Biddle CB-8100-Series_UG 电路图.pdf

Part No. 12460 Rev. 0 INSTRUCTION MANUAL For CIRCUIT BREAKER TEST SETS MODEL CB-8100 SERIES SERIAL NO. It is essential that this instruction book be read thoroughly before putting the equipment in service. RadioFans.CN 收音机爱 好者资料库 Part No. 12460 Rev. 0 IMPORTANT The information and data contained within this instruction manual are proprietary with MULTI- AMP Corporation. The equipment described herein may be protected by one or more U.S. letters patent. MULTI-AMP specifically reserves to itself all rights to such proprietary information as well as all rights under any such patent, none of which is waived by the submission of this instruction manual to anyone. The recipient, if a Government agency, acknowledges that this instruction book and the equipment described were procured with Limited Rights to technical data as described in ASPR 9-203 (b). Copyright MULTI-AMP Corporation, 1980, 1982, 1986, 1987 RadioFans.CN 收音机爱 好者资料库 Part No. 12460 Rev. 0 i TABLE OF CONTENTS Section Page I. Introduction A. General Description . Bulletin B. Specifications . Bulletin II. Description of Controls and Instrumentation A. General Description . 1 B. Controls and Instrumentation . 1 C. Ammeter Circuit . 4 III. Input and Output Circuits A. Input . 5 1. Input Voltage . 5 2. Input Leads . 5 3. Grounding. 5 4. Safety Precautions . 6 B. Output 1. Selection of Output Connections . 7 2. Output Connections . 8 3. Duty Ratings and Overload Capabilities . 8 IV. Test Procedures A. Testing Motor Overload Relays . 11 B. Testing of Low Voltage Circuit Breakers . 14 V. Maintenance of Protective Apparatus A. Maintenance of Motor Overload Relays . 18 B. Maintenance of Molded Case Circuit Breakers . 21 C. Maintenance of Low Voltage Circuit Breakers . 22 D. Suggested Test Forms . 24 E. Service Data . 25 VI. Schematic Drawing RadioFans.CN 收音机爱 好者资料库 Part No. 12460 Rev. 0 1 DESCRIPTION of CONTROLS and INSTRUMENTATION General Description: Multi-Amp Circuit Breaker Test Sets are portable high current units designed for testing and adjusting low voltage circuit breakers and other current actuated devices. The units incorporate a variable high current ac output, solid state output initiating and timer initiation circuitry, electronic digital timer, multi-range memory ammeter and circuitry to monitor contact closure or opening. The units are self protected against overloads and short circuits. Controls that is, 30 minutes ON followed by 30 minutes OFF. In other words, the equipment can supply rated output current for a maximum period of 30 minutes ON provided a 30 minute cooling OFF period follows. This is a satisfactory basis of rating for testing of circuit breakers and primary injection testing of relay and current transformers. When Multi-Amp equipment is being used for heat runs on cables, busbars, terminations, etc., the 30 minute ON time will be exceeded. In such cases the output current should be limited to 70 percent of the rated output current and may be continued for an indefinite time. In addition to the continuous duty rating defined above, all units have considerable short- time overload capability. Duration of the overload is governed by thermal considerations within the test set. The maximum current available is determined essentially by the Part No. 12460 Rev. 0 12 impedance of the load. The duty cycles of the CB-8100 series is as follows: Part No. 12460 Rev. 0 13 DUTY CYCLES ON CB-8100 SERIES 60 HZ CIRCUIT BREAKER TEST SETS (Current Rating Through Circuit Breaker) CB-8115 CURRENT TIME ON TIME OFF 2,240 A 3,200 A 4,500 A 7,500 A 15,000 A Continuous 30 min. 15 min. 1 min. 3 sec. N/A 30 min. 45 min. 12 min. 3 min. CB-8130 CURRENT TIME ON TIME OFF 3,000 A 4,500 A 6,000 A 15,000 A 30,000 A Continuous 30 min. 15 min. 2 min. 5 sec. N/A 30 min. 45 min. 60 min. 12 min. CB-8160 CURRENT TIME ON TIME OFF 4,500 A 6,250 A 10,000 A 30,000 A 60,000 A Continuous 30 min. 15 min. 2 min. 5 sec. N/A 30 min. 45 min. 60 min. 12 min. THERMAL SET POINTS* Normal: 72 to 80F Warning: 150 to 180F Shutdown: 220 to 248F *Temperature measured at output stabs adapter plates. Part No. 12460 Rev. 0 14 DUTY CYCLES ON CB-8100 SERIES 50 Hz CIRCUIT BREAKER TEST SETS (Current Rating Through Circuit Breaker) CB-8116/8117 CURRENT TIME ON TIME OFF 2,223 A 3,162 A 4,446 A 7,410 A 14,820 A Continuous 30 min. 15 min. 1 min. 3 sec. N/A 30 min. 45 min. 12 min. 3 min. CB-8131/8132 CURRENT TIME ON TIME OFF 2,964 A 4,446 A 5,928 A 14,820 A 29,640 A Continuous 30 min. 15 min. 2 min. 5 sec. N/A 30 min. 45 min. 60 min. 12 min. CB-8161/8162 CURRENT TIME ON TIME OFF 4,446 A 6,175 A 9,880 A 29,640 A 59,280 A Continuous 30 min. 15 min. 2 min. 5 sec. N/A 30 min. 45 min. 60 min. 12 min. THERMAL SET POINTS* Normal: 22.2 to 26.7C Warning: 65.6 to 82.2C Shutdown: 104.4 to 120C *Temperature measured at output stab adapter plates. Part No. 12460 Rev. 0 15 TEST PROCEDURES FOR TESTING OF MOTOR OVERLOAD RELAYS Always refer to the manufacturers literature applicable to the particular overload relay before testing. The test operator should be familiar with the operating characteristics of the relay, the tolerances applicable to the operating characteristics and any means of adjusting the relay. The test usually performed on these devices is to verify the time delay characteristics of the relay when subjected to an overload. One test point is usually suggested to establish whether the relay is operating correctly and within the band of the time-current curve for the relay. The suggested test current is three times (3x) the normal current rating of thermal overload relays or three times (3x) the pick-up current (setting) of magnetic overload relays. It is, of course, easiest to make the connections and perform the tests on the relays if they are removed from the starter. However, it is not necessary to remove the relay as long as the power circuit is de-energized and the test leads can be connected to the device. The high current leads from the test set to the relay under test should be kept as short as possible and should be twisted to minimize losses caused by inductive reactance. Run the test and note the time required for the overload relay to trip. If the tripping time exceeds the desired value, or if the relay does not trip at all, the relay may not be protecting the motor properly. If the relay operates too quickly, it may result in unnecessary nuisance trips. It should be remembered that these devices operate over a wide band and precise results should not be sought. A tolerance of + 15% is usually acceptable for electromechanical devices. If a thermal overload relay is not operating properly, tripping too soon or too late, remove the heater element. Note its type, rating, etc., and compare with manufacturers data for operating characteristics of the motor. If correct for the application, substitute a new heater of the same rating and retest. If either under- or over-sized heater elements are being used, replace with the proper size heater and retest. If a magnetic overload relay is not operating properly, refer to the relay manufacturers literature for instructions on making adjustments of the time delay. If the relay is operating improperly, it also may be desirable to verify the pickup point (minimum operating point) of the relay. To perform this test, it is necessary to disengage the time delay feature of the overload relay. Refer to the manufacturers literature for detailed instructions. SETUP OF CONTROLS BEFORE TESTING: CONTROL POSITION Circuit Breaker OFF Part No. 12460 Rev. 0 16 OUTPUT SELECTOR Switch 1 (Disregard for units without this switch) VERNIER CONTROL Zero (counterclockwise) TIMER OPERATION SELECTOR Switch N.C. MOM. Ammeter MODE Switch MEMORY AMMETER RANGE Switch So that test current can be read in the proper range of the ammeter Ammeter PARALLEL/SERIES Switch To appropriate position depending on OUTPUT CONNECTION VOLTMETER CIRCUIT Selector Switch To desired position depending on voltage to be measured TESTING OF TIME DELAY: 1. Connect the test set to a suitable source of power. Be sure that the circuit breaker on the test set is off. 2. Make sure the motor circuit is de-energized. 3. Connect the output of the test set to the terminal of the heater of operating coil to be tested (see SELECTION OF OUTPUT CONNECTION). 4. Connect a set of light leads from the binding posts marked TIMER STOP to the control circuit contacts of the relay being tested. 5. Turn test sets circuit breaker ON. The INPUT ON light should glow. 6. Select proper ammeter range. 7. Set the desired test current by rotation of the VERNIER CONTROL, and then pressing the START button (for details see following note). NOTE: Depending on the position of the OUTPUT SELECTOR Switch (smaller units do not have this switch), the current may be increased by either clockwise or counter clockwise rotation of the VERNIER CONTROL (refer to chart of OUTPUT RANGES). For example, if the desired test current is 7500 amperes, the proper procedure would be to start with the OUTPUT SELECTOR Switch in position 1 and increase the VERNIER CONTROL from 0 toward 100. However, if the impedance of the device is such that you cannot get 7500 amperes at 100 on the VERNIER CONTROL, switch the OUTPUT SELECTOR Switch to position number 2. To increase the output current, rotate Part No. 12460 Rev. 0 17 the VERNIER CONTROL counterclockwise toward 0. If at full rotation of the VERNIER CONTROL, the desired current is not obtained, turn the OUTPUT SELECTOR Switch to the next higher position and repeat the procedure until the desired test current is reached. Since the TIMER OPERATION SELECTOR Switch is in the MOM. position, the output will only stay energized for 60 milliseconds. The memory ammeter will hold the reading of the amperage set (*). If at the last position the desired test current is not reached, connect the output of the test set in series (See SELECTION OF OUTPUT CONNECTION). Switch the Ammeter PARALLEL/SERIES Switch to the SERIES position, return the OUTPUT SELECTOR Switch to position 1 and repeat procedure. 8. Reset timer to zero by pressing RESET button. 9. Place ammeter MODE Switch in CONTINUOUS position. 10. Wait several minutes to allow the overload relay to cool or the plunger to settle in the dash pot. 11. Change TIMER OPERATION SELECTOR Switch to N.C. MAINT. position. 12. Initiate unit by pressing START button. The timer will stop and the output will automatically de-energize when the overload relay operates. NOTE: Check the ammeter reading during the test for accuracy. Minor adjustments may be made with the OUTPUT CONTROL while the test is in progress. 13. Record the results and compare them to the manufacturers specifications. (*)If the ammeter range switch is set in the 200 amp position, the memory ammeter will not hold the reading. It is recommended that the CONTINUOUS mode be used for currents below 200 amperes. Part No. 12460 Rev. 0 18 TEST PROCEDURE FOR TESTING OF MOLDED CASE AND LOW VOLTAGE POWER CIRCUIT BREAKERS Always refer to the manufacturers literature applicable to the particular circuit breaker before testing. The test operator should be familiar with the operating characteristics of the circuit breaker, the tolerances applicable to the operating characteristics and any means for adjusting the circuit breakers. Molded case breakers are usually tested for verification of the time delay characteristics and the minimum operating point (pick-up point) of the instantaneous element. Low voltage power breakers with solid state or electro-mechanical trip devices are usually tested for verification of the time delay characteristics of the long time delay and short time delay elements and for the minimum operating point (pick-up point) of the instantaneous element. Each breaker pole should be tested independently so that all trip devices are tested. One test point is usually sufficient to establish whether the long time delay or short time delay element is operating properly and within the band width of its time-current characteristics. For molded case breakers the suggested test current of the time delay element is three times (3x) the current rating of the breaker; for low voltage power circuit breakers, suggested test current is three times (3x) the pick-up setting of the long time delay element and one and one half times (1.5x) the short time delay setting where the type of trip characteristics is incorporated on the trip device. On both molded case and low voltage power breakers, the instantaneous element is tested to verify the minimum current necessary to cause the breaker to consistently trip instantaneously. When testing instantaneous trip elements, run the test to find the minimum current required to trip the breaker instantaneous