AD-PVO 3000 GT

Description

The photovoltaics optimiser AD-PVO 3000 monitors the feed of solar energy at the main connection of a building. The analogue outlput (0...20 mA, 4...20 mA, 0...10 V or 2...10 V) can be parameterized freely, therefore, the electric heating rods can be controlled via a thyristor power controller. The AD-PVO 3000 regulates the heating rod output in such a way, that the feed is kept at zero. This is realised with an integral software PI regulator, which adjusts the power at the heating rod up to its maximum value of the feed-in power. With this device, the energy is optimally implemented on site and is not fed back into the public low-voltage network. This way, the PC units are optimised for personal consumption and the public network is relieved. Additionally, the AD-PVO 3000 has an error message LED and an integral error message relay, via which error messages (i.e. permanent failure of the in-feed) can be indicated or acoustically signalled outside the distribution cabinet. It is recommended to mount the AD-PVO 3000 directly after the energy-counter of the energy supply in the distribution cabinet, as measuring is to be carried as close as possible to the in-feed point. The device requires for its measuring all three external phase voltages and the neutral conductor. The AD-PVO 3000 measures the current via three external split core current transformer, which can be mounted space-saving (without separation) directly on the 3 phases after the counter. The photovoltaic optimizer receives the personal consumption energy from the measuring voltage L1.

AD-PVO 3000 GT

Application

Stepless control of heating rods with the aid of a thyristor power controller.

Specific characteristics

Supply via measuring voltages
Analogue outlput for thyristor power controller
Load regulation according to PI behaviour
Current measuring via split core current transformer
Parameterizing via PC (AD-Studio)

Business data

Order number
AD-PVO 3000 GT
Identifiers
Customs tariff number / country of origin	8543 70 90 / Deutschland

Information

Downloads
Data sheet	en-pvo3000.pdf (337 kB)
Safety instructions	ad-safety-instructions.pdf (43 kB)

Technical specifications

Current-inputs (I1...I3)
Measuring range	0 ... 33 mA AC (0 ... 100 A AC via external current transformer)
Input resistance	Ca. 10 Ohm
Voltage-inputs (L1...L3)
Measuring range	230 V AC (+/- 10 %)
Input resistance	Ca. 500 kOhm
External current-transformer
Primary current	0 ... 100 A AC
Secondary current	0 ... 33 mA AC
Transformation ratio	1:3000 (Np : Ns)
Maximum wire diameter	15 mm
Max. secundary wire length	2 m
Isolation-voltage	2,5 kV / 1 min
Dimensions (WxHxD)	32x42x46 mm
Analogue output - current
Output range	0 ... 20 mA, 4 ... 20 mA
Max. load	400 Ohm
Resolution	10 Bit
Residual ripple	Ca. 30 µAss
Analogue output - voltage
Output range	0 ... 10 V, 2 ... 10 V
Min. load	1 kOhm
Resolution	10 Bit
Residual ripple	50 mVss
Error-relay
Maximum switching load AC	250 V, 2 A
Maximum switching load DC	50 V, 2 A
Contact construction	Changeover contact
Switching operations mechanical	10000000
At 230V/2A AC, cos(phi)=1	600000
At 230V/2A AC, cos(phi)=0,4	200000
At 24V/2A DC	200000
Supply
Voltage range AC	230 V AC (+/- 10 %), 50/60 Hz
Nominal voltage AC	230 V AC
Power consumption	Max. 3,8 VA
Transfer behavior - in reference to the current value
Basic accuracy	< 1 % (class 1)
Temperature influence	80 ppm/K
Response time	< 2 s
Housing
Dimensions (WxHxD)	71x90x58 mm
Type of protection	IP 20
Connection method	Screw clamp
Terminals, wire cross section	2,5 mm² flex wire / 4 mm² one wire
Bolting torque terminals	0,6 Nm
Skinning length	6 mm
Weight	~ 175 g + 3x 75 g (current-transf.)
Manner of fastening	35 mm DIN rail 35mm
Environmental conditions
Ambient temperature	-10 ... 50 °C
Storage and transport	-10 ... 70 °C (no condensation)
EMC
Product family standard	EN 61326-1 ¹⁾
Emitted interference	EN 55011, CISPR11 Cl. B, Gr. 1
Electrical safety requirements
Product family standard	EN 61010-1
Overvoltage category	II
Pollution degree	2
Safety measurement	EN 61010-2-030
Measurement category	CAT III
Galvanic isolation, test voltages
Grid side to error relay	4 kV, 50 Hz (1 min.)
Grid side to the pc-interface	4 kV, 50 Hz (1 min.)
Grid side to control elements	4 kV, 50 Hz (1 min.)
Grid side to analoge output	3 kV, 50 Hz (1 min.)
Protection circuits
Input	Electrical surge protection
Analogue output	Electrical surge protection
Power supply	Protection against over-temperature, over-voltage and over-current

¹⁾ During checking, slight signal deviations are possible.
EMC-appropriate assembly
When assembling the AD-PVO 3000, including a thyristor power controller, please observe the regional and/or country specific regulations of the network operator.
When operating great loads with leading phase-angle or trailing phase-angle, considerable network reaction can be expected to the current intake, which is not sinusoidal.
The regulations for operation of heat generators with leading phase-angle or trailing phase-angle depend on the network operator. In case of doubt please contact the network operator.
The erector of the unit must, if necessary, reduce the electromagnetic emission with suitable chokes or suppressor filters.
Chokes reduce the current-dependent network reactions and effect an improvement of the power factor. The current harmonics content is reduced and the network quality is improved.
Network filter serve mainly the protection from high-frequency disturbance variables, which are emitted, conductor bound, via the network cable or through the air.
Shielding measures may be necessary to reduce the emission. The conductor between thyristor and load should be shielded.
The shield must be earthed with low impedance or over a large surface, however, it must not replace the PE conductor!

Block and wiring diagram

AD-PVO 3000 GT

Dimensions

AD-PVO 3000 GT

Circuit examples

AD-PVO 3000 GT

CAD / CAE Daten

CAD model is not yet available for this product.

The CAD product overview can be found at: adamczewski.partcommunity.com

Operation

Operation LED
The green operation LED indicates the operating status of the device. - off: the device has no operating voltage - permanently on: the device is in normal operation - flashes with 5 Hz: the manual load connection is active.
Error LED
The red error LED indicates, whether an error is present. - off: no error
- on: error present
Key: manual load
The key "Manual load" serves the manual 100% activation of the load. The load is activated and deactivated through a long pressure on the key (3s).
Key: Quit
The key "Quit" is provided for quitting of an error message. If an error is present, the red error message LED lights up and the error message relay engages. An acoustic indicator can be connected at the error message relay. When the key "Quit" is activated, the relay releases again. The red error LED, however, is lit until the error is eliminated. With long key depression see "Automatic load calibration".

Software and parameterizing
The device can be parameterized and read out via the parameterizing software AD-Studio and at the available USB programming adapter AD-VarioPass3. The appropriate USB driver for the USB programming adapter AD-VarioPass3 is supplied with the software AD-Studio. With this software, measuring values can also be read out or logged. For connection to the PC, the blind plug must be removed from the parameterizing interface (AD-PC) i.e. with a small screwdriver. Please insert the screwdriver into the slot provided for this and lever the blind plug out.

The following parameter can be edited:

- Filter: Analogue value filter for the input measured quantity. Serves the suppression of rapid measuring value alterations.
- Current transformer type: Specifies the connected current transformers type (distinguishing primary current).
- Power of the load: Here must be stated, which power intake the connected load has at the load relay. This specification is required for internal calculations.
- Type of output signal: Sets the type of signal at the analogue output (0...20 mA, 4...20 mA, 0...10 V, 2...10 V).
- Error time in-feed: Sets the time after which the alarm is released, if no in-feed has occurred during this time.
- Unit size: Here the size of the PV unit can be entered in kWp. Is only required with 70% message. - Function Error message relay: sets the function of the error message relay. You can choose between two types of functions: "In-feed error" and "70% message". The standard function "In-feed error" activates an error message after the time set in the parameter "error time in-feed". The function "70% message" activates a message, if more than 70% of the installed unit size in KWp is fed in, even though the load is switched on at the PVO. The parameter “unit size" is evaluated.
- Proportional constant: Sets the proportional constant of the PI regulators. Attention, influences the regulating behaviour of the device.
- Integral constant: Sets the integral constant of the PI regulator. Attention, influences the regulating behaviour of the device.
- Scanning time: Sets the scanning time of the PI regulator. Attention, influences the regulating behaviour of the device.

Automatic Load calibration
For the commissioning of the AD-PVO 3000, the parameter are normally set appropriately via the parameterizing software AD-Studio and the available USB programming adapter AD-VarioPass3. However, an "Automatic load calibration" can also be started directly at the device. In this operating mode, the power of the consumer connected to the thyristor power controller is automatically calibrated and a PC is not required. This load calibration is started with a long key depression of the "Quit key" (3s). As long as the calibration is running, both LEDs flash alternately. This process can last for several minutes. If the calibration is cancelled with a short depression of the "Quit key", the values in the parameter are reset to the last status. After successful completion of the "Automatic load calibration", the device takes over the measuring data and returns to normal operation. If the load calibration is not completed after approx. 15 minutes, then there are too strong load deviations in the network. With too strong load deviations, the device has difficulties in calibrating itself. It is recommended to separate these loads briefly from the network during the calibration time, or to parameterize the device with a PC.

Tested thyristor power controller
In principle, any desired thyristor can be connected to the analog output of the AD PVO 3000. However, the thyristor has to correspond to the technical specifications of the analog output. Below are two thyristor listed that have been tested in the house Adamczewski in combination with the AD-3000 PVO.

- Single phase applications:
Type: SIL465000
Manufacturer: CELDUC
Power supply: 160 ... 450 VAC
Analog input: 0 ... 10 V
Load: max. 22A (AC-51) - phase angle
Mounting: DIN rail (heat sink integrated)

- Three-phase applications:
Typ: RGC3 P 60 I 30 E A P
Manufacturer: CARLO GAVAZZI
Power supply: 90 ... 250 VAC
Analog input: 0/4 ... 20 mA
Load: max. 37A (AC-51) - phase angle
Mounting: DIN rail (heat sink integrated)

Noise free stepless heating element
The heater AC Elwa has a 0 ... 10 V-interface via which it can be controlled. Thus, it is compatible with the AD-PVO 3000. It requires no additional thyristor. The technology for a stepless control is built into the heating element. The heater does not produce disturbances in the power network. It can therefore be used without the consent of the energy supplier with the AD-PVO 3000.
Typ: AC-Elwa
Manufacturer: my-PV GmbH
Power supply: 230 VAC
Analog input: 0 ... 10 V
Heating power: max. 3 kW
Mounting: 1,5"-screwing