RSC 300

Description

Reversible static converter 300 kW (RSC 300) is designed to charge and discharge energy storage systems. The unit ensures power scaling of several converters (300 kW, 600 kW, 900 kW, 1.2 MW) to use them as a part of charging stations, uninterruptible power supply units or industrial systems of power compensation.

The converter ensures:

• power conversion of three-phase alternating current network, voltage 400 V and frequency 50 Hz, to DC voltage 600 — 900 V to charge energy storage systems (ESS);
• conversion of DC power, voltage 650 — 900 V, from ESS to three-phase power network 400 V 50 Hz;
• synchronization to power network when connecting;
• emergency shutdown in the event of emergency, warning and alarm signaling;
• control of charge/discharge voltage and current;
• transmission of monitored parameters via MODBUS TCP.

A function of power factor correction significantly decreases harmonic distortion of input current. An isolation transformer between RSC and three-phase network 400 V 50 Hz provides additional protection and electromagnetic compatibility.

The converter’s cooling system ensures combined liquid and air cooling by built-in fans. 

Main technical specifications of RSC 300

Environmental conditions		Operating temperature	-40 … + 45 C
		Storage temperature	-40 … + 75 C
		Humidity	< 90 % w/o condensation
Mode of alternating to direct current conversion	AC input	Rated values of voltage and current	400 V; 3ph.+PE; 0…450 A
		Operating voltage range	320…440 V
		Frequency	45 … 55 Hz
		Power factor	> 99% at load more than 30 %
		Total harmonic distortion (THD)	< 5 %
	AC output	Max. power	300 kW
		Range of voltage and current values	650 V … 900 V 0...500 A
		Output voltage accuracy	<2 %
		Output current accuracy	<2 % at load 20 %
		Efficiency	> 95%
Transition time from AC2DC mode to DC2AC (AB testing)			100 ms
Mode of alternating to direct current conversion	DC input	Operating voltage range	650 V … 900 V
		Max. current	500 А
	AC output	Output voltage	320…440 V; 3ph.
		Output current	0…450 A
		Max. power	300 kW
		Frequency	45 … 55 Hz
		Total harmonic distortion (THDi)	< 5 %
		Efficiency	> 95%
Protection		Input/output voltage over limit	Automatic shutdown,  automatic restart when voltage is normal
		Overcurrent or short circuit	Automatic shutdown, restart is required to restore operation
		Overheating	Automatic shutdown, restart is required to restore operation
Data exchange			Modbus TCP / (Modbus RTU optionally)
Weight			450 kg
Outline dimensions (height*width*depth)			2000х600х755 mm