Type 230 Combination Controller(PDF)
The Type 230 is for indoor applications and features one-high arrangement, industrial-use enclosure.
The Type 230 is for indoor applications and features one-high arrangement, industrial-use enclosure.
SCOPE & SUMMARY
This bulletin outlines applications, design features, equipment arrangement, and space planning, for the type 230 controllers. These controllers are for the control and protection of induction motors or transformers on 2300-4160-volt systems.
Each type 230 controller is a coordinated combination of heavy-duty vacuum contactor, thermal overload relay, current transformers, and current-limiting fuses, with safety-interlocked isolating switch. The power elements are arranged vertically, for easy and safe installation and maintenance. Each controller requires only a 20" square of floor space.
APPLICATIONS
GENERAL The 230 controller provides full-voltage, non-reversing, magnetic starting and protection for induction motors. Or it may be used to switch and protect transformers. Alternate designs are available for synchronous motor control, reduced voltage starting, and other special applications.
SYSTEM CAPACITY These controllers may be used on power systems capable of producing fault currents up to 80,000‑amps RMS asymmetrical. On a 3‑phase basis, that corresponds to 200,000‑KVA at 2300‑volts and 350,000‑KVA at 4160‑volts for symmetrical current calculations. This assumes 1.6 ratio between asymmetrical current and initial symmetrical current, for first-cycle fault interruption.
LOCATION The 230 controller is ideal for indoor locations. In a minimum floor space, the design provides the safety and maintainability of one-high construction. The 230 needs only 2.78 square feet of floor space with working space required only in the front of the controller.
LOADS The 230‑PM controller is made in two ratings: 180‑amp and 360‑amp. The 360‑amp rating may be used for up to 1500‑HP, 2300‑V, or 2500‑HP, 4160‑V. These general limits are for motors with 1.15 service factor and up to a 6.5 ratio of locked-rotor current to full-load current.
DESIGN FEATURES
GENERAL Each 230 Controller is a coordinated combination of a heavy‑duty vacuum contactor, thermal overload relay, current transformers, and current limiting fuses, with safety-interlocked isolating switch. These major elements, with the accessory parts, are metal-enclosed, factory assembled, and interconnected. The controller is front‑connected with all parts readily accessible. The power elements are arranged vertically for easy and safe installation, operation, and maintenance.
OPERATION A electromagnetically-operated vacuum contactor is the power switching element. The contactor, through a DC master relay, is controlled by the customer's 115‑VAC pushbutton or other master element. Optionally, start and/or stop control switches may be included in the controller. The contactor stays closed on momentary voltage dips but opens on prolonged loss of voltage.
PROTECTION Three main-line fuses and two control transformer primary fuses provide high-speed fault protection with current-limiting effect. A 3-element thermal overload relay provides running overcurrent protection. The fuses are coordinated with the overload relays, so the contactor interrupts any overcurrents up to locked-rotor current and the fuses interrupt on fault currents. Optionally, an instantaneous ground-fault current relay provides ground overcurrent protection on resistance or impedance grounded systems.
SAFETY The isolating switch is manually operated to isolate the controller and the circuit from the power supply. The isolating switch may be padlocked open or closed. The enclosure may be padlocked closed. A viewing window permits checking the isolating switch position, with the enclosure door closed. Mechanical interlocks prevent opening the door before opening the isolating switch or closing the isolating switch with the door open. An ammeter shows load current.
CONSTRUCTION
GROUPING When grouped, each controller is in a separate enclosure, and the adjacent enclosures are bolted together. Grouped controllers are equipped with self-contained, interconnecting main-bus. Controllers may be grouped side-by-side and/or back-to-back.
LIVE PARTS BARRIER When the isolating switch is open and the door may be opened, the line contacts of the isolating switch and the incoming‑line terminals or bus, are the only parts still energized. These parts are at the top of the cabinet. Accidental contact with these energized parts is prevented by a vertical, grounded "Live Parts Barrier" and by a horizontal barrier.
ISOLATING SWITCH The safety interlocked isolating switch is 3-pole, gang-operated, with external operating handle. Contact travel is vertical, and the air-gap is easily seen when the switch is open. To prevent accidental operation under load, the isolating switch and the main contactor are mechanically interlocked with a control-power switch. Unless the interlock is defeated, the isolation switch may be opened or closed only when the control-power switch is in the "stop" position and the main contactor is "open".
FUSES The high-voltage fuses are fixed-position, ribbon element, totally-enclosed, and non-vented. When these fuses operate, there is no noise and any pressure generated is self-contained. These fuses exhibit an increase in resistance immediately after melting, so that they have a current limiting effect on major short circuits.
OVERLOAD RELAYS The 3-element thermal overload relay is ambient-compensated type . The current-elements are energized from current transformers. The relays are normally arranged for automatic reset when used in 3‑wire control schemes. Optionally, the relays may be arranged for external, manual reset.
EQUIPMENT ARRANGEMENT
Mounted in the Control Cabinet as standard:
L1/3 Incoming Line Connectors
BUS Main Bus
ISW Isolating Switch with Interlocks
MFU Main Line Fuse
M Main Contactor
TFU Transformer Primary Fuse
CPT Control Power Transformer
CT Current Transformer
T1/3 Load Terminal Connector
CSW Stop-On Control-Power Switch
CFU Control Fuse
TB Control Terminal Block
REC Rectifier for Contactor Coil
RES Resistor for Contactor Coil
OL Overload Relay
m Auxiliary Contact on Contactor
MCR Master Control Relay
CREC Rectifier for MR
AM Ammeter
Optional Features Include:
A C Ammeter Transfer Switch
A C Voltmeter
A C Voltmeter Transfer Switch*
Application Nameplate 3" x 8"
Cabinet Space Heater
Capacitators for Power Factor Correction*
Extra Auxiliary Contacts
Extra Potential Transformer and Fuses*
Foreign Voltage Switch
Ground Fault Current Transformer
Ground Fault Relay
Hand‑Off Auto Selector Switch
Indicating Lights
Manual-Reset of Overload Relay
Start & Stop Control Switches
Surge Arresters*
Time‑Delay Reclosing Circuit
Watthour Meter*
*Feature may require auxiliary cabinet
SCHEMATIC DIAGRAM
This bulletin outlines applications, design features, equipment arrangement, and space planning, for the type 230 controllers. These controllers are for the control and protection of induction motors or transformers on 2300-4160-volt systems.
Each type 230 controller is a coordinated combination of heavy-duty vacuum contactor, thermal overload relay, current transformers, and current-limiting fuses, with safety-interlocked isolating switch. The power elements are arranged vertically, for easy and safe installation and maintenance. Each controller requires only a 20" square of floor space.
APPLICATIONS
GENERAL The 230 controller provides full-voltage, non-reversing, magnetic starting and protection for induction motors. Or it may be used to switch and protect transformers. Alternate designs are available for synchronous motor control, reduced voltage starting, and other special applications.
SYSTEM CAPACITY These controllers may be used on power systems capable of producing fault currents up to 80,000‑amps RMS asymmetrical. On a 3‑phase basis, that corresponds to 200,000‑KVA at 2300‑volts and 350,000‑KVA at 4160‑volts for symmetrical current calculations. This assumes 1.6 ratio between asymmetrical current and initial symmetrical current, for first-cycle fault interruption.
LOCATION The 230 controller is ideal for indoor locations. In a minimum floor space, the design provides the safety and maintainability of one-high construction. The 230 needs only 2.78 square feet of floor space with working space required only in the front of the controller.
LOADS The 230‑PM controller is made in two ratings: 180‑amp and 360‑amp. The 360‑amp rating may be used for up to 1500‑HP, 2300‑V, or 2500‑HP, 4160‑V. These general limits are for motors with 1.15 service factor and up to a 6.5 ratio of locked-rotor current to full-load current.
DESIGN FEATURES
GENERAL Each 230 Controller is a coordinated combination of a heavy‑duty vacuum contactor, thermal overload relay, current transformers, and current limiting fuses, with safety-interlocked isolating switch. These major elements, with the accessory parts, are metal-enclosed, factory assembled, and interconnected. The controller is front‑connected with all parts readily accessible. The power elements are arranged vertically for easy and safe installation, operation, and maintenance.
OPERATION A electromagnetically-operated vacuum contactor is the power switching element. The contactor, through a DC master relay, is controlled by the customer's 115‑VAC pushbutton or other master element. Optionally, start and/or stop control switches may be included in the controller. The contactor stays closed on momentary voltage dips but opens on prolonged loss of voltage.
PROTECTION Three main-line fuses and two control transformer primary fuses provide high-speed fault protection with current-limiting effect. A 3-element thermal overload relay provides running overcurrent protection. The fuses are coordinated with the overload relays, so the contactor interrupts any overcurrents up to locked-rotor current and the fuses interrupt on fault currents. Optionally, an instantaneous ground-fault current relay provides ground overcurrent protection on resistance or impedance grounded systems.
SAFETY The isolating switch is manually operated to isolate the controller and the circuit from the power supply. The isolating switch may be padlocked open or closed. The enclosure may be padlocked closed. A viewing window permits checking the isolating switch position, with the enclosure door closed. Mechanical interlocks prevent opening the door before opening the isolating switch or closing the isolating switch with the door open. An ammeter shows load current.
CONSTRUCTION
GROUPING When grouped, each controller is in a separate enclosure, and the adjacent enclosures are bolted together. Grouped controllers are equipped with self-contained, interconnecting main-bus. Controllers may be grouped side-by-side and/or back-to-back.
LIVE PARTS BARRIER When the isolating switch is open and the door may be opened, the line contacts of the isolating switch and the incoming‑line terminals or bus, are the only parts still energized. These parts are at the top of the cabinet. Accidental contact with these energized parts is prevented by a vertical, grounded "Live Parts Barrier" and by a horizontal barrier.
ISOLATING SWITCH The safety interlocked isolating switch is 3-pole, gang-operated, with external operating handle. Contact travel is vertical, and the air-gap is easily seen when the switch is open. To prevent accidental operation under load, the isolating switch and the main contactor are mechanically interlocked with a control-power switch. Unless the interlock is defeated, the isolation switch may be opened or closed only when the control-power switch is in the "stop" position and the main contactor is "open".
FUSES The high-voltage fuses are fixed-position, ribbon element, totally-enclosed, and non-vented. When these fuses operate, there is no noise and any pressure generated is self-contained. These fuses exhibit an increase in resistance immediately after melting, so that they have a current limiting effect on major short circuits.
OVERLOAD RELAYS The 3-element thermal overload relay is ambient-compensated type . The current-elements are energized from current transformers. The relays are normally arranged for automatic reset when used in 3‑wire control schemes. Optionally, the relays may be arranged for external, manual reset.
EQUIPMENT ARRANGEMENT
Mounted in the Control Cabinet as standard:
L1/3 Incoming Line Connectors
BUS Main Bus
ISW Isolating Switch with Interlocks
MFU Main Line Fuse
M Main Contactor
TFU Transformer Primary Fuse
CPT Control Power Transformer
CT Current Transformer
T1/3 Load Terminal Connector
CSW Stop-On Control-Power Switch
CFU Control Fuse
TB Control Terminal Block
REC Rectifier for Contactor Coil
RES Resistor for Contactor Coil
OL Overload Relay
m Auxiliary Contact on Contactor
MCR Master Control Relay
CREC Rectifier for MR
AM Ammeter
Optional Features Include:
A C Ammeter Transfer Switch
A C Voltmeter
A C Voltmeter Transfer Switch*
Application Nameplate 3" x 8"
Cabinet Space Heater
Capacitators for Power Factor Correction*
Extra Auxiliary Contacts
Extra Potential Transformer and Fuses*
Foreign Voltage Switch
Ground Fault Current Transformer
Ground Fault Relay
Hand‑Off Auto Selector Switch
Indicating Lights
Manual-Reset of Overload Relay
Start & Stop Control Switches
Surge Arresters*
Time‑Delay Reclosing Circuit
Watthour Meter*
*Feature may require auxiliary cabinet
SCHEMATIC DIAGRAM
SPACE PLANNING
SPACE REQUIRED Each controller is 20" wide by 20" deep by 90" high. When open, the door projects 17". Working space is required only in the front of the controller.
CONDUIT ENTRANCES The incoming-line conduit may enter from overhead or underground through an entrance box provided on the side of the controller. Load and control conduits may enter from overhead or underground. The conduit entrances are located so that all components may stay in place conveniently even when installing cables.