3.5 DISPLAY AND MONITORING
3.5.1 CS inverter display
The CS inverter is equipped with a multi language display
for on site monitoring and control. Refer to chapter 8
Display for details.
3.5.2 Remote monitoring via RS485
The SunMaster CS supports RS485. This bus facilitates
remote monitoring via the RS485 network using a
DataControl datalogger. Monitoring can be accomplished via
internet or via a telephone connection. See also section 7.4.
If you opt for remote Monitoring & Control, please contact
your Mastervolt supplier.
3.5.3 Remote monitoring and control via MasterBus
The CS inverter can communicate with an optional
StringMaster and isolation transformer via the
MasterBus network.
3.6 INGRESS PROTECTION AND OPTIMA COOLING
The SunMaster CS consists of two separate compartments.
Rubber seals provide IP65 protection of the power
electronics against ingress of dust and humidity. The
cooling compartment provides IP44 protection and contains
only components resistant to dust and humidity. By keeping
the inverter cool, the intelligent Optima Cooling algorithm
helps to reduce losses and extend inverter life.
3.7 ANTI ISLANDING
The SunMaster CS is equipped with an anti-islanding system
that ensures instant disconnection in case of grid failure.
European countries maintain different regulations with
regard to anti-islanding devices and grid connection of
distributed generation in general. The common islanding
device switches off the inverter if the grid voltage or
frequency is out of range. The CS inverter is set to
local regulations by setting the country in the configurations
menu. This setting is password protected. The password is
available for installers on request.
CAUTION!
NEVER connect the CS inverter to a utility
grid other than specified, refer to section 4.5.
3.8 STABIGRID FUNCTION
SunMaster CS inverters have a high level of immunity to
voltage fluctuations caused by industrial loads. The inverter
stays online in case of minor grid fluctuations, thereby
supporting the utility network and increasing the daily
energy yield.
3.9 REACTIVE POWER
As per January 1st 2012, PV installations in Germany
capable of generating more than 3,68 kVA will be required to
provide reactive power.
Reactive power is used by the utility operators to control the
voltages in the power grid. As the share of power
generated by PV installations grows every year, it becomes
increasingly important for PV plants to support the grid similar
to conventional power plants.
The SunMaster CS “RP” version has been developed to
meet the new requirements according to the new VDE-
AR-4105 norm. The specific features required in this norm
will
automatically be enabled when the installation country
“Germany” is selected:
• Active Power Derating; which can be self-controlled by
the inverter depending on the grid frequency, or set by
the grid operator via telecommand.
• Reactive Power Provision; which can be self controlled by
the inverter, depending on different variables (grid voltage
or inverter output power)
Active grid support functions limit the capacity of active
power and therefore should be taken into account when
designing a PV system. Mastervolt provides a “SysCalc”
design tool to assist customers with system design work.
It is available for free on www.mastervoltsolar.com. Refer to
section 10.4 for more information on Reactive Power.
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EN / SunMaster CS15TL RP / CS20TL RP / CS30TL RP
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