Numeric Protection Relays

Product Details:

3 Ph Over Current & Earth Fault Relay with RS485 port have Autoreclosure feature inbuilt. Best for LT & HT Switchgear use.

Product Details:

MiCOM series 10 Relays fulfils the basic requirements of Buildings and small Industries applications with particular focus on overcurrent and motor protection.

Available Type:

Auxiliary powered

Self powered/dual powered

Technical Data Description:

Nominal Voltage (Vnom): 60-250 V(DC)

Nominal Voltage (Vnom): 90-240 V(AC)

Auxiliary Voltage: >90 V(AC), >90 V(DC)

Application:

Overcurrent & Earth Fault Protection.

Motor Protection

Protection Functions Available:

Thermal overload (49)

Ground fault (50/51N)

3 Phase overcurrent (50/51P)

Circuit breaker failure (50BF)

Additional Information:

• Item Code: MicomP111

Product Details:

Features:

Flexible Current Relay

Full set of measurement

Easy settings

Effortless installation  

Product Details:

MiCOM P341 best for use in Grid Islanding Scheme.Loss of Mains With embedded generators running in parallel with the normal public supply there is a risk that, due to fault clearances on the external system, the embedded generator may become disconnected (islanded) from the main supply network. The machines may continue to supply external load and there is a significant risk the islanding may cause loss of system earth where the system earth is on the star winding of a network transformer, poor quality of supply to local loads and unsynchronised reconnection due to auto-reclosure of the remote circuit breaker. A loss of the mains/grid (or islanded) condition can be detected using voltage, frequency and power protection, but, when the machine rating closely matches the connected load this condition may be difficult to detect. Two methods of detection are therefore offered, rate of change of frequency and voltage vector shift.Rate of Change of Frequency The four df/dt stages can be used to detect the fluctuation in frequency that will occur as the machine adjusts to the new load conditions following loss of the grid or can be used for load shedding applications. The number of frequency averaging cycles, number of protection iterations, operating mode – fixed or rolling window and direction of operation can be set to suit the application. To improve stability for external system events an adjustable definite time delay can be used.Voltage Vector Shift This protection measures the instantaneous change in the three phase voltage angle that occurs when the connection to the main supply network is lost. To provide stability this element must be less sensitive than the rate of change of frequency element. However, it operates without any intentional time delay, providing fast tripping.Phase Overcurrent Four independent overcurrent stages are available. Each stage may be selected as non-directional or directional (forward/reverse). All stages have definite time (DT) delayed characteristics, two of the stages may also be independently set to one of nine inverse definite minimum time (IDMT) curves (IEC and IEEE). The IDMT stages have a programmable reset timer for grading with electromechanical relays, to reduce autoreclose dead times and to reduce clearance times where intermittent faults occur. The phase fault directional elements are internally polarised by quadrature phase-phase voltages, and will make a correct directional decision down to 0.5V (Vn = 110/120V) or 2.0V (Vn = 380/440V). A synchronous polarising signal is maintained for 3.2s after voltage collapse to ensure that the instantaneous and time delayed overcurrent elements operate correctly for close-up three phase faults.Standard Ground Fault The standard ground fault element operates from a residual current that is derived internally from the summation of the three phase currents. The directionality of the ground fault elements is provided by either residual voltage or negative sequence voltage. Voltage transformer supervision (VTS) can be used to block the directional element or to revert it to nondirectional.Sensitive Ground Fault A core balance CT should be used to drive the sensitive ground fault function. The directionality of the sensitive ground fault elements is provided by the residual voltage.

Product Details:

Protection device: Non-Directional Overcurrent Protection - ArgusCase, I/O and Fascia: Size 4 Moulded case, 4CT, 3 Binary Inputs/3 Binary Outputs, 10 LEDsMeasuring input: 1/5 A, 50/60HzAuxiliary voltage: AC/DC 60-240V, Binary input threshold 88 VAC/ VDCProtective Cover : Standard version No CoverCommunication: Front Port : USBFront Fascia: Standard Version with Breaker Control Push ButtonsProtection Function Packages: Standard version - included in all models7SR10 Order number: 7SR10021KA102CA0

Product Details:

MICOM P123

Product Details:

We are an eminent organization engaged in offering high grade IDMT Relay. Manufactured using premium quality raw material, offered regulating relay is in-line with the universally accepted quality standards. To ensure the higher level of patron satisfaction, we provide this regulating relay in accordance with the specifications detailed to the patrons.

Product Details:

Protection device: Non-Directional Overcurrent Protection - ArgusCase, I/O and Fascia: Size 4 Moulded case, 4CT, 6 Binary Inputs/6 Binary Outputs, 10 LEDsMeasuring input: 1/5 A, 50/60Hz with SEF inputAuxiliary voltage: AC/DC 60-240V, Binary input threshold 88 VAC/ VDCProtective Cover : Standard version No CoverCommunication: Front Port : USB and Rear PortFront Fascia: Standard Version with Breaker Control Push ButtonsProtection Function Packages: Standard version - included in all models7SR10 Order number: 7SR10032KA202CA0

Product Details:

Available Models: (MiCOM MiCOM P631, MiCOM P632, MiCOM P633, MiCOM P634)

The MiCOM P63x series differential protection devices are intended for the fast and selective short circuit protection of transformers, motors, generators and other installations with two, three or four windings, respectively. The MiCOM P63x series provides high-speed three system differential protection using a triple-slope characteristic and two high-set differential elements in combination with transformer inrush restraint, overfluxing restraint and through-stabilization. Amplitude and vector group matching is done just by entering the nominal values of transformer windings and associated CTs.

Customer Benefits:

Multiple communication protocols and interfaces, including IEC 61850

CB Failure protection

Detachable HMI option

Application:
MiCOM P63x series differential protection devices provide a wide range of protection functions. The device selection depends on the protected object and the required protection scheme:

P630C: Two-end/winding schemes (two 3 pole CT inputs)

P631: Two-end/winding schemes (two 3 pole CT inputs)

P632: Two-end/winding schemes (two 4 pole CT inputs, one VT input)

P633: Three-end/winding schemes (three 4 pole CT inputs, one VT input)

P634: Four-end/winding schemes (three 4 pole CT inputs, one 3 pole CT input, one VT input)

Additional Information:

• Delivery Time: 10-12 Weeks

Product Details:

The MiCOM generator protection relays provide flexible and reliable integration of protection, control, monitoring and measurement functions. Extensive functionality is available to provide complete protection and control with five models for a wide range of applications, covering most installations from small generators up to sophisticated systems including generator-transformer applications. The variable number of opto inputs and output contacts available allow complex protection schemes to be created using the relay’s powerful but easy to use “Programmable Scheme Logic” (PSL).

Features:

• Extensive functionality to meet all generator and transformer protection applications
• Programmable Scheme Logic to allow easy customization
• Flexible communications options including IEC 61850
• High break output contacts - no reliance on auxiliary devices
• Reduced cost of ownership via redundant ethernet ports

 

Specification:

• Auxiliary Voltage (DC): 48-110 V/110-250V
• Auxiliary Voltage (AC): 100-240 V

Product Details:

The MiCOM P12x/y relays provides features for easy adaptation and are suitable for all applications where overcurrent and earth-fault protection are required.

The MiCOM P12x non-directional relays ranges from the single phase/earth fault P120 up to the multifunction three phase and earth fault P123.

The MiCOM P12y directional relays ranges from the single phase/earth fault P125 up to the multifunction three phase and earth fault P127, complete of voltage and frequency protection functions.

Users particularly appreciate the friendliness of the Human Machine Interface and the easy setting of the relays (that can be fully set through the front HMI or using MiCOM S1 setting software).

In addition to its protection function, MiCOM P12x/y provides full measurement and monitoring information necessary for efficient maintenance and post-fault analysis.

Several communication protocols allow easy interfacing of the MiCOM P12x/y relays in most of substation control or SCADA systems.

Additional Information:

• Delivery Time: 8-10 Weeks

Product Details:

We provide all ranges of Feeder Protection Relays. 
Protection Functions:
Three-phase overcurrent (50/51) & earth overcurrent (50N/51N)
Three-phase & earth-fault directional overcurrent (67/67N)
Thermal overload (49)
High impedance restricted earth-fault (64N)
Negative sequence overcurrent (46)
High impedance three-phase differential protection (87)
Under / over voltage (27/59)
Under / over frequency (81U/O)
Rate of frequency (81R)
Circuit breaker failure protection (50BF)
Voltage controlled overcurrent (51V)
Voltage transformer supervision (VTS)
Autorecloser (79)
Undercurrent protection (37)
Directional power protection (32)
Broken conductor (46BC)

Product Details:

MiCOM P14x feeder management relays provide an integrated solution for the complete protection, control and monitoring of overhead lines and underground cables from distribution to transmission voltage levels. The wide range of auxiliary functions provides the user with sufficient information to efficiently maintain the power system and its components including circuit breakers, CTs, VTs, etc. Connecting the relay to virtually any kind of Substation Automation System or SCADA is made possible by the wide range of updated communication protocols, including IEC 61850. A range of hardware interfaces are available for easy integration into any new or legacy system.

Customer Benefits:

• Wide auxiliary supply voltage range
• Option of multiple communication protocol and interfaces, including IEC 61850
• User customisable menu text

 

Application:

• The MiCOM P14x range is suitable for all applications where over current protection is required. It is suitable for solidly earthed, impedance earthed, Petersen coil earthed and isolated systems.
• First application shows a parallel transformer protection where the P141 replaces many of the discrete protection elements normally associated with the LV side of the transformer.
• The protection includes non-directional and directional phase over current and earth fault, restricted earth fault and circuit breaker failure protection.
• The second application shows a P143 protecting a plain feeder using phase over current, sensitive earth fault, negative sequence over current, thermal protection and breaker failure protection. The integral auto recloser with check synchronizing can be configured to grade with downstream reclosers.

Additional Information:

• Delivery Time: 8-10 Weeks

Product Details:

The MiCOM range of relays offers scalable levels of functionality and hardware options to best suit your protection requirements, and allows you to choose the most cost effective solution for your application.The MiCOM protection relay range provides the capability for a wide variety of protection, control, measurement, monitoring and communication.The versatile hardware and common relay management software (MiCOM S1 studio) allows a simple configuration and installation in different applications.A standard and simple user interface across the entire range makes MiCOM ideal in any environment, from the more complex bay level control with mimic, to the most simple LCD display with menu interrogation. Keep informed to manage betterEvery MiCOM relay provides you with intuitive access to all system information in your own language so that so that you can manage your electrical installation effectively.If a problem occurs, clear and complete information puts you in a position to make the right decisions immediately. The electrical supply is restored without delay. Maintain installation availabilityMiCOM relays maintain high energy availability thanks to their diagnostics function that continuously monitors the network status.In-depth analysis capabilities and high reliability ensure that the equipment is de-energised only when absolutely necessary. Risks are minimised and servicing time reduced by programming maintenance operations. MiCOM series allows complete optimisation of your solution.