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ABB CP Series Скачать руководство пользователя страница 3

Type CP Reverse Phase Relay

41-222.2J

3

cient to reduce the relay torque to its low voltage trip
point.

B. INDICATING CONTACTOR SWITCH (ICS)

The indicating contactor switch is a small d-c oper-
ated clapper type device. A magnetic armature, to
which leafspring mounted contacts are attached, is
attracted to the magnetic core upon energization of
the switch. When the switch closes, the moving con-
tacts bridge two stationary contacts, completing the
trip circuit. Also, during this operation two fingers on
the armature deflect a spring located on the front of
the switch, which allows the operation indicator
target to drop. The target is reset from the outside of
the case by a push rod located at the bottom of the
case.

The front spring, in addition to holding the target, pro-
vides restraint for the armature and thus controls the
pickup value of the switch.

An ac indicating contact switch (ACS) is used where
the relay contacts connect to an ac trip or control cir-
cuit.

C. INDICATING VOLTAGE SWITCH (IVS)

The indicating voltage switch has the same construc-
tion as the indicating contactor switch.

3.0

CHARACTERISTICS

The type CF relay has adjustable high and low
voltage contacts which can be set around the periph-
ery of a scale. The ranges of adjustment of the con-
tacts are as follows:

120 volt relay - - - - - - - - - - - - - - - - - - 70 to 120 volts
240 volt relay - - - - - - - - - - - - - - - - - 140 to 240 volts
480 volt relay - - - - - - - - - - - - - - - - - 280 to 480 volts
208 volt relay - - - - - - - - - - - - - - - - - 120 to 220 volts

If either of the adjustable contacts are set for a value
of voltage within these ranges, the relay will just
close its contacts when the balanced three phase
line to line voltages equal this value. For such a con-
dition, the relay is operating at its minimum trip point,
and the operating times on repeated operations are
not repetitive within close tolerances. However, volt-
ages greater than the overvoltage setting or less than
the undervoltage setting, result in relay timing opera-
tions which are consistent for repeated trials.

The relay has inverse timing; that is, the greater the
increase in voltage the faster the relay contacts will
close. Typical time curves for various contact set-
tings are shown in Figs. 6 and 7.

TRIP CIRCUIT

The main contacts will close 30 amperes at 250 volts
d-c and the seal-in contacts of the indicating contac-

Fig. 3.

Internal Schematic of the Type CP Relay in the
Type FT-11 Case.

Fig. 4.

Internal Schematic of the Type CP Relay with
Indicating Contactor Switch in the Low Voltage
Circuit in the Type FT-11 Case.

Sub 1
183A962

Sub 1
183A960

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Содержание CP Series

Страница 1: ......

Страница 2: ...41 222 2J Type CP Reverse Phase Relay 2 Sub 5 184A202 Fig 2 Internal Schematic of the Type CP Relay with Independent Contacts in the Type FT 11 Case Fig 1 Type CP Relay Without Case ...

Страница 3: ...able high and low voltage contacts which can be set around the periph ery of a scale The ranges of adjustment of the con tacts are as follows 120 volt relay 70 to 120 volts 240 volt relay 140 to 240 volts 480 volt relay 280 to 480 volts 208 volt relay 120 to 220 volts If either of the adjustable contacts are set for a value of voltage within these ranges the relay will just close its contacts when...

Страница 4: ... connections may be made directly to the terminals by means of screws for steel panel mounting or to the terminal stud furnished with the relay for thick panel mounting The terminal stud may be easily removed or inserted by locking two nuts on the stud and then turning the proper nut with a wrench For detail information on the FT case refer to Instruc tion Leaflet 41 076 5 0 SETTINGS There are two...

Страница 5: ...ts to insure correct operation of this relay have been made at the factory Upon receipt of the relay no adjustments other than those covered under Settings should be required ACCEPTANCE CHECK The following check is recommended to insure that the relay is in proper working order A CP UNIT 1 Contacts Set the left hand adjustable contact in the center of the scale and adjust the voltage until the mov...

Страница 6: ...drop freely 6 1 ROUTINE MAINTENANCE All relays should be inspected periodically and the time of operation should be checked at least once every year or at such other time intervals as may be dictated by experience to be suitable to the particular application All contacts should be periodically cleaned A contact burnishes S 182A836HO1 is recommended for this purpose The use of abrasive material for...

Страница 7: ...For the 240 volt relay multiply these values by two Similarly for the 480 volt relay multiply these values by four For the 208 volt relay set the high voltage contact on 170 volts and the low voltage contact on 120 volts Apply rated voltage and frequency to the relay to allow the high voltage contact to make Suddenly drop the voltage to zero and adjust the permanent magnet gap until the relay oper...

Страница 8: ...ve Phase 3 Phase 3 or 4 Wire S P D T with ac Independent Voltage Switch in Type FT 11 Case Fig 11 Relay Type CP Reserve Phase 3 Phase 3 or 4 Wire S P D T Contacts with Indicating ac Contactor Switch in Low Voltage Circuit in Type FT 11 Case Sub 1 184A469 Sub 1 184A836 ...

Страница 9: ...Type CP Reverse Phase Relay 41 222 2J 9 Fig 12 External Schematic Diagram of the Type CP Relay in the Type FT 11 Case Sub 1 184A200 ...

Страница 10: ... 222 2J Type CP Reverse Phase Relay 10 Fig 13 Relay Type CP Reverse Phase 3 Phase 3 or 4 S P D T with A C S in Low Voltage Circuit and with A C Independent Voltage Switch in Type FT 11 Case Sub 3 879A900 ...

Страница 11: ......

Страница 12: ...ABB Inc 4300 Coral Ridge Drive Coral Springs Florida 33065 Telephone 1 954 752 6700 Fax 1 954 345 5329 www abb com substation automation IL 41 222 2 Revision J ABB ...

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