RI-tech s.r.o. > Products > Industry > Power utility

Power utility

  • 4M200 Test Block system

     The 4M200 Test Block system is an evolution of the 14 test circuit versions widely employed in the power utility sector. The primary difference is the incorporation of ‘finger safe’ test sockets which allow the use of shrouded 4mm banana plugs. A number of 4M200 Test Block configurations are available to suit specific protection and control applications as depicted in the wiring diagram examples. The 4M200 Test Block has 14…

  • 4M300 Test Block System

     The Test Block type 4M300 comprises fourteen (14) test circuits, each of which is connected to a separate pair of terminals at the rear of the case. During the normal operation of the associated protection equipment, each pair of terminals are connected together by a circuitshorting link. Changing the 4M300 Test Block from the normal service condition to the test condition is described below & depicted in figure 3 in…

  • 4M400 Flexible and high performance test block system

     The 4M400 Test Block is an evolution of our popular 4M300 system. The main difference is that each of the fourteen (14) test groups may be specified at time of order to provide automatic CT shorting and sequential circuit to suit specific protection schemes: Stage 1 isolation CT shorting Stage 2 isolation The main advantage of this approach is the improved level of safety and security afforded to the CT…

  • 4M402 Flexible and high performance test block system

     The 4M402 Test Block is an evolution of our popular 4M300 system. The main difference is that each of the twenty eight (28) test groups may be specified at time of order to provide automatic CT shorting and sequential circuit isolation to suit specific protection schemes: STAGE I Test Block Cover Extraction Isolation of Type 1 circuits STAGE II Isolation Plug Extraction CT Shorting Automatic shorting of all CT circuits…

  • 6R MATRIX Auxiliary, Trip & Supervision

     The 6R MATRIX range has been developed to provide design engineers with a modular system of auxiliary relays to meet a wide variety of system configurations. The 6R MATRIX system provides design engineers a high degree of flexibility to specify a custom relay configuration (Contacts, voltage, function, elements per case etc). Alternatively the 6R MATRIX Pre-defined range is suitable for comparison to industry standard models. Based on our well proven…

  • 6RA20 CT Shorting Relay

     The 6RA20 CT Shorting relays are a special derivative of the standard 6R MATRIX auxiliary relay. This model range has been designed specifically for CT shorting. All relay versions are supplied fitted with heavy duty contacts to achieve high voltage isolation across open contacts & high short term carry current. Contacts are constructed from solid silver, shaped & positioned to ensure very reliable, low resistance operation. Over travel of the…

  • 6RM QUAD Four Element Flag Relays

     The 6R QUAD range of four element flag relays are particularly suited to transformer protection panel applications where indication & signaling functions are required for events such as: Buchholz Gas Alarm Buchholz Oil Surge Trip Oil Temperature Alarm Oil Temperature Trip Winding Temperature Alarm Winding Temperature Trip (more…)

  • Alpha AR High Performance Auxiliary Relays

     The Alpha AR Series represents a new generation of electro-mechanical tripping relays for power utility protection and control applications. The AR is built on the Alpha relay platform and provides high performance and reliability while reducing production and supply lead times. Application of the AR auxiliary relays ensures reliable multi-contact operation combined with a high visibility mechanical flag. Five (5) contact version:                    AR5 Twelve (12) contact version:            AR12 2x Five…

  • Alpha TR High Speed Tripping Relay

     The Alpha TR Series represents a new generation of high speed electro-mechanical tripping relays for power utility protection and control applications. The TR is built on the Alpha relay platform and provides high performance and reliability while reducing production and supply lead times. Application of the TR multi-contact high-speed trip relays ensures fast operation of less than 8 ms. The unique patented design and topology ensures minimal contact bounce. (more…)

  • Alpha XR High reliability supervision relays

     The Alpha XR Series Relays are low burden electro-mechanical supervision relays for application on high security tripping and auxiliary supply circuits. The Alpha XR relays have been designed to provide a balance of low burden to minimize the possibility of circuit breaker mal-operation while maintaining a minimum contact whetting current to avoid nuisance alarm conditions. A key feature of the design is a high visibility flag indicator that can only…

  • D series, instantaneous power relays

     D relays, 4 C/O, 10A Heavy duty relays for demanding applications, switching of AC&DC voltages, resistive and/or inductive loads. Plug-in power relay Smitt-style pinning 4 C/O contacts Rated load 1 A /110 VDC1 , 10A/230 VAC1 Coil voltages 12...350 VDC, 12...440 VAC AC & DC coil (DC coil standard with back EMF diode) LED indicator Integrated 'snap-lock' retaining clip Dimensions 40 x 40 x 53 mm See the datasheet in the download section for all…

  • D-B series, high DC breaking capacity relays

     D-B relays, 4C/O, up to 7A/110V DC1 Heavy duty relays for demanding applications. Integrated magnetic arc blow-out function for higher DC breaking capacity. Plug in relay Smitt-style pinning 4 C/O contacts Rated load 7A /110V DC1 , 10A/230V AC1 Coil voltages 12...350VDC, 12...440VAC AC&DC coil, DC with standard back EMF diode LED indicator Integrated 'snap-lock' retaining clip Magnetic arc blow-out (option B) Dimensions 40 x 40 x 53 mm

  • D-R4, fast relay (pull-in)

     D-R4, fast relay (pull-in) Heavy-duty, fast relay for demanding applications. Fast switching/pull-in Plug in relay Fast switching Smitt-style pinning 4 C/O contacts Rated load 1A /110V DC1 Coil voltages 6...220VDC DC coil Integrated 'snap-lock' retaining clip Back EMF diode Dimensions 40 x 40 x 53 mm

  • Delta 1S27 Arc Flash Monitor – 4 point + 1 linear sensor / 3 zones

     Utilised in either new installations or as a simple retrofit in existing installations, the 1S27 provides high speed detection and signalling of arc flash hazards for application in air insulated metalclad switchgear. Arc Fault protection schemes may be implemented on an Arc only basis, or alternatively a Current Check may be employed where additional security is warranted. A current checked scheme may be implemented by making use of available protection…

  • Delta ARD4 Compact electro-mechanical auxiliary relays

     The Delta ARD4 relay provides a robust and reliable interface between protection and control system circuits. A more economical alternative to traditional auxiliary relays, the Delta ARD4 provides a compact, flexible and high performance solution while meeting relevant IEC standards. A wide voltage range and standard hand reset flag reduces the number of model variations. The Delta range is packaged in a size 2, 2U high case that may be…

  • Delta TRD4 Compact electro-mechanical tripping relays

     The Delta TRD4 is a high speed, high burden electro-mechanical tripping relay for power utility protection and control applications. The TRD4 is built on the Delta relay platform providing high performance and reliability while reducing production and supply lead times. Application of the Delta TRD4 multi-contact high-speed trip relays ensures fast operation of less than 10 ms. (more…)