Scully ST-47 Series - Technical Specifications and Approvals; Input Power and Control Contact Ratings; Operating Temperature and FM Approvals

Self-Proving Vehicle Grounding Verication System
Technical Specications and Approvals
Page 9.
2.1 Input Power
120 VAC +/- 15% or 208-240 VAC 50/60Hz
.25 Amps Maximum .125 Amps Maximum
2.2 Control Contact
Independently fused, 240 VAC
5 Amps resistive
2.3 Operating Temperature
-40 to +158 deg. F
(-40 to +70 deg. C)
2.4 FM Approval & FM Approval for Canada
This system’s outputs have been FM Approved as Intrinsically Safe for
Connection to Class I, Division 1, Groups C and D Hazardous Locations.
The Ground Ball or Ground Bolt may be mounted in a Class I, Division 1, Group C or D
Hazardous Location.
The ST-47-115 EL(K) and ST-47-240 EL(K) may be mounted in a Class I, Division 1, Group C or D
Hazardous Location.