Protective relay is a device which is activated because of electrical quantity change such as volt and current or physical quantity like thermal degree and oil move and it leads to start other devices and at last break the circuit by circuit breaker . It is used for earth or air feeders in distribution system power plants in different voltage levels. It is used for protection of low or medium voltage engine in industry like power station and oil refinery in order to warranty engine function and its safety such as assurance about overload status. Main protection of transformer means counting (unit) differential protection which is unit protection. With regard to transformer function importance toward continuous electrification , power transformer protection has a great importance. impedance protection is used for protection of transmission, so that it is possible to discover the kilometer area that the error was happened in it. This kind of protection is mentioned as main protection of airlines. borna niroo karan company(Brnika) is the exclusive representative of Ziegler and Sprecher Automation Contrel on buying, selling, consulting services for automation systems and protective relays including protective relays .

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  • Model: SPRECON-E-P DS..6-0
  • Order code: SPRECON-E-P DS..6-0
  • Brand:
  • Country: Austria
  • With SPRECON-E-P DS6-0 Sprecher Automation offers a compact line of overcurrent-time protection devices . The compact SPRECON-E-P DS6-0 protection devices are equipped with standardised hardware modules . The standard basic functionalities can be extended by packages which include additional protection functions .

  • Model: SPRECON-E-P DS..6-1 | SPRECON-E-P DS..6-2
  • Order code: SPRECON-E-P DS..6-1 | SPRECON-E-P DS..6-2
  • Brand:
  • Country: Austria
  • The overcurrent-time protection acts as the main protection function . The devices include standardised hardware modules and firmware . They all provide protection functions of the same range . Beside typical protection functions and measured-value collection , protection devices also feature control of circuit-breakers .

  • Model: Model 252 , Model 253
  • Order code: 252-PAU , 252-PAO , 253-PAD , 253-PAV , 253-PAP
  • Brand:
  • Country: Germany
  • Current Protectors provide continuous surveillance of circuit . When the measured current the monitored moves outside the set point limit, the relay will operate . An adjustable time delay is provided to prevent the relay from tripping for a predetermined period to prevent nuisance tripping . For 3 phase systems , the sequence of connection is not important .

  • Model: AC Voltage Relay with adjustable Differential
  • Order code: AC Voltage Relay with adjustable Differential
  • Brand:
  • Country: Germany
  • AC Voltage Differential Relay provides continuous surveillance of the monitored circuit . When the measured voltage moves outside the set point limit , the relay will operate giving an alarm and or initiation signal . An illuminated LED indicates when the relay is energised . The 3 Phase, 3 or 4 wire models protect each phase independently .

  • Model: SPRECON-E-P DQ..6-1 | SPRECON-E-P DQ..6-2
  • Order code: SPRECON-E-P DQ..6-1 | SPRECON-E-P DQ..6-2
  • Brand:
  • Country: Austria
  • SPRECON-E-P DQ..6 devices provide differential protection for transformers and motors. The devices include standardised hardware modules and firmware . Beside typical protection functions and measured-value collection , protection devices also feature control of circuit-breakers . all operations can be accomplished with the detachable HMI control panel . Hence, protection configurations can be locally carried out beside usage of the operating program .

  • Model: AC Voltage Relay With Adjustable Time Delay
  • Order code: AC Voltage Relay With Adjustable Time Delay
  • Brand:
  • Country: Germany
  • AC Voltage Protection Relay provide continuous surveillance of circuit . When the measured voltage the monitored moves outside the setpoint limit , the relay will operate after the selected time delay , giving an alarm and or initiation signal . Relays normally energise on over volts and de-energise on under volts . An illuminated indicates when the relay is LED energised . 3 phase 3 or 4 wire models protect each phase independently.

  • Model: 252-PHU , 252-PHO , 253-PHD
  • Order code: 252-PHU , 252-PHO , 253-PHD
  • Brand:
  • Country: Germany
  • frequency protectors provide continuous surveillance of the monitored circuit . When the frequency moves outside the set point limit, the relay will operate giving an alarm , control or tripping single . An illuminateda LED indicates when the relay is energised .

  • Model: Combined Under/Over Voltage and Frequency
  • Order code: 256-PHV
  • Brand:
  • Country: Germany
  • Combined Voltage and Frequency Relay provide continuous surveillance of the monitored circuit . When the voltage or frequency moves outside the set point limit the respective relay will operate giving an alarm, control or tripping signal . An illuminated LED indicates when the relay is energised .

  • Model: 252-PVR
  • Order code: 252-PVR
  • Brand:
  • Country: Germany
  • Ziegler Phase Sequence and Phase Failure Relay is designed to monitor the correct phase rotation or sequence of 3 phase system L1 , L2 , L3 . Rotating machines are particularly vulnerable to incorrect phase sequence .

  • Model: 252-PSF , 252-PSG
  • Order code: 252-PSF , 252-PSG
  • Brand:
  • Country: Germany
  • Protector phase Balance relay provides continuous surveillance of a 3 phase , 3 or 4 wire system and protects against : Phase Loss , Phase Reversal , Sequence , Phase Unbalance , System Under Voltage . A red LED indicates that the supply is within limits & that the output relay is energised . The relay will not energise if the supply is connected in the wrong sequence .

  • Model: 256-PAS , 256-PAT , 256-PAQ , 256-PAR
  • Order code: 256-PAS , 256-PAT , 256-PAQ , 256-PAR
  • Brand:
  • Country: Germany
  • Reverse Power Protector provides continuous surveillance for a.c. generators operating in parallel or for boosting mains supplies . On site adjustment of the trip point and time delay ensures accurate protection against “motoring’ in the event of engine failure and prevents tripping from surges during synchonising .

  • Model: 256-PLL , 256-PLD
  • Order code: 256-PLL , 256-PLD
  • Brand:
  • Country: Germany
  • The synchro-check relay can be used to assist in the semi-automatic parallelling of two AC power systems . The volt-free relay contacts change state when the voltage level, phase relationship and frequency are within the selected synchronising limits .

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