Testing; Test Mode; Force Contact Inputs - GE T35 Instruction Manual

5 SETTINGS

5.9TESTING

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PATH: SETTINGS TESTING
## SETTINGS
## TESTING
MESSAGE
The relay provides test settings to verify that functionality using simulated conditions for contact inputs and outputs. The
Test Mode is indicated on the relay faceplate by a flashing Test Mode LED indicator.
To initiate the Test mode, the
set to Logic 1. In particular:
• To initiate Test Mode through relay settings, set
setting is changed from "Disabled" to "Enabled".
FUNCTION
• To initiate Test Mode through a user-programmable condition, such as FlexLogic™ operand (pushbutton, digital input,
communication-based input, or a combination of these), set
to the desired operand. The Test Mode starts when the selected operand assumes a Logic 1 state.
TIATE
When in Test Mode, the T35 remains fully operational, allowing for various testing procedures. In particular, the protection
and control elements, FlexLogic™, and communication-based inputs and outputs function normally.
The only difference between the normal operation and the Test Mode is the behavior of the input and output contacts. The
former can be forced to report as open or closed or remain fully operational; the latter can be forced to open, close, freeze,
or remain fully operational. The response of the digital input and output contacts to the Test Mode is programmed individu-
ally for each input and output using the Force Contact Inputs and Force Contact Outputs test functions described in the fol-
lowing sections.
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PATH: SETTINGS TESTING
# FORCE CONTACT
# INPUTS
MESSAGE
MESSAGE
The relay digital inputs (contact inputs) could be pre-programmed to respond to the Test Mode in the following ways:
• If set to "Disabled", the input remains fully operational. It is controlled by the voltage across its input terminals and can
be turned on and off by external circuitry. This value should be selected if a given input must be operational during the
test. This includes, for example, an input initiating the test, or being a part of a user pre-programmed test sequence.
• If set to "Open", the input is forced to report as opened (Logic 0) for the entire duration of the Test Mode regardless of
the voltage across the input terminals.
• If set to "Closed", the input is forced to report as closed (Logic 1) for the entire duration of the Test Mode regardless of
the voltage across the input terminals.
The Force Contact Inputs feature provides a method of performing checks on the function of all contact inputs. Once
enabled, the relay is placed into Test Mode, allowing this feature to override the normal function of contact inputs. The Test
Mode LED will be On, indicating that the relay is in Test Mode. The state of each contact input may be programmed as "Dis-
abled", "Open", or "Closed". All contact input operations return to normal when all settings for this feature are disabled.
GE Multilin

TEST MODE

TEST MODE
FUNCTION: Disabled
TEST MODE INITIATE:
On
setting must be "Enabled" and the
TEST MODE FUNCTION
TEST MODE INITIATE

FORCE CONTACT INPUTS

FORCE Cont Ip 1
:Disabled
FORCE Cont Ip 2
:Disabled
↓
FORCE Cont Ip xx
:Disabled
T35 Transformer Management Relay
Range: Disabled, Enabled
Range: FlexLogic™ operand
TEST MODE INITIATE
to "On". The Test Mode starts when the
to "Enabled" and set
TEST MODE FUNCTION
5.9.2 FORCE CONTACT INPUTS
Range: Disabled, Open, Closed
Range: Disabled, Open, Closed
Range: Disabled, Open, Closed
5.9 TESTING
5.9.1 TEST MODE
setting must be
TEST MODE
TEST MODE INI-
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