GE F60 UR Series, Инструкция по эксплуатации

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3-16 F60 Feeder Protection System GE Multilin
3.2 WIRING 3 HARDWARE
3
Refer to the Digital elements section of chapter 5 for an example of how form-A and solid-state relay contacts can be
applied for breaker trip circuit integrity monitoring.
Relay contacts must be considered unsafe to touch when the unit is energized! If the relay contacts need to
be used for low voltage accessible applications, it is the customer’s responsibility to ensure proper insula-
tion levels!
USE OF FORM-A AND SOLID-STATE RELAY OUTPUTS IN HIGH IMPEDANCE CIRCUITS
For form-A and solid-state relay output contacts internally equipped with a voltage measuring cIrcuit across the
contact, the circuit has an impedance that can cause a problem when used in conjunction with external high input
impedance monitoring equipment such as modern relay test set trigger circuits. These monitoring circuits may con-
tinue to read the form-A contact as being closed after it has closed and subsequently opened, when measured as
an impedance.
The solution to this problem is to use the voltage measuring trigger input of the relay test set, and connect the form-
A contact through a voltage-dropping resistor to a DC voltage source. If the 48 V DC output of the power supply is
used as a source, a 500
Ω
, 10 W resistor is appropriate. In this configuration, the voltage across either the form-A
contact or the resistor can be used to monitor the state of the output.
Wherever a tilde “~” symbol appears, substitute with the slot position of the module; wherever a number
sign "#" appears, substitute the contact number
When current monitoring is used to seal-in the form-A and solid-state relay contact outputs, the Flex-
Logic™ operand driving the contact output should be given a reset delay of 10 ms to prevent damage of
the output contact (in situations when the element initiating the contact output is bouncing, at values in the
region of the pickup value).
Table 3–2: DIGITAL INPUT/OUTPUT MODULE ASSIGNMENTS
~6A MODULE ~6B MODULE ~6C MODULE ~6D MODULE
TERMINAL
ASSIGNMENT
OUTPUT OR
INPUT
TERMINAL
ASSIGNMENT
OUTPUT OR
INPUT
TERMINAL
ASSIGNMENT
OUTPUT TERMINAL
ASSIGNMENT
OUTPUT
~1 Form-A ~1 Form-A ~1 Form-C ~ 1a, ~ 1c 2 Inputs
~2 Form-A ~2 Form-A ~2 Form-C ~ 2a, ~ 2c 2 Inputs
~3 Form-C ~3 Form-C ~3 Form-C ~ 3a, ~ 3c 2 Inputs
~4 Form-C ~4 Form-C ~4 Form-C ~ 4a, ~ 4c 2 Inputs
~5a, ~5c 2 Inputs ~5 Form-C ~5 Form-C ~ 5a, ~ 5c 2 Inputs
~6a, ~6c 2 Inputs ~6 Form-C ~6 Form-C ~ 6a, ~ 6c 2 Inputs
~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7 Form-C ~ 7a, ~ 7c 2 Inputs
~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8 Form-C ~ 8a, ~ 8c 2 Inputs
~6E MODULE ~6F MODULE ~6G MODULE ~6H MODULE
TERMINAL
ASSIGNMENT
OUTPUT OR
INPUT
TERMINAL
ASSIGNMENT
OUTPUT TERMINAL
ASSIGNMENT
OUTPUT OR
INPUT
TERMINAL
ASSIGNMENT
OUTPUT OR
INPUT
~ 1 Form-C ~ 1 Fast Form-C ~ 1 Form-A ~1 Form-A
~ 2 Form-C ~ 2 Fast Form-C ~ 2 Form-A ~2 Form-A
~ 3 Form-C ~ 3 Fast Form-C ~ 3 Form-A ~3 Form-A
~ 4 Form-C ~ 4 Fast Form-C ~ 4 Form-A ~4 Form-A
~ 5a, ~ 5c 2 Inputs ~ 5 Fast Form-C ~ 5a, ~ 5c 2 Inputs ~5 Form-A
~ 6a, ~ 6c 2 Inputs ~ 6 Fast Form-C ~ 6a, ~ 6c 2 Inputs ~6 Form-A
~ 7a, ~ 7c 2 Inputs ~ 7 Fast Form-C ~ 7a, ~ 7c 2 Inputs ~ 7a, ~ 7c 2 Inputs
~ 8a, ~ 8c 2 Inputs ~ 8 Fast Form-C ~ 8a, ~ 8c 2 Inputs ~ 8a, ~ 8c 2 Inputs
WARNING
NOTE
NOTE
NOTE