GE GEH-5304A - Manual (Page 16)

GEH-5304A
16
Thermostats automatically reset after the motor has cooled somewhat. In order
to prevent property damage or injury to personnel, the control circuit should be
designed to prevent re-energizing of the motor when the thermostat resets.
Table 5
Maximum Current Ratings for Thermostats
on Dripproof and Totally Enclosed Motors
(Normally open or normally closed contacts)
Load 125 VAC 250 VAC 600 VAC 30 VDC
Do not use above 600 VAC or 30 VDC
Resistive 5 Amps 2.5 Amps 1 Amp 5 Amps
Inductive* 3 Amps 1.5 Amps 0.5 Amps 1.5 Amps
*Suitable for pilot duty only (relay coils).
H. Speed Limit Device
The mechanical speed limit device is non-adjustable. Tripping speed is specified by a note on the print cer-
tification for each specific order.
The speed limit electrical contacts are normally closed and are usually connected in relay or holding circuits.
Current ratings are the same as those listed in Table 5.
A speed limit device is furnished on machines only when ordered.
The contacts of the speed limit device automatically reclose after the speed has
fallen below the trip value. In order to prevent property damage or injury to
personnel, the control circuit should be designed to prevent re-energizing the
motor until the cause of the overspeed has been corrected.
Table 6
Lead Markers
Function Winding
Armature A1, A2
Field (Shunt) F1, F2, F3, F4, etc.
Stator, AC Machines Only T1, T2, T3, T4, etc.
(Type AN Tachometer Generator)
Accessories & Special Device Markings
Tachometer Generator, Direct Current, to Terminal Board A1, A2
Brake Coil Leads B1, B2, B3, B4, etc.
Heater, Brake Space Heater BH1, BH2, BH3, BH4, etc.
Brake Interlock Switch BS1, BS2, BS3, BS4, etc.
Heater, Space Heater in the Machine H1, H2, H3, H4, etc.
Thermostat P1, P2, P3, P4, etc.
Resistance Temperature Detector (RTD) R1, R2, R3, R4, etc.
I. Space Heater
When furnished, see Print Certification for Electrical Rating.
Space heaters are furnished in machines when ordered. They should be energized with the correct AC volt-
age as shown on the nameplate.