Page 1: ...MCCB 500 MOLDED CASE CIRCUIT BREAKER TESTER USER S MANUAL TEL 909 923 9390 FAX 909 923 9391 November 2020 Revision 1 1...
Page 2: ...provider Unauthorized modifications can cause safety hazards and will void the manufacturer s warranty EQUIPMENT RATINGS IP Rating The enclosure for the MCCB 500 an IP rating of 21 Pollution Degree Th...
Page 3: ...urrent Output Control 7 2 3 Timer Stop Input and Control 8 2 4 MCCB 500 Timer 9 2 5 LCD Contrast Control 9 2 6 50 60 Hz Cycle Time Selection 10 3 0 OPERATING PROCEDURES 11 3 1 Testing the Time Delay o...
Page 4: ...N THIS DOCUMENT This document uses the following conventions A key switch input or knob on the MCCB 500 is indicated as KEY SWITCH INPUT KNOB Warning messages are indicated as WARNING Warning message...
Page 5: ...short duration overload conditions This feature is convenient for performing instantaneous trip tests of molded case circuit breakers or testing the time delay characteristics of magnetic overload re...
Page 6: ...lows the microprocessor to monitor the transformer current source operating temperature 1 2 Furnished Accessories The MCCB 500 comes furnished with the following Two 5 foot 1 5m 2 0 current cables Two...
Page 7: ...racy 0 1 of reading 0 1ms OUTPUT CURRENTS 500A 4V 125A 14V 25A 70V DISPLAY back lit LCD screen 128 x 64 pixels viewable in bright sunlight and low light levels HUMIDITY 90 RH 40 C 104 F non condensing...
Page 8: ...se of the controls and indicators may seem obvious but users should become familiar with them before using the MCCB 500 Accidental misuse of the controls will usually cause no serious harm Users shoul...
Page 9: ...current is measured and displayed on the LCD screen The MCCB 500 s output current ratings are shown in Table 2 and Table 3 below Table 2 MCCB 500 Current Output CURRENT OUTPUT 500A 4V 125A 14V 25A 70V...
Page 10: ...indicator next to the MOMT label will turn on indicating that the MCCB 500 current source is on The output current will also be displayed on the LCD screen and the last current reading remains displa...
Page 11: ...dry contact state will stop the timer and turn off the current source In WET CONTACT mode the MCCB 500 will sense an AC or DC voltage applied to the TIMER STOP terminals The OFF state is a voltage fro...
Page 12: ...pleted A typical test results screen is shown in Figure 2 The timer is turned on when the ON START mode is selected Figure 2 Typical MCCB 500 Test Results Screen 2 5 LCD Contrast Control To adjust the...
Page 13: ...Time Selection To toggle between the 50 and 60Hz cycle times press and hold both the and keys to the left of the LCD screen The message 50 Hz Set or 60 Hz Set will be displayed on the LCD screen This...
Page 14: ...ase circuit breaker to test its Open Time Delay The MCCB 500 injects a test current through a circuit breaker contact This current is sensed by the circuit breaker control circuit The time delay test...
Page 15: ...current h Release the key i Press the key to select the ON START mode and start the test The MCCB 500 will inject the preset current into the bus and turn on the timer The timer will stop and the cur...
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Page 17: ...Copyright 2015 by Vanguard Instruments Company Inc MCCB 500 User s Manual Revision 1 1 November 10 2020 TA...
