Product detail

Three-phase Power Plant Inverter



The ZGR CTR 3300 range guarantees high performance in the worst ambient conditions

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The ZGR CTR 3300 Inverters have been specifically designed to optimise the performance and reduce the power density in medium and large PV plants.

Unmatched power density per unit of volume, making a significant reduction possible of the space required for the implementation of PV inverters in utility-scale plants.

Another very important characteristic is its automatic reactive power regulation and its communication capacity between inverters and the centralised control and monitoring systems.

The ZGR CTR 3300 inverters comply with various regulations in order to meet response requirements to voltage drops without disconnection.

They are perfect for utility PV projects (medium to large-scale) and are specifically designed to meet the most demanding specifications and operate under severe weather conditions.

  • Input Voltage Range (950-1500 Vdc)
  • Maximum Power Point Tracking (MPPT)
  • High-energy efficiency MPPT > 99%
  • Very low harmonic distortion, THD < 3%
  • Selectable power factor
  • Anti-islanding protection with automatic disconnection
  • Rapid response to a change in the set point
  • High working temperature range, from -40 ºC to +50 ºC
  • Scalable, modular and redundant by means of power modules
  • AC protection devices: • Short-circuits and overloads • Over voltages and voltage drops • Over frequency and frequency drops
  • IP65 protection rating for its most critical components
  • Operation at altitude up to 4000 m
  • Low-cost maintenance
  • Integrated DC/AC isolation chargers
  • Monitorización en remoto.
  • Remote monitoring
  • Support for voltage dips
  • Protection against: • Reverse polarisation • Short-circuit • Overvoltages• Insulation faults with output to relay.


Model ZGR CTR 3300 1500V
MPPT voltage range (25ºC / 35ºC / 50ºC) 950 V a 1500 V
MAX MPPT voltage (50ºC) 1350V
Min input voltage, min Vdc / Start-up voltage Start-up Vdc 950V/1100V
Ambient protection rating IP21 (in container IP54)
Max input voltage, max Vdc 1500 V
Max input current Max Idc 3515 A
Max short-circuit current 3400A
Number of DC inputs up to 24 protected by two poles (32 protected by one pole) for photovoltaic inputs
Max number of DC cables per input 2 x 800 kcmil, 2 x 400 mm2
DC fuse size available (per input) 200 A, 250 A, 315 A, 350 A, 400 A, 450 A, 500 A
Nominal AC power with cos phi = 1 (50ºC / 60ºC) 3300 kVA / 3100 kVA
Nominal AC power with cos phi = 0.8 (50ºC / 60ºC) 2640 kW / 2400 kW
Rated AC current Iac, max = max output current max Iac 2677 A
Max distortion coefficient <3% at rated power
AC rated voltage / AC voltage range 50 Hz / 45 Hz - 55 Hz 60 Hz / 55 Hz - 65 Hz
AC network frequency / range >2
Min short-circuit ratio at the AC terminals 1 / 0.8 inductive to 0.8 capacitive
Power factor to assigned power / adjustable lag factor 1 / 0.8 inductive to 0.0 capacitive
Max / European / Californian 98,9 % / 98,7 % / 98,6%
Connection point on the DC side DC circuit breaker
Connection point on the AC side AC circuit breaker
Protection against DC overvoltage Type II surge discharger
Protection against AC overvoltage Type II surge discharger
Earth fault / earth fault monitoring by remote control GFDI
Protection type: electronic / air duct / connection area (in accordance with IEC 60529) IP65/IP34/IP34
Dimensions (height / width / length) 2400 / 2200 / 2800
Weight 5250 Kg
Self-consumption (max. / partial load / average) < 8100 W / < 1800 W / < 2000 W
Self-consumption (on stand-by) < 370 W
Internal auxiliary power supply 8.5 kVA integrated transformer
Service temperature range: -25 ºC - 60 ºC
Noise emissions: 67,8 dB
Temperature range (on stand-by) -40 ºC - 60 ºC
Temperature range (storage) -40 ºC - 70 ºC
Max relative humidity (with/without condensation) 95 % to 100 % (2 months/year) / 0 % to 95 %
Max operating altitude (with/without derating) 2000 m / 4000 m
Air consumption 8000 m3/h
DC connection Cable terminal at each input (without fuse)
AC connection With busbar system (three busbars, one for each phase conductor)
Communication Ethernet, Modbus master, Modbus slave
ZGR String Monitoring communication Modbus TCP / Ethernet (fibre optics, MM, Cat-5)
Enclosure colour
Power supply transformer for external equipment 2.5 kVA integrated transformer
Compliance with regulations EN 61000-6-1, EN 61000-6-2, EN 61000-6-4, EN 61000-3-11, EN 61000-3- 12, EN 62109-1, EN 62109-2, IEC62103, EN 50178, FCC Part 15, AS3100 and UL IEC 62116, UE 2016/631, Arrêté du 9 juin 2020, CEI 0-16, V1:2020-12, Terna A68, G99, VDE-AR-N 4110, P.O.12.2 (NTS), P.O. 12.3, South African Grid Code, Chilean Grid Code, Ecuadorian Grid Code, Peruvian Grid Code, Thailand PEA requirements, IEC61727, UNE 206007-1, ABNT NBR 16149, ABNT NBR 16150, IEEE 1547, IEEE1547.1, GGC&CGC China, DEWA (Dubai) Grid Code, Jordan Grid Code, RETIE Colombia
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