Archives

Functional Features

– Modular hardware

– Selectable protection functions

– Multiple applications

– Computerized menu-assisted setup

– All-digital signal processing

– Continuous hardware self-monitoring

– Cyclic test program mainly performed by software

– Parameterization and recording of set values via PC

– Display of measured values

– Event display, acknowledgement and printing

– Interference logging

– Self-logging

– Long-term stability

– Communication and coordination with control stations

– Available in two design versions: REG216 / REG216 Classic

Areas of application

The REG216 is used to protect generators and transformers.

The modular hardware and software design allows extremely flexible installation.

The combination of software libraries and hardware allows www.cniacs.com simple adaptation to the size of the primary system and the required protection scheme.

The combination of software libraries and hardware modules allows easy adaptation to the size of the primary system and the required protection scheme.

Modules. As a result, economical solutions can be realized in a wide range of applications.

Economical solution.

The REG216 software system provides a library of protection functions. The following table lists the functions applicable to generator and transformer protection.

Different levels of redundancy can be selected.

The availability and reliability of the protection can be selected according to the application in the following ways

For example, the auxiliary power supply unit for the entire system can be replicated.

Standard interfaces make the REG216 compatible with different process control systems.

All hardware can be housed in a single compartment, which provides further shielding against inductive interference and physical protection against dust, etc.

All hardware can be accommodated in a single compartment, which provides further shielding from inductive interference and physical protection from dust.

The REG216 is available in 17 predefined rack configurations with a limited number of I/Os, but is equipped with the same SW library as the classic system.

Protective relays for other functions are not part of the EG216 and can be installed in compartments and interconnected with the REG216 accordingly.

Interfaces to the main system

The following modular components provide the interface between the REG216 and the power system.

Input transformer assembly

216GW62 This assembly is used to adjust the signal level and to isolate the primary system CT and PT circuits from the electronic circuits of the protective devices.

One PT and two CTs are available to meet different accuracy and dynamic performance requirements.

Up to 12 transformers can be accommodated, selected according to application requirements. Up to four components, i.e. 48 inputs, can be used.

Auxiliary relay and optocoupler assembly 216GD61a

This assembly is for use with the REG216 version. It provides eight trip relays,

Each relay has powerful potential-free trip contacts (with surge circuit), 16 auxiliary relays and 16 optocouplers.

relays and 16 optocoupler input circuits. Up to four assemblies are available.

Input Auxiliary Relay Assembly 216GE61

Up to 16 auxiliary relays to provide full potential isolation for digital input signals.

Output Auxiliary Relay Assembly 216GA61

Up to 16 auxiliary relays providing full potential separation for digital output signals (two contacts per signal).

Trip Auxiliary Relay Assembly 216GA62

Provides up to 8 powerful potential-free trip contacts and circuits that provide high-speed operation (surge circuits) and reduced consumption after operation (economy circuits).

The Trip Auxiliary Relay Assembly is available with an optional trip logic diode matrix for direct coupling of external signals.

Matrix for direct coupling of external signals The REG216 can also read and process external signals via digital inputs.

Different trip circuit monitoring arrangements for use with output unit 216DB61 and input auxiliary relay assembly 216GE61 are available.

Product overview

3.1 Purpose of the relay

The feeder protection relay REF610 is a multifunctional protection relay primarily used to protect incoming and outgoing lines in various feeder applications.

The relay is based on a microprocessor environment. A self-monitoring system continuously monitors the operation of the relay.

The human-machine interface includes a liquid crystal display (LCD) that makes local use of the relay safe and easy.

The relays can be controlled locally via serial communications from a computer connected to the front communication port.

Remote control is available through a serial communications bus connected to the rear connector of the control and monitoring system.

3.2. Features

* Three-phase non-directional overcurrent protection with timing or IDMT characteristics and low rectification phase.

* Three-phase non-directional overcurrent protection, high rectification phase

* Three-phase non-directional overcurrent protection, instantaneous stage

* Non-directional ground fault protection with timing or IDMT characteristics, low setting stage

* Non-directional ground-fault protection, high-calibration phase.

* Phase discontinuity protection

* Three-phase cable thermal overload protection

* Arc protection

* Two lens sensors for arc detection (optional)

* Automatic adjustment of reference level according to backlight intensity

* Arc detection by remote light signal

* Automatic reclosing 1…. .3 times

* Circuit breaker fault protection

* Trip counter for circuit breaker status monitoring

* Trip circuit monitoring with routing of warning signals to signal outputs

* Trip lockout function

* Four accurate current inputs

* User selectable rated frequency 50/60 Hz

* Three normally open power output contacts

* Two change-over signaling output contacts and three additional change-over signaling output contacts on optional I/O module

* Output contact functions can be freely configured according to requirements.

Self-Monitoring

The relay’s self-monitoring system manages fault conditions during operation and notifies the user of existing faults.

There are two types of fault indications

Internal Relay Fault (IRF) indication and warning.

When the self-monitoring system detects a permanent internal relay fault and prevents the relay from operating, the green LED (Ready) will flash.

At the same time, the normally open IRF contact (also known as the IRF relay) will open and a fault code will be displayed on the LCD. The fault code is numeric and identifies the type of fault.

Time Synchronization

Time synchronization of the relay real-time clock can be achieved in two different ways

Serial communication via communication protocol or via digital input.

When time synchronization is achieved via serial communication, the time is written directly to the relay’s real-time clock.

Any digital input can be configured for time synchronization and used for minute pulse or second pulse synchronization.

The synchronization pulse is automatically selected, depending on the time range in which the pulse occurs.

Two pulses need to be detected within an acceptable time range before the relay activates pulse synchronization.

Conversely, if the synchronization pulse disappears, the relay requires the equivalent of four pulse time ranges to de-synchronize the pulse.

The time must be set manually once via serial communication or the HMI.

When setting the time via serial communication and using minute pulse synchronization, only the year-month-day-hour-minute is written to the relay’s real-time clock;

When using seconds pulse synchronization, only year-month-day-hour-minute-second is written. The relay’s real-time clock will round to the nearest whole second or whole minute.

depending on whether seconds pulse synchronization or minutes pulse synchronization is used. When setting the time via the HMI, the entire time will be written to the relay’s real-time clock.

If the difference between the synchronization pulse and the relay’s real-time clock for seconds pulses exceeds ±0.05 seconds, or for minutes pulses exceeds ±2 seconds, the synchronization pulse will be rejected.

Time synchronization is always triggered on the rising edge of the digital input signal. The time is adjusted by accelerating or decelerating the relay clock.

In this way, the clock neither stops nor jumps suddenly during time adjustment.

Typical accuracy of time synchronization via digital inputs is ± 2.5 ms for second pulse synchronization and ± 5 ms for minute pulse synchronization.

Main advantages

Devices can be used for a wide range of applications

Ranging from simple protection devices as backup protection to specialized protection devices

Well-established and modernized technology

Arc detection as an option

REF620 as a dedicated feeder protection device for the protection, control, measurement and monitoring of public and industrial power distribution systems.

REF620 IEC feeder protection and measurement and control device, as a dedicated feeder protection device, is specially designed for the protection, control, measurement and monitoring of public and industrial grids, including radial, ring and mesh grids.

The REF620 provides feeder overcurrent and earth fault protection that can be applied to both ungrounded neutral networks and resistance or impedance neutral grounded networks.

In addition, utilizing the unit’s advanced station-to-station communication capabilities, the REF620 can also be used for ring mesh distribution network or radial network protection.

The REF620 IEC Feeder Protection and Measurement Control Unit is available in single and dual busbar configurations, with one or two circuit breakers and multiple switchgear configurations for each busbar configuration.

The unit supports a large number of manual and motorized disconnect and ground switches. The number of available I/Os can be increased as required by ABB’s RIO600 remote I/O unit.

The REF620 IEC Feeder Protection and Control Unit features support for the IEC61850 communication standard for substations, covering both vertical and horizontal communications.

It includes GOOSE telegrams with switching and analog signals, and constant value adjustment based on IEC 61850-8-1.

The REF620 also supports DNP3. IEC 60870-5-103 and Modbus® protocols.

The REF620 provides an optional Ethernet port for non-delayed redundant Ethernet or a ring self-healing RSTP communication in the event of a communication failure via PRP or HSR protocols.

This solution eliminates the effects of a single point of failure and improves communication reliability. The solution can be applied to Ethernet based IEC 61850. Modbus® and DNP3 protocols.