Crown Electronic Systems

LED TEST PANEL

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High Voltage Breakdown Tester

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SPECIFICATION ;

                                  TEST CURRENT (AC)                        TEST CURRENT

                                       0 - 5KV                                                      30mA
                                       0 - 5KV                                                      100mA
                                       0 - 10KV                                                     30mA
                                       0 - 20KV                                                     30mA


METER                                :        Two Digital Meters to monitor Voltage & Amp Leakage Current        
ACCURACY                         :        + 1% of Reading

POWER REQUIREMENT      :       230V AC 

OPTIONAL :

TIMER                                   :      3 Digit , settable form 0 - 999 Sec

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Digital Milli Ohm Meter

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“CROWN” made DIGITAL MILLI OHM METER is useful for accurate measurement of low resistance of copper wire conductors , cables, coil , heater element , contact resistance of switch relays etc. Four terminal measurement system ensures error free reading without effect of test lead resistance.

SPECIFICATION :

RANGE                                      :        0.1 mill ohm to 199.9K Ohm in 7 Range

            RANGE                                              TEST CURRENT

            0 - 199.9 m Ohm                                           1A
            0 - 1.999     Ohm                                           100 mA
            0 - 19.99     Ohm                                           10 mA
            0 - 199.9     Ohm                                           1 mA
            0 - 1.999 K Ohm                                            100 mA
            0 - 19.99 K Ohm                                            10 mA
            0 - 199.9 K Ohm                                            1 mA


ACCURACY                                      :           ±0.2% ± 2 Digit

RESOLUTION                                   :           1 In 1999 Count

DISPLAY                                           :           3 ½ Digit 12.5 mm Height LED

POWER                                             :           230V AC ± 10%

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Digital Micro Ohm Meter

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“CROWN” made DIGITAL MICRO OHM METER is a compact high reliability 3 ½ digit instrument suitable for measurement of resistivity of copper wires from 70 SWG to 50 SWG resistance of cables , windings , coils , heater elements & contact resistance of switches , relays etc. Emphasis in the design of this instrument has been to provide quick , stable & repeatable readings of resistance . The instrument uses 4 terminal measurement so that resistance of test leads & contacts in eliminated from test results . Actual value of resistor is directly displayed on seven segment 12.5mm display.

 SPECIFICATION :-

RANGE OF MEASUREMENT       :           1 micro ohm to 19.99 K Ohm in eight ranges

     RANGE                                  NOMINAL TEST CURRENT                         ACCURACY

0 - 1999 µ Ohm                                    1.50A                                                   ± 0.3% + 2 Digits
0 - 19.99 m Ohm                                  0.75A                                                   ± 0.2% + 2 Digits
0 - 199.9 m Ohm                                  0.75A                                                   ± 0.2% + 2 Digits
0 - 1.999 Ohm                                      75mA                                                   ± 0.2% + 2 Digits
0 - 19.99 Ohm                                      7.5mA                                                  ± 0.2% + 2 Digits
0 - 199.9 Ohm                                      0.75mA                                                ± 0.2% + 2 Digits
0 - 1999 Ohm                                       0.07mA                                                ± 0.2% + 2 Digits
0 - 19.99 K Ohm                                  0.075mA                                              ± 0.2% + 2 Digits

WARM UP Time for rated accuracy = 3 min.

INPUT VOLTAGE                            :           230V AC  ± 10% 10W Approx.

OVER RANGE                                 :           Three most significant digit blank & ‘1’ appears

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Multi Output DC Regulated Power Supply

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SPECIFICATION :

INPUT VOLTAGE              :    230V + 10% AC 50Hz

OUTPUT VOLTAGE /       :    (A) 0-30V DC  / 2A
CURRENT                                   (B) 0- +15V DC / 1A
                                                          (C) 0-5V DC /5A

LOAD REGULATION      :    + 0.05% From on load to full load

LINE REGULATION            + 0.01% for + 10% variation input voltage

OPERATING MODE        :     Independent & Tracking mode


RIPPLE                                 :     Less than 1mV


METER                                    (1) Two Digital meters to monitor the output voltage & current 
                                                        output A
                                                        (2) One Digital meter to monitor the output voltage of output B, 
                                                        selectable by switch 
                                                         (3) One digital meter to monitor the voltage of output C


PROTECTION                :       Against short circuit & overload


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