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コントローラー Cutler-Hammer EATON Ampgard Mark VのPDF 取扱説明書をオンラインで閲覧またはダウンロードできます。Cutler-Hammer EATON Ampgard Mark V 12 ページ。 Solid-state, brush-type, synchronous motor controllers

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I.B. 48008

AUTOTRANSFORMER STARTER OPERATION

The field power thyristors will be held OFF until the 115

VAC inhibit signal and the proper slip frequency have

appeared. The 2.5 to 3.5 second synchronizing period

also will not start until both these conditions are met.

When the controller is used in conjunction with a

reduced-voltage motor controller, the gating is inhibited

until full voltage is applied to the motor. This is done by

not applying 115 volts to terminal 115 and IN- on the

circuit board, until motor is at full voltage.

The field excitation must not be applied until an

autotransformer starter has been sequenced to full

voltage. If the field is applied before the starter has

transitioned to full voltage, a high current will result from

the voltage unbalance condition, and may cause physical

damage.

START-UP PROCEDURE FOR AMPGARD LINE-UP

Prior to start-up, verify a proper line-up installation, one

that is undamaged, free of skids, eyebolts, lifting angles,

debris, and all foreign material, one that is level and

securely mounted and properly wired. Confirm each

starter compatability with motor voltage, HP, and FLA.

Check the torque tightness of all connections. Study all

applicable instruction material and diagrams. Have

available the schematic and connection diagrams fur-

nished with the following equipment:

1. Dielectric (Hi-pot) tester capable of delivering 40

milliamps at 16 kVAC or 23 kVDC.

2. Multimeter to measure ohms and DC volts.

3. Meg-ohm meter (Megger) capable of producing 2500

volts.

Safety Check

Verify that the primary (medium-voltage) sources of power

to the Ampgard bus system are disconnected and locked

out.

Fuse and Contactor Check

1. Remove power circuit fuses and contactor from each

enclosure.

2. Remove control transformer primary fuses from each

contactor.

3. Use ohmmeter to verify continuity of fuses.

4. Check contactor and Hi-pot 16 kVAC or 23 kVDC

across each bottle for 1 minute. 5ma leakage is

failure.

Effective 11/97

Fig. 7 Thermal Capacity of a Typical Synchronous Motor

Start Winding

Bus System Check

With the contactors and power circuit fuses removed,

prepare the line-up for a megger test:

1. Close each isolating switch.

2. Disconnect metering taps, capacitors, arrestors and

any other equipment connected to the bus bar sys-

tem.

3. Then measure and record the megohm resistance

between phases of the bus bar system and between

each phase and ground. Track down and correct any

source of a low reading.

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