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REF 610
4.1.1.3.
4.1.1.4.
4.1.1.5.
4.1.1.6.
4.1.1.7.
14
Feeder Protection Relay
Technical Reference Manual
Outputs
REF 610 is provided with three power outputs (PO1, PO2 and PO3), two signal
outputs (SO1 and SO2) and three optional signal outputs (SO3, SO4 and SO5).
Switchgroups SGR1...8 are used for routing internal signals from the protection
stages, the external trip signal and signals from the auto-reclose function to the
desired signal or power output. The minimum pulse length can be configured to be
40 or 80 ms and the power outputs can all be configured to be latched.
Disturbance recorder
REF 610 includes an internal disturbance recorder which records the momentary
measured values, or the RMS curves of the measured signals, and up to eight
user-selectable digital signals: the digital input signals and the internal signals from
the protection stages. Any digital signal can be set to trigger the recorder on either
the falling or rising edge.
HMI
The HMI of REF 610 is equipped with six push-buttons, an alphanumeric
2x16 characters' LCD, eight programmable indicator LEDs, three indicator LEDs
with fixed functionality, and an indicator LED for front communication. The
push-buttons are used for navigating in the menu structure and for adjusting setting
values.
An HMI password can be set to protect all user-changeable values from being
changed by an unauthorized person. The HMI password will remain inactive and
will thus not be required for altering parameter values until the default HMI
password has been replaced. Entering the HMI password successfully can be
selected to generate an event code. This feature can be used to indicate interaction
activities via the local HMI. For further information on the HMI, refer to the
Operator's Manual.
Non-volatile memory
REF 610 can be configured to store various data in a non-volatile memory, which
will retain its data also in case of loss of auxiliary voltage (provided that the battery
has been inserted and is charged). Operation indication messages and LEDs,
disturbance recorder data, event codes and recorded data can all be configured to be
stored in the non-volatile memory whereas setting values will always be stored in
the EEPROM.
Self-supervision
The self-supervision system of REF 610 manages run-time fault situations and
informs the user about an existing fault. There are two types of fault indications:
internal relay fault (IRF) indications and warnings.
When the self-supervision system detects a permanent internal relay fault, which
will prevent relay operation, the green indicator LED (ready) will start to blink. At
the same time, the IRF contact, which is normally picked up, will drop off and a fault
code will appear on the LCD. The fault code is numerical and identifies the fault
type.
1MRS 755310
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