ComAp MainsPro & ABB CM-UFD.M33 Solar Protection Relay

BCJ CONTROLS

ComAp MainsProThe ComAp MainsPro solar protection relay is used for grid-tie applications, and provides anti-islanding protection as required by Distribution Network Service Providers for solar over 30 kW.It can be used with any embedded generator systems such as gen sets, co-generation, orrenewable energy sources including photovoltaic plants or wind turbines. The ComAp MainsProgrants adjustable voltage, frequency, and loss of mains functions to safeguard the distributionnetwork and the generators.

With ComAp MainsPro, no special knowledge is needed for the installation process and noadditional units are required. This makes it an optimal solution for both untrained personnel andprofessionals. The unit is designed to comply completely with Utilities’ connection requirementsand statutory codes, offering a high level of protection and safety when working in parallel tothe mains.

ComAp MainsPro Product Features: Flexible supply voltage and measurement range

Suited for standard DIN rail installation or door-mount

User friendly interface with easy setting (no software tools needed)

Simple wiring with removable connectors

Remote binary communication

Compact design for installation in restricted spaces

ComAp MainsPro Product Features: Lost of Mains function and history track function (Last 5 events history log)

Integrated mechanical lock to secure your settings

Breaker failure protection

Watchdog relay output

Increased resolution of frequency protection settings

Resistance to frequency jumping

ABB CM-UFD.M33The ABB CM-UFD.M33 is a multifunctioning grid feeding monitoring relay. It trips the sectionswitch that is connected between the distributed generation and the public grid allowing thedistributed generation to disconnect in case of problems (e.g. unstable grid), faults, or gridmaintenance. The device provides different monitoring services to detect 10-minutes averageovervoltage, real time over- and under-voltage as well as over- and under-frequency.Additionally, monitoring of vector shift and ROCOF (rate of change of frequency) can beconfigured to trip the generation in a case of loss of mains.

ABB CM-UFD.M33 CharacteristicsMonitoring of voltage and frequency in single-phase and three-phase mains (2-wire, 3-wire or4-wire AC systems)

Over- and under-voltage, 10-minutes average value as well as over- and under-frequencymonitoring

Two-level threshold settings for over-/under-voltage and over-/under-frequency

ROCOF monitoring and vector shift detection are configurable

Interrupted neutral detection

Default settings in accordance with Great Britain Engineering Recommendations G59/3 andG83/2

ABB CM-UFD.M33 Characteristics True RMS measuring principle

All threshold values and tripping delays are adjustable

Error memory for up to 99 entries (incl. cause of error, measured value, relative timestamp)

Password setting protection

3 control inputs (e.g. for feedback signal, remote trip)

3 c/o (SPDT) contacts

Multiline, backlit LCD display

ABB CM-UFD.M33 ApplicationThe ABB CM-UFD.M33 is a grid feeding monitoring relay that monitors the voltage and thefrequency of the public low or medium voltage grid. Whenever measured values are not withinthe range of adjusted threshold values, the ABB CM-UFD.M33 causes the section switch to trip(consisting of 1 or 2 switching devices according to the applicable standard). This trippingdisconnects the power generation of systems such as photovoltaic systems, wind turbines, andblock-type thermal power stations from the grid. The fault is indicated by a LED and thecorresponding plain text failure message is displayed.

Technical Information: True RMS measurements for more accurate, reliable evaluation of failures

Vector Shift and Rate of change of frequency protections are available in a single unit to allowfor the best fit for each site

Symmetrical components allow for better detection of voltage asymmetry failures

Two stage settings of voltage and frequency safeguards cover short and long termdisturbances with fitting priority

Free assignment of five relay outputs allows for a large range of signaling and trip methods

Four binary switches to remotely alter unit operation

Technical Information: Adjustable time delay of Automatic fault reset to avoid need for personnel on-site

Universal power supply of 8 – 40 VDC, 85 – 265 VAC, and 110 – 370 VDC

Unit is independent on application due to the optional voltage range of 120/230/400 VACwith over-range to 156/290/520 VAC

Supports three-phase and one-phase applications

Last trip is recorded to provide evidence of trip cause

Kristy (Solar Citizens) and Steve (BCJ) 'Fair Price for Solar' Campaign

At BCJ Controls we produce Secondary Protection Switchboards

with solar protection relays for Commercial Solar over 30kW grid

connections.

BCJ Controls - commercial solar network protection unit -

switchboard manufacturing including protection relay & anti-islanding and zero export devices. BCJ Controls is a solar technology

company set up by ex-utility industrial sparkies. Between them

they have a large amount of experience in electrical grid

protection, as well as dealing with utilities on a day-to-day basis.

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