SIA-B Dual & Self-powered Relay OC&EF Protection Relays

SIA-B Dual & Self-powered Relay OC&EF Protection Relays

MODEL WITH  SPECIFIC CTs

  • Dual & Self powered overcurrent protection relay using the operating current through three specific current transformers fitted on the lines. These transformers are also used to obtain current measurements. Optionally, SIAB relay can be used with auxiliary power supply (24 Vdc, 110 Vac or 230 Vac).
    The equipment can be occasionally supplied by an external battery portable kit (KITCOM).
  • Internal commissioning battery as optional.
  • 50, 50/51, 50N, 50/51N protection functions.
  • Trip block for switch disconnector + 49T + 49 as optional.
  • Its compact size makes SIA-B really easy to install and its light weight helps the customer to save costs in transport.
  • Low power consumption (0.5 W, 24 Vdc).
  • Non-volatile RAM memory in order to store up to 100 events and 4 fault reports, without power supply thanks to its internal RTC (Real Time Clock).
  • USB connection on the front (Modbus RTU communication protocol).
  • There are bistable magnetic indicators which indicate the trip cause, maintaining their position even though the relay loses the supply (flags).
  • In self powered modes, SIA-B starts-up from 0.4 Is of primary three phase current using specific CTs.

With specific CTs

PROTECTIONS FUNCTIONS

50 Phase instantaneous phase overcurrent
51 Phase inverse time overcurrent
50N Neutral instantaneous overcurrent
51N Neutral inverse time overcurrent
49 Thermal image
49T External trip
Trip Block for switch disconnector

MODEL WITH  STANDARD  CTs

  • Overcurrent protection relay with self powered and dual powered (self + auxiliary) options.
  • The relay is self powered using the operating current through three /1 (<2.5VA) standard current transformers fitted on the lines. These transformers are also used to obtain current measurements. Besides, the SIA-B relay can be used with auxiliary power supply (24 Vdc-300 Vdc/ 85-230 Vac).
    The relay can be also supplied by a USB cable connected to the laptop, with USB KITCOM adapter or a standard power bank.
  • Internal Commissioning battery included.
  • 50, 50/51, 50N/G, 50/51 N/G, 49, SHB, 86, PLC protection functions.
  • 49T function available through configurable inputs.
  • 52 function to control the state of the circuit breaker.
  • 50_2, 50G_2, CLP, 46, 50BF and trip block for switch disconnector as optional.
  • Specific test menu is provided.
  • High electromagnetic compatibility.
  • The installation and subsequent maintenance of batteries is eliminated. The operating costs of the centre are reduced.
  • Really low start-up levels: 0.07 times of the nominal current in three phases / 0.16 the nominal current in single phase.
  • The line opening mechanism is activated by means of a striker PRT, operated by the energy supplied by the relay itself.
  • There are 4 configurable LEDs. When the relay is switched off, their previous states can be checked by powering the relay up (by self-powering the relay, through USB cable, auxiliary voltage or pressing commissioning battery).
  • TheRELAY is fitted with the demand of current (load data profiling) with the following characteristics: Number of records: 168 Recording mode circular Sampling rate (interval): configurable through communications: 1 – 60 min.
  • Non-volatile RAM memory in order to store up to 1.024 events, disturbance fault recording (DFR- 20 fault reports and 10 oscillographic records in COMTRADE format), without power supply thanks to its internal RTC (Real time clock).

With standard CTs

PROTECTIONS FUNCTIONS

50 Phase instantaneous phase overcurrent
50/51 Inverse time phase overcurrent
50N/G Neutral instantaneous overcurrent
50/51N/G Inverse time neutral overcurrent
46 Phase balance current
49 Thermal image
CLP Cold Load Pick-up
SHB SEcond harmonic blocking
50BF Breaker failure monitoring
52 Breaker wear monitoring
86 Trip output lockout with PLC
49T External trip
Trip Block for switch disconnector

Specifications