FANOX SIA D, Руководство пользователя, Страница: 13 / 117

www.fanox.com
SIA-D_
Rev. 07
13 / 117
ISO 9001:2008
A6
C-phase current output for metering
E1-E2
Output 1, NC contact
A7
Neutral current input for metering
E3-E4
Output 2
A8
Neutral current output for metering
E5-E6
Output 3
B1
RS485 – gnd
E7
Output 4, NO contact
B2
RS485 – B-
E8
Output 4, common contact
B3
RS485 – A+
E9
Output 4, NC contact
C1
Voltage neutral input
V1
Auxiliary v
C2
Neutral voltage output
V2
Auxiliary voltage -
╧ Grounding bolt
3. DESCRIPTION
3.1. Introduction
Worldwide, the energy sector is currently undergoing a profound change as a result of high levels of
energy demand; more distribution lines and advanced supervision systems are required. Given the
need for creating intelligent infrastructure, FANOX has developed the SIA family of products to carry
out this function.
The family of SIA relays is designed to protect the secondary transformation and distribution centres
of electricity grids. Protection features include protection against instantaneous and inverse time
overcurrent (for the phases and the neutral), and it also has external trip support (temperature,
pressure, etc.) depending on the characteristics of each model.
The protection functions can be enabled selectively by using both the front panel and the
communications links to the SIcom program, allowing for precise coordination with other equipment.
Additional benefits include that all of the models have been designed to be supplied from an external
battery. This is aimed at facilitating event management and the commissioning of centres, as well as
allowing it to operate properly under adverse conditions.
3.2. Equipment description
The SIA-D equipment is a protection relay designed for secondary distribution.
It is supplied with 110-230 Vac / 90-300 Vdc auxiliary voltage. It is possible to choose 24-48 Vdc
auxiliary for each model. As for the rest of the SIA family, it can be supplied through its front RS-232
communications port via an external battery, using the KITCOM adapter. This facilitates the start-up
of the centres and the management of events. The operation of the outputs is not guaranteed when
the SIA-D equipment is supplied from an external battery.
As well as the functions to protect against instantaneous phase and neutral overcurrents and phase
and neutral inverse time overcurrents, it is possible to choose two neutral directional units or one
isolated neutral directional unit for each model. It is also equipped with a trip blocking to protect the
switchgear in centres that combine switchgear and fuses.
All models include a breaker management block, which monitors the switch condition, the number of
breaks and the accumulated amps. It generates an indication if these are excessive, it determines
whether or not an Opening fault has occurred and allows the breaker close and
open commands
from the HMI and via the communications port (either locally or remotely).
Revision B includes in all the models two new characteristics: