Toshiba CV-10HB User manual

TOSHIBA
6F9G0134
INSTRUCTION MANUAL
HIGH-VOLTAGE
VACUUM CONTACTORS
CAPACITOR APPLICATION
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TYPI- . CV-1 OHB
-- .
12kV-32OA--5kA
PIpI: : CV-1OHBL 12kV-32OA-%A
TOSHISA CORPORATION

TOSHIBA
6F9G0134
Read this manual carefully to fully understand the operation.
And keep for maintenance.
WARNING : Never rlsmodel or disassemble the equipment nor mount
nonstalidard components.
This equipment shall only be used inside a metal enclosure (grounded)
in other establishments than domestic , or those that are connected to
the public power source system.
1. GENERAL DESCRIPTION
(1) Ambient condition
The type CV vacuum cc’ntactor is manufactured in accordance with IEC 60470(2000)
The vacuum contactor should be used in the following conditions
Table 1
Normal service condition
-Altitude : Less than 1 OOOm
-Ambient temperature :-5°C min. to +4O”C max.
Its average over a period of 24h
does not exceed ~35°C
-Relative humidity : 45% min. to 05% max.
-Vibbration : 20Hz -9.8m/s2 or less
CAUTION : Do not use in condition other than those specified
above , please consult
(2) Locative condition
The location where the contactor is to be installed should be free from dust.
Corrosive gas and moi:sture.
When it is be used in a chemical plant or in outdoor panels,
take necessary precautions against corrosion,
water seepage and condensation.
See page 2.
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TOSHIBA
6F9G0134
2. PRECAUTIONS IN SPECIAL APPLICATION (outdoor cubicle etc.)
In application, check the follow items, please carry out the maintenance
frequently. or perform the countermeasure.
(Visual inspection: once a month, regular inspection: once a year)
Table 2Precaution in special application
I!
Special condition Instance Caution items
Zontamination
Sea breeze
Dust, iron-dust etc.
is very more place.
Place where suffer the
sea breeze.
Reduction of ventilation
Setting of ventilation for
sea breeze.
Frequent inspection.
+gh humidity Place where very more
snow and ice.
More humidity.
Place where near the
cooling tower.
Place where cause changing
the temperature suddenly.
Setting the space heater.
Setting the ventilation.
Prevention of flooding
into the cable pit.
Zorrosion gas Corrosion gas which come
into the airport, chemical
Industry and water cleaning.
(EX.)
S02, Cl2 ,N02
Protection from corrosion
gas
Anti-gas treatment.
Examination of c,hanging
of the insulation material.
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TOSHIBA
6F9G0134
3. RECEIVING AND UNPAKING
WARNING : If any parts are damaged or missing.
Make the following checks after unpacking :
(1) Check if there is any damage , foreign matter trapped , or water seepage
into the contactor.
(2) Check the nameplate to see if the specifications on the plate are correct.
(3) Check the contact wear gauge and control cable
(4) Check the tripping rod (Latched type)
4. STORAGE AND P;ANDLING
When the contactor is to be stored over a long period , the storage area
should be dry and (dust free area.
If the contactor is left outdoors or in adverse conditions , corrosion
from gas , rust or insulation deterioration may result.
CAUTION : In handling , do not throw or drop contactor.
The contactor may break.
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TOSHIBA
6F9G0134
5. INSTALLATION
When installing , protect from dust. Particularly when the contactor
is installed while the building is under construction , shield it from
cement dust and other foreign matter.
The following precautions should be taken.
(1) The mounting surface must be horizontal (level : less than *I mm).
When the mountinlg surface is not horizontal , adjust with spacers.
(2) There are four mounting holes.
Use Ml0 bolts to securely mount the contactor.
(3) In wiring the main circuit terminals , ground terminals and control
circuit , wires should be given sufficient length to be flexible.
The ground wires should be more than 5.5mm in cross section.
(4) Do not mount the contactor with its front inclined downward.
This may result in rnalfunction.
(5) Do not touch the vacuum interrupter surface with soiled hands.
(6) When it is applied to a capacitor load , be sure to used a space heater
to keep humidity low.
CAUTION : Do not install on energize contactor that has been bad condition
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TOSHIBA
6F9G0134
6. RATING
t
t
t
DANGER : Do not exceed the ratings specified on the contactor.
Table 3 Ratings
Type- form
Operating mechanism
Rated operation voltage
Rated insulation level
Rated operational curre
Thermal current
Rated frequency
Rated short-time withsti
Rated making capacity
Rated breaking capacio
Short-circuit making ant
Withstand overload cur,
Mechanical operation
Rated supply voltage Closing voltage lOO-240VAC
1 OO-ZOVDC
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TOSHIBA
6F9G0134
7. OUTLINE DFiAWlG
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TOSHIBA 6F9G0134
8. STRUCTRE

6F9G0134
9. OPERATlON
The drive unit for the electromagnet is installed in the bottom frame.
Molded and wired on the printed circuit.
The closing circuit can be operated using either in AC or DC by the drive unit.
The optional latch trip circuit uses DC as standard.
When a latched contactor is operated using AC power, it is recommended that a
Capacitor trip device be used.
The standard operating voltage is as follows:
Non-latched typel:normally energized) : lOO-240VAC/lOO-220VDC
Latched type :lOO-240V AC /lOO-250V DC closing voltage
:lOO-IlOV DC tripping voltage
Diode
(Latched 1 ype)
Fig.3 Internal Configuration of Drive Unit
CAUTION : Do not touch the drive unit without trouble.
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TOSHIBA
6F9G0134
(1) CONNECTION OF CONTROL POWER SUPPLY
Fig.4 and Fig.5 show the internal connections of the normally energized type
latched type respectively.
According to there figures, connection should be made of the control power
supply and open / close command contact (power relay contact).
Fig.4 Internal connection of the normally energized type.
Fig.5 Internal connection of latched type.
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TOSHIBA
6F9G0134
(2) STANDARD OF’ERATION CIRCUIT
Shown below are the vacuum contactor and its auxiliary circuits (control and
monitoring).
Fig.5 represents the standard operation circuit of the normally energized type
and Fig.6 the latched type.
Wiring should bls done according to these circuit diagrams.
Fig.6
Standard operation circuit of normally energized type.
NOTE:. Be sure to use quickly AC auxiliary relay contact NO for self- holding.
If the self- holding circuit is formed by using the auxiliary contact No
of the vacuum contactor , welding of the main contact may result when
the st,art button is pushed incompletely(refer to *l in Fig.6).
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TOSHIBA
6F9G0134
(a) Shunt trip
i
(b) Capacitor trip
Fig.7 Standard operation circuit of latched type.
NOTE : 0 Electrical trip-free circuit must be prepared outside the contactor.
@ A stable DC power source such as battery is recommended for the
control circuit.
if DC power source is not available, employ a AC closing and a
Caloacitortrip.
l Be :sure to use the control connector between No.3 and No.1 3
(auxiliary contact) for trip circuit.
Connect the control connector between No.5 and No.15
(auxiliary contact) for control relay circuit,
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TOSHIBA
6F9G0134
10. Trial operation
Warning : Make sure main power is OFF.
After mounting and wiring of the vacuum contactor, make the following inspections.
1) Check for any loclse connections.
2) Check for any wiring errors. Perform this test with only the control circuit energized.
confirm that the csperation is correct. For the latched type contactor, check that the
latch correctly eqages and trips when the close/trip signals are applied. Also,
manually trip the contactor using trip lever to verify proper operation.
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TOSHIBA
6F9GOj 34
11.
INSPECTION AND MAINTENACE
To maintain the function and performance of the vacuum contactor for a long period
of time, the following inspections and maintenance procedures are recommended.
The intervals between inspections may vary depending on the conditions of use and
the environment under which the contactor is used. The initial inspection should be
carried out within one year of the start of equipment operation, and the succeeding
check intervals should be determined according to the result of the initial inspection,
See Section 2 for use under special environment as in outdoor cubicles,
(1) Patrol Inspection(every 1-6 months)
With the rcubicle energized, visually check from out side the cubicle according to
the check. list of Table 4,5.
WARNING : When opening the door of the cubicle, do not come close
to danger area.
Table 4 Patrol inspection items
Check item
Abnormal noise
r
Abnormal smell
What to check
Check if corona discharges or operation
magnets are not producing noise.
Check if corona discharges or overheat are
not producing abnormal smell.
Table 5 Patrol inspection items(cont.)
What to check
Open/close indication
Is there not any discoloration due to
overheat?
Is there not any crack, break or dislocation
of insulating material or operation tools?
Is the OPEN/CLOSE indication l(lamp)
normal?
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6F9G0134
(2) Periodical Inspection/Detailed Inspection(every 1-2 years or every
20,000 operations)
The facility should be removed out of service and perform inspection
According to the instruction given in Table 6.
: Contact with energized components can cause
or death.
Turn-off and lock out primary and control
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TOSHIBA
6F9G0134
Table 6 Periodical inspection and detailed inspection
What to do
Replace broken
Parts.
dust adheres to the
Under dusty environments,
frequent inspection
Clean.
Check for wear, loose or
Check bye sight. Clean parts and
remove foreign
check correct matters.
Pour oil in
Also check loose Adequate amount.
Discoloration of terminal
and coupling conductor,
Retighten.
If necessary,
investigate the
cause and replace
parts.
Replace vacuum
Interrupter.
Clean.
If found abnormal,
inform the maker.
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TOSHIBA
6F9G0134
LOG
Control
equipment
Insulation
resistance
Dielectric
strength
on
wiring
Auxiliary switch
Drive unit
Main circuil
Operation
circuit
Main circuit
3penlclose operation
meinspect
Check for discoloration
and tightness.
Amount of dust attache<
Overheat, discoloration.
Measure insulation
resistance between
phases, between
electrodes and between
circuits and ground.
(Measurement is taken
by 1 OOOV megger.)
Measure insulation
resistance between
circuits and ground.
(Measurement is taken
by 500V megger.)
Measure dielectric
strength between phase
between electrodes and
between circuits and
ground.
Perform open/close
operation by electric
operation test to confirrr
the correct operation.
I
A. (
(
I
,
I
I
!S, .
1
3ecision criteria
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Check by sight.
Check by sight.
Wore than 50M R
More than 1 M Q
V2 1.5E for
IO minutes.
I
I
I
I
\
I
t
I
(
I
_ i
I
I
I
(
I
r
What to do
3etighten.
3eplace if damage
s excessive.
‘replace if abnorm; al
I
Nhen the insulatio
.esistance is
lelow the standarc
evel, investigate tt
:ause and, if
iecessary, replace
Jar-is.
nl
I
ie
f found abnormal
nform the maker.
f found abnormal,
:heck and repair.
f necessary,
,eplace faulty parts
i
Remarks: For extraordinary (unscheduled) inspections , pick up check items from the above table.
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TOSHIBA
6F9GOlf34
Table 7 Gap/wipe standard value
Parts
Vacuum
__
interrupter
12. CRITERIA FOR DURABILITY
(1) Electrical service life
The electrical service life of the vacuum interrupter is defined by the electrode wear the
number of open/close operations (mechanical life).
To determine the ele’ctrode wear, measure the gap between the lever and washer
(dimension A) in a closed start , as shown in Figure8. With the vacuum interrupter
closed, if a contact wear gauge or a 1 .Omm thickness gauge cannot be inserted ,
this means the end of life is reached.
For the components listed below, replacement or detailed inspection and cleaning
are recommended after the indicated number of operations.
Table 8 Electrical service life
F
Vacuu
t
Auxilia
Drive t
Movab
I
Hence, parts should be replaced around trical service life operations.
CONTACT SPR,
WASHER (b.48)
Fig.8 Parts to be inspected
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6F9G0134
(2) Mechanical service life
The normally energized type has the mechanical service life of 0.25 million operations ,
and the latch type 0.25 million operations. (The mechanical service life of the vacuum
interrupter is lOO,C100 operations.)
For the components listed below, replacement or detailed inspection ancl cleaning are
recommended after the indicated number of operations.
Table 9Recommended replacement parts
Parts na
Vacuum
Auxiliary
Movable
Latch ml
Closing/:
Movable
Stationa
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TOSHIBA
6F9G0134
(3) Service life of cap83citor
Opening and closing of the capacitor produces sever conditions for contactors,
such as high frequency inrush current and interpole recovery voltage more than
twice the normal voltage.
The criteria of the maximum number of the capacitor current switching operations
is shown in the graph below. The vacuum interrupter should be replaced when the
number of switching operations in the graph is reached.
switching current (A)
Fig.9 Capacitor switching life
(with 6% reactor)
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