, kV rms
Rated maximum voltage, kV rms
Rated impulse withstand voltage, (BIL)
kV crest
60 hertz insulation withstand, kV rms
dry, one minute
DC insulation level withstand, kV rms
dry, 15 minutes
Corona extinction voltage at 20
picocoulombs, kV
14.4
15.5
24.9
27
34.5
38
95
125
150*
35
40
60*
53
78
96
11
19
26 *
*May be limited by cables or terminations.
Description
Interrupter,
including frame
Control
DIMENSIONS AND WEIGHTS
4
Weight (lb)
220
50
S275-10-1
INSTALLATION
Lifting an Interrupter
Factors to be considered before beginning installation
include: available space; whether the interrupter will be wall,
floor or ceiIing-mounted; whether the control will be located
at the interrupter or at a remote location; routing of the highvoltage cables; and the availability of 120 Vac power near
the control.
Follow all approved safety practices when making hitches and lifting the equipment. Lift the load smoothly and do not allow the load
to shift.
This interrupter has two lifting lugs at the top of the integral
frame—both must be used when lifting. Maximum strength is
attained with a vertical lift attached to the lugs. Use a spreader bar
with a fixed attachment point for the hook at the load center.
If a sling is used for lifting the interrupter (as shown in Figure 3),
it must have a fixed attachment point at the load center. Rig the
interrupter so that the sling height is equal to or greater than the
distance between lifting lugs.
Interrupter Mounting
Refer to the DlMENSlONS section of these instructions for
mounting dimensions. Four 1/2-inch bolts and lockwashers
(supplied by customer) are used to secure the interrupter,
whether mounted vertically or horizontally. The four possible
mounting positions are shown in Figure 2. Prepare mounting
holes and anchors and secure unit.
Figure 3.
ILifting an interrupter.
Control Mounting
Figure 2.
Interrupter mounting positions.
The electronic control cabinet can be mounted at either side of the
interrupter frame, or at a remote location with up to 100 feet of
cable. The cabinet is weatherproof, but it is not submersible. The
length of the two cables for electrical interconnection of the interrupter and control was specified at the time of ordering. Standard
five-foot long cables are supplied where the control is to be mounted to the interrupter frame. The cables, regardless of length, are
permanently affixed to the interrupter. Plugs on the free ends mate
with receptacles at the bottom of the control cabinet. The plugs and
receptacles are keyed, eliminating the possibility of incorrect installation. Threaded collars secure the plugs in the connected position.
5
Type CI; Three-Phase Installation and Operation Instructions
Figure 4.
Shemtaic diagram of Type CI interrupter.
6
S275-10-1
The control cabinet is mounted through a vertical U-channel
at the rear of the cabinet. Two mounting holes are provided in
the channel. The upper hole is slotted to permit hanging the
control on the upper bolt while the lower bolt is put in place.
For mounting the control on the interrupter frame, two 5/811 UNC tapped holes are provided in the top crossmembers
of the frame, one at each side of the unit. A right-angle bracket
bolted to the frame below one of these holes contains 11/16
inch hole which aligns with the lower control mounting hole. If
the control
is to be mounted at the other side of the frame the lower bracket
must be unbolted and relocated to that side (bracket mounting
hole is provided in both sides of the frame). Two 2-1/2-inch long
5/8-11 UNC bolts and associated washers and nut are furnished
for mounting the control to the frame.
If the control cabinet is to be mounted away from the interrupter, refer to the DlMENSlONS section of these instructions for
outline and mounting dimensions.
Figure 5.
Operational sequence of contacts in Type CI interrupter.
7
Type CI; Three-Phase Installation and Operation Instructions
Electrical Connection
Before making any electrical connections, perform the following steps:
1. Rotate springloaded manual control switch on control panel
to TRIP and release.
2. Set trip-close lever at right front of mechanism tank to TRIP.
GROUNDING
Begin electrical connection by grounding the interrupter and
control cabinet. The interrupter ground boss is located at the
bottom front center of the mechanism tank. The tapped hole
(1/2-13 UNC thread) will accommodate a clamp-type connector.
The control cabinet is fitted with a clamp-type ground connector at the right rear corner of the bottom surface.
HIGH VOLTAGE
Type Cl Interrupters with a 200 amp continuous current rating
are provided with 200 amp universal bushing wells molded as
an integral part of the encapsulated vaccuum interrupters.
They will accommodate all industry-standard loadbreak and
nonloadbreak bushing plug inserts.
Interrupters with a 600 amp rating are equipped with bushings molded as part of the encapsulated vacuum interrupters.
Whether preparing cable terminations for a 200 amp unit or
a 600 amp unit, follow the procedure recommended by the
connector manufacturer. A ground boss with tapped hole (1/213 UNC thread) for clamp-type connectors is located on the
front face of the unit for grounded neutral cable connections.
Wire with adequate current carrying capacity must be used
for grounding the control, consistent with application.
AUXILIARY POWER
Connection of 120 Vac auxiliary power is accomplished at the
control. A single 120 Vac connection provides all ac power
requirements for both the interrupter and the control. Make connections with power.
Power leads are routed into the control cabinet through a
knockout in the bottom surface. Access to the interior of the
cabinet is achieved by releasing two 1/4-turn fasteners at the
right side of the panel, allowing the hinged panel to swing open.
A diagram of the cabinet interior showing the location of its
major components is presented in Figure 6. All customer connections to the control, including 120 Vac power, are made to
terminal strip T3 on the lower center portion of the rear surface,
just above the knockouts.
CONTROL-INTERRUPTER INTERCONNECTlON
To interconnect circuitry in the interrupter and the control, insert
plugs on two cables extending from interrupter through receptacles at bottom of control cabinet and handtighten plug collars.
REMOTE CONTROL WIRING
Remote control circuitry in the electronic trip control is a standard feature that provides the capability to trip and close from a
remote location. To use this feature, the customer must supply
normally-open momentary trip and close dry contacts at a
remote location and must wire them to the control as shown in
Figures 4 and 6. Remote switch wiring is brought in through
one of the knockouts at the bottom of the cabinet and is connected to terminal strip T3. The appropriate terminals are
labeled on the equipment.
Figure 6.
Layout of control cabinet interior with door open and panel swung out to left.
8
S275-10-1
Leak Testing Tank
INTERRUPTER ACCESSORIES
If the interrupter is installed in a location where it will be submerged, the tank assembly should be leak tested to ensure
that all seals are fluid leak tight.
Frame Extension
CAUTION: Do not pressurize tank assembly
to more than 5 psi. Pressures beyond 5 psi can
cause permanent damage to the tank assembly and
seals.
!
This accessory raises the Type Cl interrupter 13 inches, permitting the tank to be lowered from the mechanism without disturbing
a floor-mounted installation. If a future reinstallation requires a
lower floor mounting or a wall mounting, the extension frame and
associated braces can be removed by simply unbolting them from
the main frame.
Auxiliary Switch
1. Remove plug located on cover assembly, Figure 7.
2. Attach a gas pressure source (nitrogen or clean dry air) to
the pressure fitting and slowly increase the pressure to
between 4 and 4-1/2 psi.
3. Apply liberal amounts of liquid soap solution to all seams,
seals and junctures. Leaks will be evidenced by expanding bubbles. If any leaks are observed, corrective measures must be taken.
NOTE: Pressure will escape through the control cable. As a
result, the pressure source must be maintained throughout the
leak testing sequence.
A four-stage auxiliary switch accessory can be used to provide
remote contact position indication or switching of other devices
coincidentally with interrupter contact opening and closing. Each
stage has two independent sets of contacts: “a” and “b.” When the
interrupter contacts are open, the “a” contacts are also open and
the “b” contacts are closed. The switch is located inside the mechanism tank and a 16~conductor cable is wired to its contacts. The
cable, of a length specified at the time of ordering, extends from a
water-tight seal at the interrupter mechanism cover. Customer
connections to the switch are made at the free end of the cable.
The relationship of switch terminals, switch contacts, and cable
lead color coding is provided in Figure 8.
4. Release pressure, disconnect gas pressure source and
reinstall original plug with fresh sealing tape.
Figure 8.
Auxiliary switch accessory wiring.
TABLE 1
Interrupter Rating of Auxiliary Switch (amps)
Volts
Inductive
ac
Noninductive
ac
24
48
120
125
240
250
50
25
-
80
40
-
Inductive
dc
15
7.5
1.5
0.45
Noninductive
dc
20
10
2
0.5
Figure 7.
Leak testing port.
9
Type CI; Three-Phase Installation and Operation Instructions
CONTROL ACCESSORIES
DC Trip Control
The dc trip control accessory is an internal wiring modification
to the control that replaces standard 120 Vac tripping with tripping at either 24, 48, or 125 Vdc. The dc tripping voltage was
selected at the time of ordering. All electrical tripping becomes
dependent on the dc voltage with this accessory, whether initiated at the control panel manual control switch or at remote
trip and close contacts. The 120 Vac source is still required to
operate the interrupter motor and control cabinet heater.
Customer connections to terminal strip T3 are altered as
shown in Figure 9.
Figure 9.
Wiring of terminal strip T3 with dc trip control accessory.
Figure 10.
Relay control accessory.
Relay Control
The 24-; 48-; or 125-Vdc relay control accessory replaces the
electronic trip control, sensing CTs and interrupter trip circuit
with a dc trip system located within the operating mechanism
cabinet. It provides an X-Y type relay scheme controlled by the
customer’s relay scheme. An 8-conductor cable is supplied
and wired to the interrupter for customer connections for dc
tripping energy, 120-Vac motor power, and trip-closecommands (Figure 10). Cable length was specified when ordered.
Instantaneous Trip Accessory
Sealed plug-in accessory providing instantaneous tripping at
from one to 32 times minimum trip value for phase, ground, or
phase and ground. The standard curve response time is 30
milliseconds, this time does not include the time required for
the interrupter to trip and clear the fault. Operation of this
accessory is not affected by the inrush accessory.
Programming is easily accomplished with rocker dip switches
on the face of the accessory.
Two versions of the instantaneous trip accessory are available. The first, shown installed in Figure 11, has provisions for
independent programming of both phase and ground instantaneous tripping. The second has provisions for programming
phase instantaneous tripping only. On either type, programming of each parameter is accomplished with a seven-switch,
rocker dip switch bank. These miniature rocker switches are
actuated by depressing their raised portion with the point of a
pencil or similar pointed instrument. A clear plastic protective
cover fits snugly over each switch bank.
10
87861KMA
Figure 11.
Instantaneous trip accessory.
S275-10-1
To install the accessory, plug the device into the top
accessory socket, at the right side of the control panel.
Markings on the face of the accessory above each switch
identify six multiplier settings and an on-off switch (Figure
12). A multiplier is in the circuit when the black bar at the top
of the switch, next to the marking, is displayed. The accessory is electrically removed from the circuit when the black
bar on the on-off switch is displayed next to OFF. The
parameter controlled by each switch bank, phase or ground,
is identified to its right.
Figure 12.
Typical instantaneous trip accessory switch bank.
Figure 13.
Instantaneous trip accessory programming examples.
Note in Figure 12 that there are two 1X switches, one of
which is locked in the ‘multiplier in’ position. This assures
that the device can never be set lower than 1X, or that one
times the minimum trip resistance will always be in the circuit. To obtain instantaneous tripping at some desired multiple of the basic minimum trip value, set the multiplier switches so that their sum (including the locked 1X switch) is
equal to that multiple. The switch bank in Figure 12 is programmed for one times minimum trip. Several additional
programming examples are presented in Figure 13.
To disable the accessory, simply set the on-off switch to
OFF, returning control of minimum trip level to the encapsulated minimum trip resistor. The accessory can be left
plugged into the panel with its multiplier setting left for future
use, or it can be removed for use on another Type Cl interrupter installation.
Target Accessory
Sealed plug-in accessory provides “ground,” “phase” or
“instantaneous” indication to identify which function or functions are above their pickup level when fault tripping occurs.
Orange targets, 5/16-inches in diameter, provide indication.
The device resets automatically when a minimum of ten
amps of load current reappears.
To install the target accessory, plug the device into the
center accessory socket, at the right side of the control
panel. It is shown installed in Figure 14. No settings or
adjustments are required, and there is no on-off switch. The
accessory is operational whenever it is plugged into the
panel.
Figure 14.
Target accessory.
87860KMA
11
Type CI; Three-Phase Installation and Operation Instructions
Inrush Restraint Accessory
Sealed plug-in accessory that upon application of line power:
1) disables, or raises by a programmable amount, ground tripping for a programmable time, and 2) raises the phase minimum trip value by a programmable amount for a programmable time to prevent unnecessary tripping due to inrush
current.
Three versions of the inrush restraint accessory are available, refer to Table 2.
TABLE 2
Programming Choices for Inrush Restraint Accessory
Accessory
Number
Multiplier of
Initial Min. Trip
Time to Normal
Initial Min. Trip*
KCF52EC
Phase and Ground
Multipliers of one
through 8-1/2 in
increments of 1/2
1/2 second through
7-7/8 secs. in
increments of 1/2 sec.
KCF52EB
Ground only
Operation disabled
1/2 second through
31-1/2 secs. in
increments of 1/8 sec.
KCF52EA
Phase
Multipliers of one
through 32 in
increments of one
Operation
disabled
1/8 second through
7-7/8 secs. in
increments of 1/8 sec.
1/2 second through
31-1/2 secs. in
increments of 1/2 sec-
Ground
*A limitation exists on the time selections. See Appendix.
The KCF52EA and the KCF52EB accessories will, when line current is first sensed, disable ground tripping for a programmed period of
time, 0.5 to 31.5 seconds, in 0.5 second increments.
The KCF52EA accessory raises the phase minimum trip current
level, when current is first sensed, by a programmed amount, for a
programmed time. The trip level is then linearly returned to normal.
The initial phase minimum trip level can be raised by a multiple of from
1X to 32X of the original level, in increments of 1X. The rest time can
be programmed from 1/8 to 7-7/8 seconds, in 1/8 second increments.
Additional application information is available in the Type Cl Interrupter
Electrical Apparatus section, 275-10.
The KCF52EC accessory raises both ground and phase minimum
trip levels by a programmed amount, for a programmed time, when
line current is first sensed. The trip levels return linearly to their normal
level. Both initial minimum trip levels can be raised individually, by a
multiple of from 1 to 8.5 of the normal level, in 0.5 increments. Unique
reset times, for both phase and ground, can be programmed from 1/8
to 7-7/8 seconds, in 1/8 second increments.
To install the accessory, plug the device into the bottom accessory
socket, at the right side of the control panel. If the accessory is of the
phase and ground type (KCF52EA), its face will appear as shown in
Figure 15. If it is of the ground-only-type, only the switch at the right,
labeled “GD” (ground disable), will be present on the face of the
accessory. In the programming directions that follow, both phase and
ground programming are described. If a ground-only accessory is present, disregard instructions pertaining to phase programming.
On all three switch banks, a multiplier of time is in the circuit when
the black bar at the right of the switch, next to the marking, is displayed. Note in Figure 16 that there are two 1 X switches on the phase
multiplier bank at the left, one of which is locked in the ‘multiplier on’
position. This assures that the phase multiplier can never be set lower
than 1 X, or that one times the minimum trip resistance will always be
in the circuit.
To prevent unnecessary tripping on phase due to inrush currents,
raise the minimum value for an initial time period as follows. Set the
multiplier switches (PM) so that their sum (including the locked 1 X
switch) is equal to the desired multiple of the basic minimum trip value.
Set the phase time switches (PT) so that their sum is equal to the time
in seconds following initial application of power that you desire the
raised minimum trip valueto be in effect. Refer to the programming
examples following for additional information.
12
Figure 15.
Inrush restraint accessory (KCF52EA).
Figure 16.
Typical inrush restraint accessory switch banks.
87859KMA
S275-10-1
The programming panel for this accessory is shown in
Figure 17. Notice that on both the phase and the ground
multiplier switch banks there are two “1” switches, the lower
one on each bank is permanently locked in the “ON” position. This assures that the multiplier is never less than one.
will be in effect for approximately 0.0125 second.
Refer to the programming examples following for additional
information.
EXAMPLES
The following two examples depict the programming of a KCF52EA
accessory. Programming of the KCF52EC accessory would be
essentially the same.
To prevent unnecessary tripping on ground, set the ground disable switches (GD) so that their sum is equal to the time in seconds following initial application of power that you wish to disable
ground tripping. See the programming examples in Figure 19.
To disable the phase portion of the accessory, set all phase time
switches (PT) out of the circuit. Likewise, to disable the ground portion of the accessory, set all ground disable switches (GD) out of
the circuit. The switches shown in Figure 16 are set to disable both
the phase and ground portions of the accessory.
Figure 17.
Inrush restraint accessory (KCF52EC).
To prevent unnecessary tripping due to inrush currents,
raise the minimum trip value for both phase and ground as
follows. See Figure 18, set the multiplier switches (PM and
GM) so their sum (including the locked “1” switch) is equal
to the desired multiple of the basic minimum trip value. Set
the time switches (PT and GT) so that their sum is equal to
the time, in seconds, following initial application of power,
that you desired the raised minimum trip value to be in
effect. If no time switches are actuated the raised inrush
restraint level (as set on the applicable multiplier switches)
Figure 18.
Typical inrush restraint accessory switch banks.
Figure 19.
Inrush restraint accessory programming examples.
13
Type CI; Three-Phase Installation and Operation Instructions
OPERATING PROCEDURES
The interrupter should not be operated or placed into service
until there is a full understanding of its operating procedures.
Mechanism and control levers and indicators referred to in this
section are identified in Figures 20 and 21.
Figure 20.
Front CI interrupter mechanism tank.
87857KMA
Figure 21.
Panel of electronic trip control used with Type CI interrupter.
87858KMA
14
S275-10-1
Mechanical Operation Check
A simple nonelectric test of interrupter operation will assure
that the operator mechanism and the interrupter linkage are
functioning properly. The following procedure may be used.
1. Remove control fuse from 120 Vac fuse block in cabinet
interior to isolate mechanism from electrical system.
2. Check that the interrupter is open. The Contact-Position
Indicator visible from the front of the mechanism tank
should read OPEN.
NOTE: If interrupter is closed, move the Trip-Reset lever at the
front of the mechanism tank to TRIP. This will release a latch in the
mechanism and open the interrupter contacts. The ContactPosition Indicator will then read OPEN.
3. Using the manual closing procedure described in Manual
Closing section, close the interrupter. The Contact-Position
Indicator should read CLOSED.
4. Move the Trip-Reset lever to TRIP. The interrupter contacts
should open and the Contact-Position Indicator should read
OPEN.
Successful completion of the above four steps confirm proper operation of the interrupter operating mechanism.
Electrical Operation Check
The following procedure may be used to check the electrical
operation of the interrupter.
1. Make sure that the Trip-Reset lever on the mechanism tank
is set on RESET.
2. Apply 120 Vac power. Upon application of power, the
springcharging motor will run to charge the closing springs.
3. To close the interrupter, move Manual Control switch on
control panel to CLOSE. The interrupter should close immediately. The red indicator lamp on the control panel should
light and the Contact-Position Indicator at the front of the
mechanism tank should read CLOSED.
4. To open the interrupter, move the Manual Control switch to
TRIP. The interrupter should open.The green indicator lamp
on the control panel should light and the Contact-Position
Indicator in the mechanism tank should read OPEN.
This will release a trip latch in the operating mechanism, allowing the charged opening springs to drive the contacts to their
open position.
The interrupter cannot be closed while the Trip-Reset lever is
in the TRIP position.
IN-SERVICE OPERATION
Initial Operation
To place the interrupter in operation, proceed as follows:
1. Make sure that the control cables extending from the interrupter are connected to the control and the 120 Vac power is
supplied to the control.
2. Make sure that the Trip-Reset lever at the front of the interrupter
mechanism tank is in the RESET position.
3. Move the Manual Control switch on the electronic control
panel to CLOSE. The interrupter will close. The red indicator
lamp on the control panel will light and the indicator flag in the
mechanism will read CLOSED.
Automatic Operation
Once the unit is closed and in service, the electronic control will
automatically trip the interrupter in accordance with the programmed operating characteristics when a phase or ground fault
occurs. While closed, the red indicator lamp on the control panel
will provide a continuous indication of closed contacts. The indicator flag, visible through a viewing port at the front of the mechanism tank, will display CLOSED.
To open the interrupter while it is in service, move the manual
control switch to TRIP. The interrupter will immediately open.
Whether tripped automatically or manually, the green indicator
lamp on the panel and the OPEN position of the mechanism flag
will indicate open contacts.
If the remote control operating feature is being used, operations initiated by the remote trip and close dry contacts will be
identical to those initiated with the Manual Control switch.
Indicator lamp and Contact-Position Indicator displays will also
be the same.
Manual Closing
REMOVINC CONTROL FROM SERVICE
Manual deenergized closing into an energized line, without the
120 Vac supply, can be accomplished with the Push-Pull lever
at the left front of the mechanism tank (Figure 18).
1. If the electronic control is connected, make sure the manual
control switch on the control panel has been moved to the
TRIP position and released.
2. Move Trip-Reset lever, on right front of mechanism tank, to
either the TRIP or RESET position.
3. Pull Push-Pull lever approximately 30 times,or until the
operating spring indicator reads SPRING CHARGED.
4. Move Trip-Reset lever to CLOSE. Interrupter contacts will
close and handle will spring back to the RESET position.
The Electronic Trip Control can be removed from an in-service
interrupter without interrupting service. However, the interrupter
will remain closed, with no fault tripping capability, during the
time that the control is removed. Remove the control from an inservice interrupter as follows:
1. Remove plug-in cables from control.
2. Deenergize 120 Vac supply and disconnect lead wires from
terminal strip T3 inside control cabinet.
3. If remote control wiring is connected to T3, remove lead wires.
4. Remove cabinet ground wire and mounting bolts. Remove
control.
To return control to service remount cabinet, reconnect wiring
removed earlier, reconnect plug-in cables, and apply 120 Vac
power. Fault tripping capability is now restored in the interrupter.
Manual Tripping
A closed interrupter can be manually tripped at the operator
mechanism by moving the Trip-Reset lever at the front of the
tank to TRIP.
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©1995
Cooper Power Systems, Inc. or its affiliates
Kyle is a registered trademark of Cooper Power Systems, Inc. or its affiliates
®
KA2048-45
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KDL
01/06