Power Supply Systems
Outdoor / Indoor Modular Power System
The ZTT Power Seed modular power system is a low-carbon base-station power platform built from 1U, 2U and 4U pluggable modules — rectifier, photovoltaic, remote power, DC power access and DC intelligent power distribution — managed by a centralised HEM4802 EMS. It offers 97% peak efficiency, smart MCB metering, intelligent peak-shaving (batteries discharge in peak-load hours and charge in low-load hours), green electricity via PV modules that can replace rectifier modules at zero extra cost, and full battery management. The outdoor energy cabinet integrates modular power supply (48 V 200 A), 1.5–3 kW air conditioner, reserved device space and ZTT Li-ion battery in a single 1-day installation.
Features & Characteristics
- ▪Smart metering — smart MCB in DC output unit supporting graded power measurement, statistics, reporting, LLVD/BLVD and timing.
- ▪Intelligent peak-shaving — regulates rectifier output voltage so batteries discharge in peak load hours and charge in low load hours.
- ▪Green electricity utilization — PV modules can replace rectifier modules at zero extra cost.
- ▪Battery management — monitoring system protects, tests and manages the batteries.
- ▪Fast installation and commissioning in 1 day; power distribution, battery and device cabinets built into one enclosure.
- ▪Hot / cold aisle isolation with automatic emergency ventilation.
Applications
- ▪Outdoor and indoor macro base-station power supply.
- ▪Low-carbon site retrofits combining rectifier and PV modules.
- ▪Data / edge sites requiring integrated DC power, distribution and monitoring.
Technical specifications
- Architecture
- Modular, 1U / 2U / 4U pluggable modules
- Peak system efficiency
- 97%
- Centralised management
- HEM4802 EMS — wireless monitoring extension, southbound interfaces to replace FSU
- Outdoor energy cabinet — power supply
- 48 V 200 A modular power supply
- Outdoor energy cabinet — cooling
- 1.5 – 3 kW air conditioner + hot/cold aisle isolation
- Outdoor energy cabinet — battery
- ZTT Li-ion battery (integrated)
- Installation & commissioning
- 1 day
Core modules (from ZTT Power Seed catalogue)
| Function | Type | Key specification |
|---|---|---|
| Centralized management EMS | HEM4802 | Wireless monitoring extension; intelligent modular configuration for peak-shaving and power-off; rich southbound interfaces to replace FSU |
| Rectifier module | HEP4875MH | Peak efficiency 96 % @ 4000 W; wide AC range input and automatic current sharing |
| Remote power supply module | HEP38015RS | Module efficiency ≥ 94 % @ 100 % load; remote DC intelligent power distribution module |
| 48 V DC power access module | HEP4850PR | Peak efficiency ≥ 96 % @ 3000 W; automatic current sharing |
| Photovoltaic module (low voltage PV) | HEP4850PVL | MPPT efficiency max 98 %; modular forward-and-backward design |
| DC intelligent power distribution unit | HEP48DU-04 | Intelligent power on/off; 4 × 40 A output |
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