IB 6.2.11.1-2C Page 3 INTRODUCTION BASIC HANDLING The KP-32/40 family of circuit breakers are low voltage power circuit breakers featuring draw-out construction and the MPSC-2000 microprocessor- Once the circuit breaker has been unbolted and based trip system with RMS sensing. These circuit removed from its shipping carton, it should be turned breakers can be furnished with either electrically...
IB 6.2.11.1-2C Page 4 can then be operated to close the circuit breaker Circuit Breaker Nameplates (Figure 1, Item 4). The contacts. circuit breaker nameplates contain information regarding the manufacturer's name and address, type Padlocking Device (Figure 1, Item 13). All K-Line of circuit breaker design, serial number of circuit Plus circuit breakers are equipped with means of breaker, continuous current rating of frame size, short...
IB 6.2.11.1-2C Page 6 Figure 2. K-Line Plus Typical Composite Schematic (Electrically Operated) Spare Auxiliary Switch Contacts (see notes) Motor+ Close+ Trip+ CSCS TRIP COIL CSCS CLOSE COIL Motor- Close- Trip- Local Electrical Trip & Close (Optional) Undervoltage Trip Device (Optional) UVD wiring internal to the breaker is dependent on the UVD model and voltage.
IB 6.2.11.1-2C Page 7 Table 1. K-Line Plus Secondary Disconnect Assignments Description Description Notes: Charge Motor + Undervoltage Trip Device + (1) These assignments provided for reference only, Shunt Trip - Undervoltage Trip Device - and may be changed due to Close Coil + (MPSC-2000 4WG or DESP) special requirements.
IB 6.2.11.1-2C Page 8 the following devices. Electrical characteristics can be (Continued from page 4) found in Table 2. Manual Close Lever (Figure 1, Item 12). The manual Solid State Control Device (SSCD) - The SSCD is close lever is provided on all circuit breakers to provide mounted on the lower-left portion of the operating a safe means of closing the breaker without control mechanism of EO circuit breakers, and controls the...
IB 6.2.11.1-2C Page 9 four "b" contacts (with three “a” and two “b” contacts given time in long time, short time, and/or ground, then available customer secondary tripping occurs by sending a signal to the magnetic disconnects). switch mechanically latch. Instantaneous tripping occurs in the same interconnected with the circuit breaker mechanism such manner, but without the time delay.
IB 6.2.11.1-2C Page 10 ensure the correct functionality of the breaker. is programmed into the MPSC-2000. "Watchdog" example, it is not possible to disable both the circuits guard against the possibility of microprocessor instantaneous and short time elements simultaneously. disfunction due to "endless loops”. A red light emitting Also, the long time element cannot be disabled.
IB 6.2.11.1-2C Page 11 5. With the local or remote close signal still applied, the (8). anti-pump feature of the SSCD “locks out” the close coil. In doing so, the circuit breaker mechanism will not Open compartment door and lower the right and left pump should it close into a faulted circuit.
IB 6.2.11.1-2C Page 12 continue as follows: With circuit breaker in "OPEN" WARNING WARNING WARNING WARNING position and motor disconnect switch (14) in "OFF" position, insert racking crank (8) in opening and press DE-ENERGIZE BOTH PRIMARY AND CONTROL down drawout lever (11). Rotate the racking crank CIRCUITS BEFORE MAKING ANY INSPECTIONS, clockwise until lever (11) moves up and cranking is...
IB 6.2.11.1-2C Page 13 Arc Chutes a. Remove the two arc chute mounting screws and retainer moldings. Lift arc chute (1, Figure 1) up and draw out. b. Inspect for breakage of the arc chute frame or retainer molding. Check for presence of foreign particles such as chips of metal.
IB 6.2.11.1-2C Page 14 cannot be operated when shutter is open. d. Use a stick to hold the spring retainer bracket toward the front of the breaker and in place while pulling the manual close lever (12) to discharge the closing springs.
IB 6.2.11.1-2C Page 15 i. Re-install arc chutes. Operating Mechanism The circuit breaker mechanism is adjusted at the factory for correct operation and should not be disturbed unless necessary. FOR SAFETY: Keep hands clear of all moving parts. Serious injuries can result if a person comes in contact with breaker parts when the breaker is being opened or closed, or closing springs are being charged or discharged.
6. These procedures are written for primary injection. If the trip device is being tested by secondary current WARNING WARNING WARNING WARNING injection, contact ABB for special instructions and/or RISK TO PERSONNEL AND FIRE CAN RESULT IF test equipment. THE CIRCUIT BREAKER IS ENERGIZED WITHOUT THE HARNESS PLUG AND SCREWS IN PLACE.
IB 6.2.11.1-2C Page 17 switch settings. 6. Set the ST Curve to IIT. (Note that the I t function of the MPSC-2000 Short Time element is operational only Long-Time Threshold Test from twice to four times the Range Selection, and that the trip curve is fixed and does not vary with pickup 1.
NO-OX-ID during maintenance periods. 4. Condition Of Circuit Breaker To Be Tested. NO-OX-ID is available from ABB in one pint cans, part Dielectric tests shall be made on a new, completely number 713222A00. assembled circuit breaker and not on individual parts.
Cleaning the motor will restore dielectric integrity. iii. Do not perform dielectric testing on the solid state trip system. RENEWAL PARTS ABB recommends only those renewal parts be stocked that will be required to insure proper and timely maintenance of the breaker.