Analogue Instruments - 50 / 86 Pages

48
360° Rotary Synchroscope
Product Codes – Pivot and Jewel
Rating, self-contained: 120V AC
Frequency rating: 50 or 60Hz (specify), 400Hz optional
Normal operating position: On vertical panel unless otherwise specified at time
of order
Position influence: Not more than 3.6 mechanical degrees deviation for
up to 60° tilt from normal operating position.
Accuracy: 2 degrees
Overshoot: 33% maximum
Response time: 3 seconds maximum for 180° deflection
Sensitivity at synchronism: 3 electrical degrees maximum
External field influence: 3% maximum in 5 oersted field
Pull in frequency: 58Hz
Drop-out frequency: 57Hz
Dielectric test: Live parts to case, including panel: 2600V RMS
for 1 minute.
Between running and 1500V RMS for 1 minute
incoming circuits:
Overload capacity: 50% indefinitely
Characteristics Incoming circuit Running circuit
Impedance ohms: 4670 5335
Resistance ohms: 4020 5240
Resistance ohms: 2380 1058
Reactive volt amps: 1.57 0.535
Volt-amps: 3.08 2.7
Power factor: 0.86 0.98
Watts: 2.66 2.65
360° Rotary Synchroscope
For connection diagrams, see Fig. 10 on page 59.
4 12" square flange 8 34" square flange
Rating Scaling* Standard case Sealed case hi-shock Standard case
catalogue no. catalogue no. catalogue no.
120V 50Hz SLOW FAST •/+077-145A-PRAE-C5 078-145J-PRAE-C5 •079-145A-PRAE-C5
120V 60Hz SLOW FAST •/+077-146A-PRAE-C6 078-146J-PRAE-C6 •079-146A-PRAE-C6
120V 400Hz SLOW FAST 077-144A-PRAE-C4 078-144J-PRAE-C4 •079-144A-PRAE-C4
Specifications
Alternate voltage of 240V, use code RR • UL approved file no. E87815
instead of PR. + CSA approved file no. LR52592

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