Specifications

December 2008 Page 14–11
Chapter 14. Protective Relay Interface (PRI/PRS) Module
14
(FCS). The default configuration settings are the
same for all four of the module’s functions, or
circuits. They are as follows:
Contact Bounce = 0ms
Trip Hold Time = 0ms
Security Delay = 8ms
UnBlocking = Off
GBT = WO/Over
For instructions on configuring the PRI module,
please refer to the FCS online help facility
(Configuring the FOCUS Channel Modules >
Protective Relay Interface Module (PRI/PRS)…).
Figure 14–10. Protective Relay Interface
(PRI/PRS) Module Status Indicators.
14.5 Acceptance Test
We recommend that you initially install and test
Protective Relay Interface Modules in “test”
chassis (i.e., chassis that are not part of an
operating network). This way, you can quickly
perform the acceptance tests without interfering
with a live network.
To conduct these tests, you will need the
following:
•Two Protective Relay Interface Modules
and rear interfaces
•Two FOCUS chassis
• One assigned time slot on the FOCUS T1
line for both modules
•Avoltage supply source having an output
range of 48 to 250Vdc with a control
switch to turn the voltage on and off (this
applies the key-in needed to trip the circuits
on the modules)
•Atimer to measure the transfer time
•Up to 14 AWG stranded wire for connec-
tions
To test the functionality of the Protective Relay
Interface Modules, complete the following steps:
(For complete instructions on specific FCS proce-
dures, please refer to the FCS online help facility.)
1. Install the PRI Modules and rear inter-
faces.
If the two modules and interfaces have not
been installed, do so now following the
instructions in the “Installation” section
earlier in this chapter. Designate one chassis
as the local terminal and the other as the
remote terminal.
When you first install the PRI Module in a
live, unlocked chassis, the red/green status
LED is red. If the module is functional, the
status LED turns green within 20 seconds. If
the module is non-functional, the status LED
stays red, even after 20 seconds have elapsed.
This is the first acceptance test.
All LEDs other than the status LED will be off
at this point if the two modules have the same
assigned DS0 time slot. If any LEDs or alarms
are on, correct the DS0 channel assignments
before continuing.
NOTE