Installation and Commissioning
GARD 8000 SYS RFL Electronics
November 28, 2017 4-62 973.334.3100
4.6.4.12 CURRENT DIFF RELAY TEST MODE
Another option for commissioning testing is the Test Mode. The test mode is a relay
function that blocks local tripping allowing commissioning and other diagnostic tests to be
run without actually tripping breakers.
CAUTION
THE TEST MODE DISABLES BREAKER TRIPPING; IT SHOULD BE USED
WITH EXTREME CAUTION.
RFL recommends that the relay trip outputs be manually bypassed during testing when
possible. While in test mode virtually all of the relay functions continue to operate as
normal—currents are measured, messages are passed between relays, trips are calculated,
and SOE and oscillography data is recorded. The trips are blocked from being sent to the
breakers by the logic in the GARD controller.
The Test Mode allows all of the functions of the relay to be simulated and tested.
When the relay is in test mode a minor alarm will be issued.
To access the Test Mode, from Home page click on “Test,” select “System Test” and then click on
“Current Diff Relay.” At the Current Diff Relay Test page check the box “Enter Test Mode” and then
click on “Run Test” (See below).
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