Studer Innotec C3548 COMPACT - Manual (Page 17)

STUDER INNOTEC COMPACT COMPACT COMPACT COMPACT
User manual COMPACT V2.0 E 17
Note: In the Inverter operation, The COMPACT generates a true sinusoidal and quartz stabilized
output voltage. When, however the COMPACT is supplied from a grid or a generator and the
transfer contact is active, then you have at the output AC OUT the same voltage as that at the
input. This voltage can not be modified by the COMPACT!
4.7.1 Set the transfer voltage threshold
The voltage threshold of the transfer can by adjust between 150 to 230V with the turning knobs
(23). From factory this value is 200V. Majority’s of appliances can working on this voltage. When
the Input voltages reach the settled value on turning knob, the inverter switch off and the AC
INPUT go directly on the AC OUTPUT. When the voltage INPUT is less of 20V the value set, the
transfer is stop and the OUTPUT switch back on the inverter.
Don’t use the turning knobs “TRANSFERT” (23) to adjust the AC OUTPUT voltage!
This is only it’s only a voltage threshold level to enable or disable the transfer.
4.7.2 FAST (UPS)- MODE for the Transfer Switch
The quick and break free Transfer mode is programmed with a slide switch „Transfer Delay“ OFF,
which is on the front side (cable connections side).
The aim of the COMPACT is to supply the consuming device with a break-free alternating voltage.
When the incoming voltage AC IN no longer matches values which have been set with the Turning
Knob 23, the Inverter switches on at once. The transfer is carried out in 0.02 seconds. This quick
transfer ensure a break-free function for most consuming devices . If you have an alternating
voltage back at the input AC IN, transfer system starts up again without any break, and the inverter
is stopped.
4.7.3 Delayed mode of the Transfer System
The delayed mode of the transfer system „Transfer Delay ON“ is programmed with the slide switch
on front with the cable connections. The COMPACT provides a break-free alternating voltage for
the consuming device. A quick transfer switch is not always sensible nor is it always desired. For
example, when the consuming devices are operated by a small back-up generator. An overload of
a short duration on such a generator, i.e. start of a vacuum cleaner etc., has the effect of
decreasing the voltage for a short time. As in such cases the transfer to the Inverter is not
desirable, the transfer system can be programmed with a delay. When the slide switch (Transfer
delay) is in the „On“ position, the transfer to the inverter takes place with a delay of 5 seconds. If
the voltage falls below 100Vac, the transfer takes place without delay! The transfer switching to the
Inverter takes place without any break.
4.8 The Solar charge regulator (option)
The COMPACT also has a Solar Charge Regulator built in. For charging the batteries, Solar
modules can be connected to the screw terminal SOLAR +/-. The in-built regulator is a „Shunt
regulator“ for the maximum input current of 30A for C1312 and C2324 and 20A for C3548. The
operating voltage of Solar panels to be connected must match the actual operating voltage of the
COMPACT and never exceeds the max. rated value.
Under no circumstances should any other systems such as wind-generator be connected at
the input of the Solar Charge Regulator.
The Solar Charge Regulator works automatically and is always in operation. As soon as the energy
is delivered from the Solar Charge Regulator, LED 3 “SOLAR CHARGE” is lit and the batteries are
being charged. The Solar Charge Regulator works even when the Battery Charger is functioning.
The way of working is the principally the same as that of the Battery Charger. The function is
described in the section on Battery Charger. The programming and the adjustments are carried out
in accordance with the same conditions. Check with your battery supplier which adjustments must
be carried out for your battery.
4.9 The Multifunctional Contact
In the COMPACT there is a built-in programmable power relay. The potential-free change-over
contact (NO – NC) of this power relay is connected to the screw terminal AUX CONTACT.