2. Operation. Wir regeln das. Seite 2

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1 Technical Data Low voltage regulation system LVRSys - Outdoor Power range: 7.5 kva up to 630 kva Regulation: single- or three phase Regulation range: 6 %... ±20 % Overall efficiency: 99.4 % to 99,8 % Noise level: 25 to 37 db(a) Phase independent regulation No grid interference 1. Application The low voltage regulation system LVRSys represents a cost-effective alternative to grid expansion. The economic use is recommended in all low voltage grids, where short-circuit power is sufficient, but have voltage maintenance problems. Voltage maintenance problems can occur locally (in single lines) or at the level of the entire low voltage grid. LVRSys can be used with flexibility as line regulator or as direct regulator on the local grid. ONT 110kV 20kV 0.4kV KV LVRSys Last PV Einspeisung ohne LVRSys Einspeiseprofil +10% +5% 0% -5% mit LVRSys -10% ohne LVRSys Lastprofil Distribution network voltage profile with and without LVRSys Seite 1

2 Wir regeln das. 2. Operation The principle of the LVRSys control is of a linear regulator. By coupling and uncoupling two transformers with selected transfer ratios, it is possible to regulate the output voltage in 9 steps. The regulation range can be selected from ±6 % (phase spacing 1.5 %) to ±10 % (phase spacing 2.5 %). The transformers are controlled using thyristors. These solid state electronic components are characterised by robustness, easy maintenance and short-circuit resistance. The stages of the transformers are determined by setting the switching of the thyristors in the following fashion. The thyristors once switched stay in that state for as long that percentage voltage increase is demanded. Stufe Trafo 1,5% Trafo 4,5% +6 % +1,5 % +4,5 % +4,5 % 0 % +4,5 % +3 % -1,5 % +4,5 % +1,5 % +1,5 % 0 % 0 % 0 % 0 % -1,5 % -1,5 % 0 % -3 % +1,5 % -4,5 % -4,5 %/ 0 % -4,5 % -6 % -1,5 % -4,5 % Generating voltage steps using of thyristors for a System ensuring ±6 % voltage step-up/down The control signals for the thyristors are generated by driver circuits which switch the thyristors intelligently. Taking into consideration the magnetic flow in the transformers, these can be switched to generate smooth current without voltage dips or over-voltages. 4,5% Trafo 1,5% Trafo The sinusoid of a 50Hz Vac wave during switching: Input voltage blue; Output voltage red geregelte Ausgangsspannung ungeregelte Eingangsspannung Ansteuerung Example of 3 % voltage reduction Seite 2

3 3. LVRSys possible application locations LVRSys can be used in various ways. Applications range from "regulation street distribution boxes" up to regulation entire local grids. Distribution transformer LVRSys LVRSys as local grid regulator Low- voltage distribution Distribution transformer Low- voltage distribution LVRSys as regulator of an outgoing circuit LVRSys LVRSys Distribution transformer Power distribution cabinet Distribution transformer Low- voltage distribution LVRSys as line regulator of several lines LVRSys as line regulator LVRSys Pole- distribution Distribution transformer Low- voltage distribution LVRSys as pole- mount system 3- phase Balancing of the three phase voltage LVRSys Pole- mount 3-phase Distribution transformer Low- voltage distribution LVRSys as pole- mount system 1- phase LVRSys Pole- mount 1-phase The "balancing" of the three phase voltage additionally improves grid quality, as shown by the following power consumption of a line regulator. Unregulated input voltage LVRSys Regulated output voltage LVRSys Seite 3

4 Wir regeln das. 4. Technical Data Operating temperature -40 C to 45 C Maximum permitted air temperature in the switch cabinet Altitude of the installation (NN) 70 C < 2000 m Safety class IP 54 electronic part IP 66 Rated voltage 400 V/230 V ±20 % (L-L/LE) Rated current 3-phase 1-phase Rated frequency Rated impulse voltage 32 A (22 kva system) 63 A (44 kva system) 100 A (70 kva system) 125 A (87 kva system) 160 A (110 kva system) 200 A (144 kva system) 250 A (175 kva system) 355 A (250 kva system) 577 A (400 kva system) 909 A (630 kva system) 50 Hz 6 kv Short time current resistance (1 s) 5 ka (up to 44 kva system) Rated conditional short-circuit current Rated conditional short-circuit current with fuses High rated peak withstand currents protected 15 ka (70 kva up to 630 kva system) 20 ka (up to 44 kva system) 50 ka (70 kva up to 630 kva system) 3 ka (22 kva system) 5 ka (44 kva system) 10 ka (70 kva system) 12 ka (87 kva system) 14 ka (110 kva system) 16 ka (144 kva system) 20k A (175 kva system) 30 ka (250 kva system) 50 ka (400 kva system) 50 ka (630 kva system) 20 ka (up to 44 kva system) Efficiency 99.4 % % 50 ka (70 up to 630 kva system) 32 A (7,5 kva system) 63 A (15 kva system) 100 A (25 kva system) 125 A (30 kva System) 160 A (40 kva system) 200 A (50 kva system) 250 A (60 kva system) 355 A (85 kva system) 577 A (135 kva system) 909 A (210 kva system) Seite 4

5 Regulation ranges Step number/distance 6 % Step number/distance 7 % Step number/distance 8 % Step number/distance 10 % Step number/distance 16 % Step number/distance 24 % Switch cabinet dimensions W/D/H Switch cabinet weight Ground base W/D/H dimensions Ground base weight Dimensions W/D/H of transformer block 3-phase ±6 % of ±7 % of ±8 % of ±10 % of ±16 % of Up to ±24 % of 9 / 1.5 % 9 / 1.75 % 9 / 2 % 9 / 2.5 % 9/ 4 % 9 / 6 % 80 cm/40 cm/135 cm (22 kva - 44 kva System) 120 cm/40 cm/135 cm (87 kva kva System) 140 cm/40 cm/135 cm (400 kva System 6 %) 140 cm/50 cm/145 cm (400 kva System 10 %) 160 cm/50 cm/155 cm (630 kva System) 100 kg (22 kva - 44 kva System) 150 kg (87 kva kva System) 200 kg (400 kva System 6 %) 220 kg (400 kva System 10 %) 300 kg (630 kva System) 80 cm/40 cm/100 cm (22 kva - 44 kva System) 120 cm/40 cm/100 cm (87 kva kva System) 140 cm/40 cm/100 cm (400 kva System 6 %) 140 cm/50 cm/100 cm (400 kva System 10 %) 160 cm/50 cm/100 cm (630 kva System) 200 kg (22 kva - 44 kva System) 260 kg (87 kva kva System) 280 kg (400 kva System 6 %) 290 kg (400 kva System 10 %) 320 kg (630 kva System) 40 cm/28cm/100cm (22 kva System) 40 cm/28cm/100cm (44 kva System) 40 cm/28cm/100cm (70 kva System) 40 cm/28cm/100cm (87 kva System) 50 cm/28cm/100cm (110 kva System) 50 cm/28cm/100cm (144 kva System) 50 cm/28cm/100cm (175 kva System) 50 cm/28cm/100cm (250 kva System) 70 cm/35cm/100cm (400 kva System) 70 cm/35cm/100cm (630 kva System) Seite 5

6 Wir regeln das. Weight of transformer block 3- phase 60 kg ( 22 kva System) 100 kg( 44 kva System) 120 kg ( 70 kva System) 150 kg ( 87 kva System) 150 kg (110 kva System) 170 kg (144 kva System) 200 kg (175 kva System) 250 kg (250 kva System) 450 kg (400 kva System) 550 kg (630 kva System) Max. power consumption of secondary electronics 200 ma (230 V) Cooling - passive (convection via switch cabinet housing) - active (redundant ventilation system) (depending on the application conditions) Short-circuit impedance approx. 0.3% Maximum phasing duration 30 ms Noise emissions < 30 db(a) EMC stability DIN EN EMC interference emission DIN EN Assembly instructions DIN EN /5 Low voltage directive 2014/35/EU Seite 6

7 5. Installation 5.1 Systems up to 70 kva Pos. Designation 1 Cabinet LVRSys 2 Concrete base 3 Transformer block 4 Cabinet electronic 5 Connection clamps up to 70 mm² 6 PEN clamp 7 C- cable catch rail 8 Input clamps local grid 9 Input LVRSys 10 Bypass 11 Output LVRSys 12 Output clamps local grid Installation- diagram LVRSys up to 44 kva Seite 7

8 Wir regeln das. 5.2 Systems 70 kva up to 250 kva Pos. Designation 1 Cabinet LVRSys 2 Concrete base 3 Transformer block 4 Cabinet electronic 5 Connection NH switchdisconnector up to 240 mm² (NH2) 6 PEN clamp 7 C- cable catch rail 8 Input local grid 9 Input LVRSys 10 Bypass 11 Output LVRSys 12 Output local grid Installation- diagram LVRSys 70 kva up to 250 kva

9 5.3 Systems 400 kva up to 630 kva Pos. Designation 1 Cabinet LVRSys 2 Concrete base 3 Transformer block 4 Cabinet electronic 5 Connection NH switchdisconnector up to 240 mm² (NH3) 6 PEN clamp 7 C- cable catch rail 8 Input local grid 9 Input LVRSys 10 Bypass 11 Output LVRSys 12 Output local grid Installation- diagram LVRSys 400 kva up to 630 kva Seite 9

10 Wir regeln das. 5.4 Pole Mount Systems (3-phase) 22 kva up to 250 kva 2 3 Pos. Designation 1 Cabinet LVRSys 2 Input local grid 3 Output local grid 4 Pole 5 Indicator lights 6 Mounting platform Installation- diagram LVRSys Pole mount 22 kva up to 250 kva 5.5 Pole Mount Systems (1-phase) form 7.5 kva to 85 kva Pos. Designation 1 Cabinet LVRSys 2 Connection cabinet LVRSys 3 Input and output local grid 4 System switch (Hotstick) 5 Indicator lights 6 Connection cable 7 Pole Installation- diagram LVRSys Pole mount (1 phase) 7.5 kva up to 85 kva

11 6. Communication The regulator has a Modbus-Interface (RS 232, RS 485, TCP/IP) which can be used for the communication with a higher-level control system. All parameters and measurements of the regulator can be changed and read via Modbus. Furthermore it is possible to operate the system from the distance (Hand mode/automatic mode/step change). In the immediate future an OPC-UA built-in server will be provided. Control unit & display LVRSys with communication interfaces 7. Operation 7.1 Regulation parameters Reference value (voltage value, 3-phase) Tolerance band + (upper limit value of the tolerance area) Tolerance band - (lower limit value of the tolerance area) Time ratio (selection of time characteristics) Delay (delay of characteristics) Synchronous phasing (phases are stepped synchronously) Grid impedance (current values are included in regulation) 7.2 Drag indicator function The "drag pointer" displays the 15-minutes average values for the following measurement parameters: Maximum voltage values Ph1-Ph3 Maximum current values Ph1-Ph3 Maximum output values Ph1-Ph3 Minimum/maximum temperatures T1 output level aluminium plate T2 control housing T3 switch cabinet air Controller active Step Voltage Controller inactive Controller inactive Step Tolerance band + Setpoint Tolerance band - Tolerance area Drag indicator function permits also a display of temperatures Seite 11

12 Wir regeln das. 7.4 Grid impedance Temperaturanzeige 7.3 Update & CSV file output The measurement data (CSV) and the log book can be retrieved with the help of an USB stick. One can also update the firmware with the help of an USB stick. The regulator measures the output voltage and phases it in case of over-/under-voltage in the tolerance bands. When an additional setup of the "grid impedance" takes place, a new voltage regulation value is created. By measuring the grid current versus the set grid impedance one can calculate the voltage value in "grid branch" exactly. The regulation can be therefore optimised without additional communication devices. For parameterization of the grid impedance, the controller calculates permanently the regulating voltage value. At load the calculated voltage value is reduced. At regeneration the calculated voltage value is increased. Example of control with grid impedance: ONT 0.4kV KV LVRSys 250 m PV Einspeisung Example for a weak grid branch which 500 m Cable length between LVRSys and PV-Supply CSV- file output Cable Cable length Cable resistance Cable data NA2X2Y 4 x 150 mm² 250 m 0,25 km x 0,206 Ω/km = 0,05 Ω In the example the calculated voltage value of the controller at a feeding power of photovoltaic of 100A reduces the voltage by -100 A x 0,05 Ω = -5 V. This regulates the desired voltage of the end of the cable. Evaluation logbook via MS Excel Setting up the grid impedance

13 8. Order details Characteristic Code Low Voltage Regulation 3-phase Low Voltage Regulation System 630 kva 3-phase LVRSys 630-3/230 Low Voltage Regulation System 400 kva 3-phase LVRSys 400-3/230 Low Voltage Regulation System 250 kva 3-phase LVRSys 250-3/230 Low Voltage Regulation System 175 kva 3-phase LVRSys 175-3/230 Low Voltage Regulation System 144 kva 3-phase LVRSys 144-3/230 Low Voltage Regulation System 110 kva 3-phase LVRSys 110-3/230 Low Voltage Regulation System 87 kva 3-phase LVRSys 87-3/230 Low Voltage Regulation System 70 kva 3-phase LVRSys 70-3/230 Low Voltage Regulation System 44 kva 3-phase LVRSys 44-3/230 Low Voltage Regulation System 22 kva 3-phase LVRSys 22-3/230 Low Voltage Regulation 1-phase Low Voltage Regulation System 210 kva 1-phase LVRSys 210-1/230 Low Voltage Regulation System 135 kva 1-phase LVRSys 135-1/230 Low Voltage Regulation System 85 kva 1-phase LVRSys 85-1/230 Low Voltage Regulation System 60 kva 1-phase LVRSys 60-1/230 Low Voltage Regulation System 50 kva 1-phase LVRSys 50-1/230 Low Voltage Regulation System 40 kva 1-phase LVRSys 40-1/230 Low Voltage Regulation System 30 kva 1-phase LVRSys 30-1/230 Low Voltage Regulation System 25 kva 1-phase LVRSys 25-1/230 Low Voltage Regulation System 15 kva 1-phase LVRSys 15-1/230 Low Voltage Regulation System 7,5 kva 1-phase LVRSys 7.5-1/230 Design Indoor fixed cabinet B1 Outdoor fixed cabinet B2 Outdoor Pole Mount (up to 250 kva) B3 Other choices on request B4 Base Without concrete base C0 Concrete base (Art. No ) C1 Other choices on request C9 Connection Flat terminal M12 25 mm² mm² (Systems from 70 kva) D1 Steel-frame clamp 25 mm² mm² (Systems from 70 kva) D2 Box terminal 1,5 mm² - 35 mm² (Systems up to 70 kva) D3 Direct connection isolator (included in the option B3) D4 Seite 13

14 Wir regeln das. Characteristic Code Control speed < 1 s (Standard) E1 < 30 ms E2 Regulation range/steps 3-phase ± 6% in 1.5% steps S1 ± 7% in 1.75% steps (22 kva kva) S24 ± 7% in 1.75% steps (144 kva kva) S21 ± 8% in 2% steps (22 kva kva) S22 ± 8% in 2% steps (144 kva kva) S23 ± 8% in 2% steps (400 kva kva) S31 ± 10% in 2.5% steps (22 kva kva) S32 ± 10% in 2.5% steps (144 kva kva) S33 ± 10% in 2.5% steps (400 kva kva) S4 ± 16% in 4% steps (22 kva kva) S5 ± 24% in 6% steps (22 kva kva) S9 Regulation range/steps 1-phase ± 6% in 1.5% steps (Standard) S1 ± 7% in 1.75% steps (7,5 kva - 40 kva) S11 ± 7% in 1.75% steps (50 kva - 85 kva) S12 ± 8% in 2% steps (7,5 kva - 40 kva) S21 ± 8% in 2% steps (50 kva - 85 kva) S22 ± 8% in 2% steps (135 kva kva) S23 ± 10% in 2.5% steps (7,5 kva - 40 kva) S31 ± 10% in 2.5% steps (50 kva - 85 kva) S32 ± 10% in 2.5% steps (135 kva kva) S33 ± 16% in 4% steps (7,5 kva - 40 kva) S4 ± 24% in 6% steps (7,5 kva - 40 kva) S5 Other choices on request S9 Communication Modbus TCP/IP L1 IEC L2 Other choices on request L9 Current measurement/power measurement Without current measurement M0 Current measurement 3x (Output) M1 Current measurement 4x (Output) M2 Current measurement 3x (Input) M3 Current measurement 4x (Input) M4 Current measurement for selected PQI DA-smart M5 Other choices on request M9

15 Characteristic Code Integrated Power Quality measurements Without PQI DA-smart I0 PQI DA-smart Output (select also M5) I1 PQI DA-smart Input (select also M5) I2 2x PQI DA-smart (select also M5) I3 Integrated cable distribution 1 input and 1 output (Standard) J0 1 unregulated additional input (Cabinet widened by 20cm) J1 2 unregulated additional inputs (Cabinet widened by 20cm) J2 3 unregulated additional inputs (Cabinet widened by 40cm) J3 1 unregulated additional output (Cabinet widened by 20cm) J4 2 unregulated additional outputs (Cabinet widened by 20cm) J5 3 unregulated additional outputs (Cabinet widened by 40cm) J6 Other combination of inputs and outputs on request J9 Service-Socket Without socket K0 Socket + GFCI (CEE 7/4) Schuko 16 A (Germany) K1 Socket + GFCI (SEV 1011) Typ A (Switzerland) K2 Other choices on request K9 Locking System Profile cylinder DIN N1 Profile cylinder pivot lever Ø 22 N2 Other choices on request N9 External installations Without external installations P0 Communication device P1 Other choices on request P2 Seite 15

16 Wir regeln das. A. Eberle GmbH & Co. KG Frankenstraße 160 D Nürnberg Tel.: +49 (0) 911 / Fax: +49 (0) 911 / info@a-eberle.de Ausgabe vom: Copyright 2016 von A. Eberle GmbH & Co. KG Änderungen vorbehalten.