Schneider Electric AGS User Manual

Installation
2–6 975-0307-01-01 Rev G
ELV Circuits ELV (Extra-Low Voltage) circuits have an open-circuit voltage of not more
than 30 V
rms
or 42.2 VDC or peak, and are therefore not a shock hazard.
Class 2 Circuits As per the US National Electrical Code (NEC) and the Canadian
Electrical Code (CEC), available power in Class 2 circuits is limited to
100 VA, usually by current limiting by means of overcurrent protection or
series resistance. The current is limited to 5 A for circuits with open-
circuit voltage of 20 V, and to I=100/V
oc
for circuits with open circuit
voltage between 20 V and 30 V.
Circuit
Limitations
The relay contacts in the Conext AGS are rated at 5 A maximum and all
circuits on the 20-contact connector are rated at 30 V maximum.
Ensure that all circuits connected to the 20-contact connector comply
with the following limits:
WARNING
FIRE, SHOCK AND ENERGY HAZARDS
The 20-contact connector is intended for connection to Class 2 ELV
(Extra Low Voltage) circuits only. Do not exceed the circuit limitations
specified in the following section.
Failure to follow these instructions can result in death or serious
injury.
Tab le 2- 2 Circuit Limitations
Circuit Parameter Circuit Maximum
Open circuit voltage (Voc) 30 V maximum
Overcurrent protection
(fuse size for open circuit voltage up to 20 V)
5 A maximum
Overcurrent protection
(fuse size for open circuit voltage from 20 V to
30 V)
5 A to 3.33 A
(100/V
oc
amps
maximum)
975-0307-01-01_RevG(AGS-Owners).book Page 6 Thursday, August 27, 2015 2:01 PM