ZIV 7IRD-A, Instruction Manual

Page: 11 / 180

Chapter 1. Description
1-5
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
1.4 Additional Functions

Trip and Close Circuit Supervision
The equipment incorporates elements to monitor the breaker’s trip and close coil circuits. Both
circuits are monitored in either of the breaker’s two possible status, tripped and closed. This
supervision unit produces two digital outputs:
Trip Coil Circuit Failure and Close Coil Circuit
Failure .

Operation Outputs Monitoring
Associated to Trip and Close Circuit Monitoring functions, the operation output functions can be
found.

Breaker Monitoring
Fault interruption kA
2
values are summed and accumulated in the terminal unit each time the
breaker trips. The accumulated kA 2 information is compared with an alarm set point intended for
predicting breaker maintenance.

Excessive Number of Trips
This function ensures that the breaker will not be subjected to an undesirable number of
operations during a fixed period of time.

LED Targets
Terminal unit front panel indication consists of fourteen LEDs. Twelve of them are user
definable. The two remaining LEDs are always assigned to indicate the Protection terminal and
the Control terminal are
Ready . From the twelve user definable LEDs, four of them are referred
to protection and eight of them to control.

Metering Module (optional)
Optionally, the equipment can be provided with a metering board that has three current and
three voltage analog inputs. These inputs allow the accurate metering of current, voltage, power
and energy. The module includes also input and output transducers.

Protection and Control Status Contact Inputs
The protection and control subsystems have a number of inputs depending to the model of
7IRD . The equipment’s configuration will define their respective functions.

Protection and Control Auxiliary Outputs
The protection and control subsystems have a number of outputs depending to the model of
7IRD . The equipment’s configuration will define their respective functions.