GR9 and GR9A

GR9 and GR9A Power Converters


GR9 is an AC/DC power converter developed by SECOM.
This device has been designed to cover a lower current range in order to provide an extremely compact and alternative solution to other SECOM products.

The converter is available in different configurations, with a current range that varies between 200Adc and 1750Adc and a supply voltage that ranges between 400Vac and 690Vac.
It is an air-cooled solution and each converter is equipped with line fuses and snubber filters.
The GR9 series three-phase converters are offered in different configurations and in different construction types.

The available configurations are the following:
- Three-phase diode rectifier
- Three-phase thyristor rectifier
- Semi-controlled three-phase rectifier
- Semi-controlled three-phase rectifier and internal braking unit.

The construction typologies:
GR9: converter with module semiconductors with current range from 200A to 1250A
GR9A: converter with disc semiconductors with current range from 500A to 1750A
GR9F: converter with module semiconductors with current range from 200A to 500A with cart option
GR9AF: converter with disc semiconductors with current range from 750A to 1750A with cart option
GR9_CHT: semi-controlled three-phase converter and internal braking unit with current range from 250A to 750A

Technical data
Ambient condition
Altitude 1000 m. a.s.l.
Climate Temperate
Min./Max. operating temperature 0 ÷ 40°C
Storage temperature -40 ÷ +55°C
Relative humidity 10 ÷ 90% (from 0 to 40°C)
Main general data
Converter type Diode rectifier
Semi-controlled DC converter
Unidirectional DC converter
Semi-controlled + CHT
Main supply voltage 400 ÷ 690V
Tolerance ± 10% power supply
Rated current 200 ÷ 1750A
Rated frequency 50 and 60 Hz; ± 2%
Insulation voltage 2.5 ÷ 4 kV
Diode/thyristor protections RC snubber; fuses
Converter protectionOvertemperature; ventilation failure
Cooling system Forced air
Installation type Fixed
Dimensions To be defined
Weight To be defined

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