Power Line Carrier ____________________________________________________________________
RF-MCGARDPRO
Hubbell Power Systems, Inc.
–
RFL™
Products
July 1, 2022
©2022 Hubbell Incorporated
5-23
Transmitter Alarm:
6.
Reflected Power Alarm Threshold:
Sets the threshold above which the RPM alarm is
generated. The range is from 0% to 50% in 1% increments.
Receiver:
7.
RX Block Frequency:
Sets the RX block frequency from 30kHz to 500kHz in 0.125kHz
increments.
8.
RX Bandwidth:
There are three settings available in On/Off mode: 500, 1000 or
1500Hz.
9.
Block Hold Timer:
This setting delays the dropout of the block output after the blocking
signal is lost. This delay can be set in the range of 0 to 50ms in increments of 1ms. The
recommended default setting is 10ms. The timer increases the reliability of the blocking
receiver by preventing an intermittent loss of carrier. This loss can be caused by arc gap
flashover which would allow the protective relay to over-trip for an external fault
condition.
Start/Stop Logic:
10.
Start Logic:
Sets the polarity for the “Stop 1” and “Stop 2” input contacts. Can be set
to Normal or Inverted. When set to Normal, the contact is active when the station battery
voltage is present and is inactive when the station battery voltage is not present. When
set to Inverted, the contact is inactive when the station battery voltage is present and is
active when the station battery voltage is not present.
11.
Start Logic – Start 1 or Start 2:
Selects whether the “Start 1” and “Start 2” contacts
are ANDed or ORed. The options are “And” or “Or.”
12.
Stop Logic:
Sets the polarity for the “Start 1” and “Start 2” input contacts. Can be set
to Normal or Inverted. When set to Normal, the contact is active when the station battery
voltage is present and is inactive when the station battery voltage is not present. When
set to Inverted, the contact is inactive when the station battery voltage is present and is
active when the station battery voltage is not present.
13.
Stop Logic – Stop 1 or Stop 2:
Selects whether the “Stop 1” and “Stop 2” contacts are
ANDed or ORed. The options are “And” or “Or.”
