1-1
1. Introduction
The NH-series UPS is a dedicated design for large scales of power systems applying on all
kinds of data process systems, communication systems, satellite systems, computer network
systems, medical device systems, safety and emergency systems, monitoring systems, and all
factory facilities.
The NH-series UPS employs a high frequency SPWM (Sinusoidal Pulse-Width Modulation)
inverter technology. The inverter uses an advanced IGBT module capable to reduce the MTTR
(Mean Time to Repair) and easier to be maintained, came with advantages in high efficiency, low
thermal loss, low noise, small volume, and long life expectancy. The control implements on MCU
that simplifies complicated control circuits and reduces number of components.
A LCD display with multi-language graphical interfaces makes user easier to operate with
accurate outputs. System block diagrams and statuses are also available on the interface
providing users with clearly operating modes and overall conditions. Users can also implement
long-distance monitoring by using various communication ports via computers or network
systems. As a result, direct monitoring and controls on the UPS are available for users, which
all messages on the interface are generated by MCU. If exclusive software---UPSentry is
installed, 31 sets UPS status could be monitoring at the same time via only one PC reducing
man forces and facilitating centralized control. The circuit boards of NH-Series could
Interchangeable that minimized component-inventory management. Friendly design concepts
of NT series UPS to provide optimal and durable quality power and to be the protector of the
best power related devices for customers.
Besides, in order to improve the reliability, the NH-series provides two possibilities:
Hot standby redundancy:
is achieved by dual loops design. (1+1 Redundancy)
Parallel redundancy:
No need of extra parallel control card, you can expand the total
backup capacity by simply linking another unit via a DELTA cable. A single cabinet can install
four power modules and each module has 20KVA capacity. As a result, NH-series can
backup up to 80KVA in one cabinet. By parallel expansion (two cabinets), the possible total
capacity will be 160KVA.
