TIANJIN ESTEL ELECTRONIC SCIENCE AND TECHNOLOGY CO., LTD
TIANJIN ESTEL ELECTRONIC SCIENCE AND TECHNOLOGY CO.,LTD ESTEL(GUANGDONG) TECHNOLOGY CO., LTD We are the professoinal supplier of outdoor telecom cabinet, air conditioner, heat exchanger, and telecom
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48VDC Telecom Power Supply Rectifier 120A 6400W
Four 30A Rectifier Module Hot Pluggable Ethernet RS485
Model: GPE48120E
Introduction
Embedded DC Power provides stable -48V DC power for wireless and fixed access networks, transmission networks and enterprise network equipment. It consists of a power distribution unit, rectifiers, and a controller, etc., and can be deployed independently or embedded into other power cabinets.
Every functional unit is designed to a standard size. The systems, whose height ranges from 2U to 9U with standard 19-inch rack or cabinet installation, have a modular design to facilitate installation and expansion. The system encompasses a wide range of AC input voltage, with accurate battery management and remote management functions.
GPE48120E System Configuration
GPE48120E consists of power distribution unit, rectifier module (from 1 set, up to 5 sets) and 1 monitoring module. The configuration is optional, as following table:
| Configuration | Rectifier Module | Monitoring Module | Power Distribution | Remark |
| Standard | GPR4830A1 | GPM48R (With Ethernet Port) | AC power distribution: AC breaker(63A) and wire connection terminal; DC power distribution: 100A×2 1P LVLD: 63A×1 1P, 32A×4 1P LVBD: 20A× 2 1P | For details, please refer to the specifications of modules. |
AC power is first input AC-INPUT MCB and then feed into the rectifier module after lightning proof and filtering. AC-INPUT acts as protection to over load and short circuit to AC power. The user’s battery is connected to the DC output side through battery MCB and KM2, and the circuit breaker provides disconnection control, over-load and short-circuit protection to the battery.
Under normal conditions, every parameter of rectifier modules and power distribution unit are all under control of the monitoring module, operating according to the pre-set parameter or user’s commands. If AC mains faults, the battery will power to the system. With the battery discharge, the terminal voltage of the battery starts to descend. When battery voltage is under -47V±0.5V, the monitoring module sends DC under voltage alarm signal and when battery voltage is under -46.0V±0.5V (adjustable), the KM1cuts off non-priority loads and retains power to priority loads. If battery voltage drops to -43.0V±0.5V (adjustable), the KM2 will cut off output of priority loads and then the power system will stop working. If the external AC mains recovers, the system will normally work again. (All above monitoring data are system default values and can be reset by user).
Except for battery over-discharge protection, battery or load over-temperature protection is prohibitive under default, users can send command to activate or inactivate according to the demanding.
System Specifications
| Input | |||||
| Item | Min. | Typical | Max. | Unit | Remark |
| Input voltage range | 90 | 220 | 280 | Vac | |
| Input frequency | 45 | 50 | 65 | Hz | |
| Max. Input current | 20 | A | |||
| Power factor | 0.99 | Rated load | |||
| Input over voltage protection point | 285 | Vac | Automatically recoverable | ||
| Input over voltage recovery point | 280 | Vac | Backlash ≥5V | ||
| Input under voltage protection point | 85 | Vac | Automatically recoverable | ||
| Input under voltage recovery point | 90 | Vac | Backlash ≥5V | ||
| Input over current protection | AC input side includes MCB for protection. | ||||
| Output (Table 1) | |||||
| Item | Min. | Typical | Max. | Unit | Remark |
| Output voltage | 42 | 53.5 | 58 | Vdc | Adjustable by monitor, tested in no load |
| Output power | 6400 | W | 176～280VAC (rated power includes battery charging power plus load power) | ||
| 3200 | W | 90～175VAC input | |||
| Output over voltage protection point | 58.5 | 61.5 | Vdc | Lock up | |
| Output current limiting protection point | Output current limiting protection | ||||
| Output short circuit protection | Long-term short circuit protection, automatically recoverable | ||||
| Over temperature protection | Automatically recoverable in ambient temperature lower than 65°C | ||||
| Battery power-down protection | Battery power-down protection | ||||
| Battery polarities reversal connection protection | No damage on battery and power system | ||||
| Voltage regulation accuracy | ±1 | % | |||
| Output (Table 2) | |||||
| Item | Min. | Typical | Max. | Unit | Remark |
| Temperature coefficient | ±0.2 | ‰/°C | |||
| Current sharing unbalance | ±5 | % | Within 50～100％ load range | ||
| Start-up/shut-down overshoot range | ±5 | % | Any module is removed when operating, (the load current should be less than total output current of working rectifier modules), the system output voltage fluctuates | ||
| Dynamic response recovery time | 200 | uS | 25%～50%～25% load variation 50%～75%～50% load variation | ||
| Dynamic response overshoot | ±5 | % | Rated output voltage, rated load current | ||
| Efficiency | 90 | 91 | % | 220Vac input, rated output voltage, rated load current | |
| 83 | % | 110Vac input, rated output voltage, rated load current | |||
| Start-up time | 3 | 8 | S | pre-current limiting is fitted with start-up output between rated start up input voltage and rated output voltage established period | |
| Peak-peak noise voltage | 200 | mV | |||
Mechanical Specifications
| Mechanical specifications | |
| Dimensions (mm) | as the following diagram |
| Weight(kg) | ≤18kg (Inclusive of module) ≤10kg (Frame + Distribution, exclusive of module) |
Electrical Connection
Chassis connects with external electric through system interface board. As shown in figure below:
Power Distribution Instruction:
GPE48120E Distribution Frame