Upgradable 18kw Telecom Modular Rectifier System with AC and DC Power Distribution
Upgradable Telecom Modular Rectifier with N + 1 Redundancy for Telecommunication
Product Overview of 18kw Modular Rectifier System
The upgradable 18kW rectifier system is developed for carrier-grade reliability and high-density power delivery and to provide stable AC and DC power distribution for telecommunications central offices, medium-to-large data centers, and a range of harsh environments. The system accepts 220V AC single-phase input and provides a tightly regulated DC output adjustable between –43V and –58V, typically set at –53.5V.
The integrated DC distribution includes both low-voltage load disconnect (LLVD) and battery low-voltage disconnect (BLVD), allowing prioritized load shedding to safeguard critical battery reserves during power outages. An advanced system controller provides comprehensive monitoring and programmable logic through analog inputs (AI), digital inputs (DI), and digital outputs (DO). Remote management is supported via RS485 and SNMP interfaces, giving operators full visibility into alarms, performance metrics, and rectifier status. A front-panel LCD also enables convenient on-site configuration and diagnostics.
AC Distribution Section
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Input: Single-phase 220VAC
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Input breaker: 1 x 125A 2P
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Input frequency: 45~65Hz (rated 50Hz/60Hz)
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Output: 220VAC, 16A
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SPD: 20/40kA, 8/20µs
DC Distribution SectionOutput voltage: -43~-58VDC (rated -53.5VDC)
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Output capacity: Maximum 18kW (6 x 3kW modules, N+1 redundancy)
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Battery breaker: 2 x 125A 1P
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Load breakers:
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LLVD: 2 x 100A/1P + 1 x 20A/1P
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BLVD: 1 x 63A/1P + 1 x 32A/1P + 3 x 16A/1P
Basic Specification of 18kw Modular Rectifier System
| Dimension | 482.5mm(W)*350mm(D)*222.5mm(H) |
| Weight | ≤21kg (without rectifiers) |
| Cooling mode | Natural cooling |
| Installation mode | Installed on 19-inch rack |
| Maintenance | Front maintenance, module grade change supported |
| Protection grade | IP20 |
Power Distribution of 5U Modular Rectifier System
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AC Distribution |
Input | single-phase 220VAC |
| Input breaker | 1*125A 2P | |
| Input frequency | 45~65Hz, rated value: 50Hz/60Hz | |
| Output | 220VAC 16A | |
| SPD | 20/40KA, 8/20us | |
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DC Distribution |
Output voltage | -43~-58VDC, rated value: -53.5VDC |
| Output capacity |
Maximum: 18kw (6*3kw, N+1 redundancy) |
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| Battery breaker | 2*125A 1P circuit breaker | |
| Load breaker |
LLVD: 2*100A/1P+1*20A/1P BLVD: 1*63A/1P+1*32A/1P+3*16A/1P |
Rectifier Module of 18kw Modular Rectifier System
| Input voltage | 85VAC～300VAC, rated 220VAC |
| Efficiency | >96% |
| Rated power | 3000W(176~300VAC) |
| Working temperature | -40℃~+75℃(fully output below 50℃) |
| Dimension | 106.5mm(W)×286mm(D)×44.5mm(H) |
| Weight | ≤2kg |
| Cooling mode | Forced cooling |
| Power factor | ≥0.99 |
| THD | ≤5% |
| DC output | –43 ~ –58VDC, rated –53.5VDC, 55A maximum |
Controller of 18kw Modular Rectifier System
| Signal input | 3 AI(2 btemp, 1 env-temp), 7 DI |
| Alarm output | 6 DO |
| Communication interface | RS485/SNMP |
| Display mode | LCD screen |
Environment of 18kw Modular Rectifier System
| Operating temperature |
-40℃ ~ +65℃ (full output below 50℃) |
| Storage temperature | -40℃~+70℃ |
| Operating humidity | 5%~95%(non-condensing) |
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Altitude |
0~3000m(If the altitude is within the range of 2000m to 3000m, the maximum operating temperature decreases by 1℃ as the altitude increases by 200m.) |
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