The Grid Protection Units for Solar PV by BCJ

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Grid Protection Units for Solar PV

• BCJ Controls

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Grid Protection Units

• At BCJ Controls we support solar installers by
  building grid protection units to meet the
  utility's requirements including solar
  monitoring, PLC ramping, ethernet, wifi and 3G.

Protection Units for 30kW Solar

• The utility (or DNSP) will normally specify extra
  protection for installations over 30kW. Our
  Secondary Protection Units reflect the
  requirements of the DSNPs when connecting to the
  grid.

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What is Secondary Protection?

• Secondary protection is the protection after
  the solar inverter and before the grid. It is
  comparable to Primary Protection, which is within
  the inverter. Secondary protection is generally
  used where the installation is greater than 30kW
  and often includes Anti-Islanding protection,
  over/under voltage, over/under current and
  frequency protection.

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Our control and protection boards can offer the
following features

• Mains Disconnect / Anti-Islanding Protection
  Function
• Suitable for up to any number of inverter inputs
• Plug and play easy installation
• Technical Support Available
• Powder coated IP65 enclosure
• Approved in all states
• Made in Sydney to Australian Standards

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Solar Protection Relay

• Export Allowed
• Some DNSPs may allow you to export as much power
  as you want to the grid. Here you have to have
  the minimum standard of relay to protect the
  power quality being exported. For these
  applications a relay such as the ComAp
  MainsPro is suitable.
• Zero Export
• Some DNSPs limit the amount of power that you can
  export onto the grid. As well as power quality
  protection, they require that the solar system
  has protection so that it doesn't export more
  power than allowed. Here we use a relay such as
  the ComAp InteliPro. 

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Options

• eGauge
• Using CTs, Solar production and energy
  consumption can be viewed remotely with the
  eGauge monitoring device. Records are stored for
  the most recent 30 years.
• PLC Controller
• For ramping control options we use a Programmable
  Logic Controller. This is the industry standard
  for reliability and robust operation.
• Motorized Circuit Breaker
• We make use of MCBs to consolidate isolators and
  contactors, as a space saving design feature.
• Ethernet
• For additional communications such as remote
  monitoring and reporting, we can install an
  industrial-grade Ethernet hub.

• Blue'Log
• This remote access data logger can be used with
  weather stations for sophisticated site
  information. Allows the installer to carry
  out Operations Maintenance Contracts.
• HMI
• Our boards can be fitted with an optional HMI
  display. Standard size is 5, but we are happy to
  accommodate any custom requirements for your
  project.
• LGC Meter
• An LGC Meter can be installed within the grid
  protection unit to allow the owner to measure the
  production of Large-Scale Grid Credits.
• Stainless Steel Enclosure
• Recommended when the enclosure is to be mounted
  outdoors.

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The Company
BCJ Controls we produce Secondary Protection
Switchboards with solar protection relays for
Commercial Solar over 30kW grid connections.
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BCJ Controls
(02) 9534 84652,17 Lorraine St, Peakhurst NSW
2210 AustraliaVisit uswww.bcjcontrols.com.au