STS 300 Series - Technical Specifications; Monitoring System; Monitoring Circuit and Indicators; Cable and Clamp Specifications

P a g e | 8
Phone (609) 259-2626 | Fax (609) 259-0044 | Email info@specialtechnicalservices.com | specialtechnicalservices.com
Technical Specifications
Monitoring System
Power Supply
(marked on nameplate)
120VAC Model: 102-130VAC, 50/60Hz
240VAC Model: 204-240VAC, 50/60Hz
12VDC Model: 9-15VDC
24VDC Model: 18-30VDC
Power Rating
5 Watts
Temperature range
-40°F to 130°F (-40°C to 55°C)
Fused Protection
5 Amps
Enclosure Type
NEMA 7, 8, & 9
Weight
22 lbs. (10 kg)
Certification/Approvals
UL 913 & UL 1203 Standards
Class I, Division I, Group D
Class II, Division I, Groups E, F, G
Monitoring Circuit
Intrinsically Safe
Loop Resistance of Clamp to Grounding Point
≤ 5 Ohms (continuously monitored)
Output Relay Contact Rating
2 Voltage Free (dry) Form C contacts (DPDT)
Maximum contact rating:
10A, 277VAC
15A, 120VAC
15A, 30VDC
Integrity Lights
Status Indicator Lights:
Red: Non-permissive
Green: Permissive
Integrity Ground Cable
Type
Service Grade
Conductors
2 x 14 AWG Stranded Copper
Length
8ft
Operator Cable
Coil Cable
Type
Service Grade
Conductors
3 x 16 AWG Stranded Copper
Length
25 ft. or 50 ft.
Straight Cable
Type
Service Grade
Conductors
2 x 14 AWG Stranded Copper
Length
10ft. to 100 ft.
Grounding Clamp
Clamp Contacts
Stainless Steel
Clamp Body
Aluminum or Bronze