Instruction Manual Model 302 Phase and Motor Rotation Meter
INDEX PAGE SAFETY RULES .................................................... 01 SAFETY CHECKS ................................................. 02 DON'T TOUCH ...................................................... 02 GENERAL DESCRIPTION .................................... 03 BRIEF PRODUCT DESCRIPTION ........................ 04 OPERATING INSTRUCTIONS .............................. 04-05 FRONT PANEL LAYOUT ....................................... 06 PRINCIPLE OF HOW IT WORK ............................
SAFETY RULES RISK OF ELECTRIC SHOCK CAUTION This tester has been designed with your safety in mind. However, no design can completely protect against incorrect use. Electrical circuits can be dangerous and/or lethal when lack of caution or poor safety practices are used. Do not carry out field measurements on either the power system grounding, during periods of forecast lightning activity, in areas that encompass the station being measured or of the power network connected to the station being measured.
SAFETY CHECK Before using the tester check the condition of the batteries. This is done by switching the tester ON. If the BAT OK led does not light up, the battery need replacing. Battery and fuse replacement are described later in this user's manual.. When changing the battery, fuses, or removing the cover to access the internal circuitry, always disconnect the test leads. When replacing the fuse use only the type specified, 5 x 20mm, 200mA, 250V fuse, and insert correctly into the fuse holder.
GENERAL DESCRIPTION This Test Instrument is a 3 Phases Presence and Rotation Indicator combined with a 3 Phases Motor Rotation Tester. It can be utilized on a 3 Phase Powered System (the supply side) or on a Three Phases Unpowered Motor (the load side) without having to worry about damage to the tester. When utilized on a 3 Phase Powered System, the instrument is then utilized as a 3 Phases Presence and Rotation Indicator.
BRIEF PRODUCT DESCRIPTION This 3 Phases and Motor Rotation Tester has 3 test leads which connects to the 4 mm female sockets on the tester, on the one side. These Test leads are color coded: L1 = Red which connects to L1 on the tester. L2 = White(or yellow) which connects to L2 on the tester. L3 = Blue(or black) which connects to L3 on the tester. On the other side of the test leads are the probes, also color coded.
Press the TEST button to turn the instrument "ON". The green LED indicates that the instrument is ON and is busy testing. The battery is OK when the green LED is ON. Should the Green LED not come on while depressing the TEST button, replace the battery (see Battery Replacement). If the LED (Right arrow) L1-L2-L3 is illuminated, clockwise rotary field is present. If the LED(Left arrow) L2-L1-L3 is illuminated, a counter clockwise rotary field is present.
FRONT PANEL LAYOUT L1 L2 L3 RU SV TW / / / TEST 302 L1 L2 L3 BAT OK CAT.III 600V L2 L1 L3 PHASE PRESENCE INDICATOR Connect L1, L2 and L3 to their respective Phase. Their corresponding Lamp will light up when power (>120Vac) is present. PHASE ROTATION TESTER Depress the TEST button, The Led L1L2L3 will indicate clockwise phase rotation. If anti-clockwise phase rotation is present, the Led L2L1L3 will light up. MOTOR ROTATION TESTER Connect L1 from tester to U of motor.
PRINCIPLE OF HOW IT WORK The tester has two separate circuits: The first circuit is the 3 Phase presence indicator, which is shown by the neon lamps and the second circuit is the three phase sequence indicator by LEDs. A low battery, with a Power On indicator circuitry is also present. 3 Phase Presence Indication circuit: This circuit uses neon lamps to indicate if a phase is present. These neon lamps are connected in series with a limiting resistor.
PREPARATION FOR USE Fuses: In doubt, check the fuses using a ohm meter. Please note that this instrument will not indicate anything, should the fuses be blown. Test Leads: Check the test leads for defects or cracks. Replace if cracked or damaged. Only replace with the same type Cleaning: Clean the instrument case with an anti-static cleaner and wipe with dry cloth. REPLACING THE BATTERIES Prior to battery replacement always disconnect the instrument from the circuit to which it's connected.
SPECIFICATIONS ELECTRICAL Determination of the Phase Presence Nominal Voltage for Phase Presence Indication (the voltage required for the neon lamps L1, L2, L3 to lit up) ... From 100Vac to 600Vac. Frequency Range ................................... From 10Hz to 400Hz. Determination of the Phases Rotary Field Direction: Direction (the voltage required to have the direction LEDs L1-L2-L3 or L2-L1-L3 to indicates) ......................... From 1 to 600Vac. Frequency Range ...................................
LIMITED ONE-YEAR WARRANTY B&K Precision warrants to the original purchaser that its products and the component parts thereof, will be free from defects in workmanship and materials for a period of one year from date of purchase from an authorized B&K Precision distributor. B&K Precision will, without charge, repair or replace, at its option, defective product or component parts. Returned product must be accompanied by proof of the purchase date in the form of a sales receipt.
SERVICE INFORMATION Warranty Service: Please return the product in the original packaging with proof of purchase to the address below. Clearly state in writing the performance problem and return any leads, probes, connectors and accessories that you are using with the device. Non-Warranty Service: Return the product in the original packaging to the address below. Clearly state in writing the performance problem and return any leads, probes, connectors and accessories that you are using with the device.
B&K Precision 22820 Savi Ranch Parkway Yorba Linda, CA 92887 U.S.A. www.bkprecision.com Printed in Taiwan / Ver. 1.
