ABB CPS3200U, Product Manual

Page: 35 / 64

Page 35
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Step Action
1. Is accessibility to the circuit throughout the network consistent with A3 requirements?
2 Is the 5 - pin protector marked as a special circuit?
3.
Does the 5 - pin protector protect each pair to a level corresponding to a CommScope 3C*EW Gas tube primary pro-
tector? This protector has a voltage breakdown range of 265 - 465 Volts and an impulse spark over range of <265 -
700 Volts. Protectors with a lower voltage breakdown rating will be problematic.
7. Inspect the Network - Check and Mark Wiring Compliance
The CP/ - 190V system is classified as an A3 circuit tested according to GR - 1089 - CORE Issue
6. As such, each location in the network where the output is available to be touched must be
protected and marked as an A3 voltage.
Voltage Class General public Employees Craftsperson's
A 1 Restricted access Exposed Exposed
A 3 Inaccessible Inaccessible
Restricted access
( Exceptions )
Table 7 - 1 accessibility to continuous class –A voltage