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User Manual for HUAWEI models including: R4875G1, R4875G1 Digital Rectifier, Digital Rectifier, Rectifier
5 янв. 2025 г. — Overview. The R4875G1 is a digital rectifier with high efficiency and high power density. It supports a wide input voltage range and provides the 53.5 V DC ...
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DocumentDocumentR4875G1 Rectifier User Manual V2.3 Key Specifications Efficiency Peak efficiency: 97% 96% (230 V AC, 30%80% load) Dimensions (H x W x D) 40.8 mm x 105 mm x 269 mm Weight 2.2 kg Cooling mode Built-in fan (fan speed adjustment) IP rating IP20 Overview The R4875G1 is a digital rectifier with high efficiency and high power density. It supports a wide input voltage range and provides the 53.5 V DC or 57 V DC default output voltage. The rectifier provides comprehensive protection functions, supports soft start, and produces low noise. Multiple rectifiers can be connected in parallel. With the power monitoring technology, states of the rectifier and load are monitored in real time, and the output voltage can be adjusted. Key Features Wide input voltage range Wide operating temperature range Low total harmonic distortion (THD) Full digital control Hot swappable Supports a smart electricity meter Supports CAN bus communication Supports LED alarm display Supports voltage adjustment, current adjustment, and current equalization Disconnects at above 320 V AC RoHS compliance TUV and CE certifications, CB report Environment Specifications Item Specifications Operating temperature range 40 to +75 Storage temperature range 40 to +75 Item Relative humidity Altitude Environmental requirements Specifications 5% RH95% RH (non-condensing) 5000 m (When the altitude ranges from 2000 m to 5000 m, the operating temperature decreases by 1 for each additional 200 m.) There should be no conductive dust, corrosive gas, or explosion hazard. Dust, corrosive substances, pests, molds, and other indicators should be controlled in accordance with Class 3.1 requirements in ETSI EN 300 019-1-3 (V2.3.2 or a later version). If the module is configured in a direct ventilation cabinet or an outdoor cabinet, the IP rating of the cabinet must be greater than or equal to IP55. Electrical Specifications Item Input Specifications Input voltage range 85 V AC300 V AC Input frequency 45 Hz66 Hz Rated frequency: 50 Hz/60 Hz Rated input current 21 A Power factor THD Output Output voltage Output power Peak efficiency: Regulated voltage precision Ripple and noise Dynamic response Standby power consumption Startup time 0.97 (50%100% load) 5% (50%100% load) 42 V DC58 V DC Rated voltage: 53.5 V DC / 57 V DC 4000 W (176 V AC300 V AC) 4000 W1600 W (176 V AC85 V AC) 97%±0.2% ±0.6% x Vo 200 mVp-p (bandwidth 20 MHz) 25%50%, 50%75% load: - Overshoot: ±5% - Recovery time: 200 s (±0.6% x Vo) 10%90% load: - Overshoot:: ±5% - Recovery time: 1 ms (±1% x Vo) 5 W 3s10s Output hold-up time >10 ms Psophometrically weighted noise voltage Wide-band noise voltage 2 mV 50 mV (3.4 kHz150 kHz) 20 mV (0.15 MHz30 MHz) 1 Copyright © Huawei Digital Power Technologies Co., Ltd. 2024. All rights reserved. R4875G1 Rectifier User Manual V2.3 Other Specifications Item Specifications Protection Input overvoltage Protection threshold: > 300 V AC protection Recovery range: 290 V AC300 V AC Input undervoltage Protection threshold: < 80 V AC protection Recovery range: 80 V AC90 V AC Output overvoltage protection Protection range: 56 V DC60 V DC (can be set on the monitoring module) 1. If overvoltage occurs inside a rectifier, the rectifier will latch off. 2. If the external voltage is greater than 63 V DC for about 500 ms, the rectifier will latch off. Output current limiting protection See Figure 1. Output shortcircuit protection A long term short circuit is allowed. After the fault disappears, the rectifier is restored to a healthy state automatically. Overtemperature The rectifier protects against protection overtemperature. Safety/EMC/Lightning Protection Certification & Safety TUV and CE certifications, CB report Complies with IEC 62368-1, IEC 60950-1 standards. EMC EN 55032, EN 55024, EN 61000-3-2, EN 61000-3-3, ETSI EN 300 386, ETSI EN201 468, ETSI EN 301489, and ITU-T K.20 Lightning protection 5 kA (8/20 µs) Reliability MTBF 500,000 hours (40) Audible Noise Specifications 55 dB(A) (40) Output Feature Curves Figure 1 Output feature curve Figure 2 Output efficiency curve (230 V AC, 25) Figure 3 Output power derating curve 2 R4875G1 Rectifier User Manual V2.3 Port Description Figure 4 Rectifier edge connectors · If the red indicator is on or the green indicator is off, check the PSU first and then power it on. (Shake the PSU to check whether there is abnormal sound, check whether the PSU has an odor, whether the edge connector is clean and intact, and whether the L/N and PE pins of the edge connector are short-circuited.) Do not directly power on the PSU. Otherwise, it may arc or become faulty. Replacing a Rectifier Figure 5 Removing a rectifier Step 1: Push the locking latch leftwards. Step 2: Pull out the handle and remove the rectifier from the subrack. Figure 6 Installing a rectifier Table 1 Rectifier edge connector definitions Pin Definition Function 12 OUTPUT- Output 48 V 35 PRE-CHARGE Precharging 6 PRESENT Rectifier in-position detection 78 OUTPUT+ Output 48 V+ 9 P_ADJ Power identification signal 1 10 N_ADJ Power identification signal 2 11 AC_D2 Slot detection signal 2 12 13 14 1516 1718 AC_D1 CANL CANH PE N Slot detection signal 1 CAN low level CAN high level Protective earth AC input neutral wire 1920 L AC input live wire 21 AC-PRECHAR Input pre-charge · Only trained and qualified personnel are allowed to install or service the module. · A fuse is equipped for the input terminal L (The module does not apply to dual-live wire power scenarios). · This product should be used in an environment that meets specifications described in the user manual. · If the product is used with abnormal grid input or exposed to salt mist, dust, or water mist, the product may become faulty, and the resulting product exceptions or component damage are beyond the warranty scope. · To prevent burns, wear protective gloves and exercise caution when removing a rectifier because it is hot during operation. Step 1: Place a new rectifier in the correct slot, push the locking latch left, and pull out the handle. Step 2: Gently push the rectifier along the guide rails into the subrack, close the handle, and flip the locking latch right to secure the handle. Transportation During transportation, the product must be securely placed in a packing case. The packing case must comply with related international standards and be printed with marks such as anti-collision and moisture prevention. The packing case containing the product can be transported by any means. Protect the packing case with the product from being dampened and knocked. Storage Unused products must be stored in packing cases and placed in a dry, well-ventilated warehouse where the temperature ranges from 40°C to +75°C, the relative humidity is not greater than 80%, and no corrosive gas exists. In an indoor scenario, you are advised to power on the rectifier within seven days after unpacking. If the rectifier cannot be powered on in time, place it in an indoor environment that is dry and without corrosive gas. In an outdoor scenario, you are advised to power on the rectifier within 24 hours after unpacking. If the rectifier cannot be powered on in time, place it in an indoor environment that is dry and without corrosive gas. 3 R4875G1 Rectifier User Manual V2.3 Maintenance The equipment is powered by high-voltage electricity. Direct or indirect contact (especially through damp objects) with high-voltage electricity may result in serious injury or death. Non-standard and improper high-voltage operations may result in accidents such as fire or electric shock. Table 2 describes the states of LEDs and the causes for faults. Table 2 LED description Indicator Color Status Description Suggestion Steady on The rectifier has AC input. The status is normal. Power indicator Off The rectifier has no AC input. Green The rectifier is faulty. Blinking at 0.5 Hz The rectifier is being queried. Check whether the input voltage is normal. If the input is normal, replace the rectifier. Replace the rectifier. The status is normal. Blinking at The rectifier is loading an application The rectifier automatically recovers after the 4 Hz program. loading is finished, and no action is required. Off The rectifier is not protected, and there is no alarm. The status is normal. Alarm indicator Yellow Steady on The rectifier has generated an alarm due to ambient overtemperature. Check that the air vent is not blocked and the The rectifier has generated a shutdown ambient temperature is within the normal alarm for protection due to ambient range. overtemperature or undertemperature. The rectifier is protected against input over/undervoltage. Check the power grid voltage. The rectifier is hibernating. The status is normal. Blinking at 0.5 Hz The communication between the rectifier and the monitoring module is interrupted. Replace the rectifier or monitoring module. Off The rectifier is normal. The status is normal. Fault indicator Red The rectifier latches off due to output overvoltage, or the rectifier is not properly inserted. Steady on The rectifier has no output due to an internal fault. Remove the rectifier and then insert it after 1 minute. Replace the rectifier. The module is locked upon theft. Contact the monitoring center to unlock the module. Suggestions 1.Rectify a fault by referring to Table 2. 2.If you cannot rectify the fault according to Table 2, replace the rectifier. 3.Return the faulty rectifier to Huawei for repair. Huawei Digital Power Technologies Co., Ltd. Huawei Digital Power Antuoshan Headquarters Futian, Shenzhen 518043 People's Republic of China https://e.huawei.com 4