Baldor 15P Series Installation And Operating Manual

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MN715P Receiving and Installation 3-4Line ImpedanceThe Baldor Series 15J control requires a minimum line impedance of 1%. Theinput impedance of the power lines can be determined as follows:Measure the line to line voltage at no load and at full rated load. Usethese measured values to calculate impedance as follows:%Impedance (Volts NoLoad Volts FullLoad )(Volts NoLoad ) 100Table 3-3 Recommended Line Reactors230VAC, 60Hz, 3% Impendance 460VAC, 60Hz, 3% ImpendanceCatalog No. HP Amps Inductance(mH)Catalog No. HP Amps Inductacne(mH)LRAC00401 1 4 3 LRAC00202 1 2 12LRAC00801 1.5 8 1.15 LRAC00202 1.5 2 12LRAC00801 2 8 1.15 LRAC00402 2 4 6.5LRAC01201 3 12 1.25 LRAC00402 3 4 6.5LRAC01801 5 18 0.8 LRAC00802 5 8 3.0LRAC3501 7.5 25 0.5 LRAC01202 7.5 12 2.5LRAC01802 10 18 1.5Line Reactors3 phase line reactors are available from Baldor. The size of the line reactor touse is based on the maximum continuous load. If providing your own linereactor, use the following formula to calculate the minimum inductancerequired. Table 3-2 lists the input current required for this calculation. Linereactors may be used at the control output to the motor. When used this way,they are called Load Reactors.L (V LL 0.01)(I 3 377)Where: L Minimum inductance in henrys.VL-L Input volts measured line to line.0.01 Desired percentage of input impedance (1% shown).I Input current rating of control.377 Constant used with 60Hz power.Use 314 with 50Hz power.