The HD22020-2 rectifier (EMERSON) outputs 20A current, and it is mainly applied in the large-sized substation and various power generation plants. See the following tables for the specifications of HD22020-2 rectifier.
HD22020-2 rectifier Input specifications
HD22020-2 rectifier Protection specifications
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Item
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Specifications
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Protection of the input overvoltage
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456 ± 5V, Recovery point: 430 - 450V
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Protection of the input undervoltage
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304 ± 5V, Recovery point: 310 - 330V
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Protection of the output overvoltage
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323 ± 3V, unrecoverable
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Alarm for the output undervoltage
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195V ± 3V
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Phase failure protection
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Any phase, recoverable
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Overtemperature protection
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85℃, recovery point: 80℃
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Item
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Specifications
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Remotely acquiring alarm/digital signal
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AC input overvoltage/undervoltage, Phase failure, output overcurrent, rectifier overtemperature, output overvoltage/undervoltage
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Remotely acquiring analog signal
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Output voltage, output current
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Remotely controling system state
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Rectifier on/off, boost charging/float charging, output current limit (10% - 100%)
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Remotely adjusting voltage analog signal
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Output voltage 198-284V
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Item
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Specifications
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Insulation resistance
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AC to chassis: ³ 10MW
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DC to chassis: ³ 10MW
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Dielectric strength
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AC to ground: ³2KVAC, Leakage current: £30mA, Time: 1min, No flashover.
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AC to DC: ³2KVAC, Leakage current: £30mA, Time: 1min, No flashover.
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DC to ground: ³2KVAC, Leakage current: £30mA, Time: 1min, No flashover.
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Item
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Specifications
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Ambient temperature
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-5 – 40℃
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Relative humidity
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£90% (25℃)
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Acoustic noise
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£55dB
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Weight
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29Kg
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Volume
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515´460´125mm3 (Width X Depth X Height)
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II. Notes to usage
In the electrical characteristics, HD22020-2 rectifier is the same as the convection-cooling rectifier in the usage. But, it is a fan-cooling rectifier. In particular, please pay attention to the following items:
1. Thermal design of the rectifier
The rectifier is cooled through a fan. So, in the design, keep the vent duct from being obstructed by any other objects.
2. Dust-proof design
The fan in the rectifier shall be properly protected from dusts. The dust is the major factor affecting the service life of the fan.
HD22020-2 rectifier Output specifications
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Item
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Specifications
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Output voltage range
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198 - 286V Continuously adjustable
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Output DC current
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Rated: 20A, Maximum: 21A
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Range of the output steady current
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10% - 100% rated current
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Voltage stability
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£ ±0.5%
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Current stability
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£± 1%
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Ripple coefficiency
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£± 0.05%
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Item
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Specifications
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Input voltage
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AC three-phase three-wire 304V-456V, 50Hz±10%
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Input current
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Startup surge £ 30A
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Power factors
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³ 0.90
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Efficiency
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³ 90%
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