Single Module
NERM Series

10 KVA to 400 KVA (For 220/380 VAC Power systems)
6 KVA to 240 KVA (For 120/208 VAC Power systems)

Three Phase Modular / Redundant True-On-Line UPS System 6-400 KVA

Nova Electric’s NERM-Series True Online UPS provides a modular backup solution for data centers, computer systems, and any other critical equipment which demands dependable backup power. The NERM’s state of the art design combines the latest IGBT three-level technology along with modern DSP Control for maximum reliability, low THD-i, and extremely high system efficiency. Modules can be stacked from 6 KVA to 400 KVA, offering hot-swappable flexibility with the highest quality, at a price you can afford. Power expansion is very simple to achieve by adding more individual power modules to the system, which can reach 200 KVA power in a single rack. Two racks can be paralleled for 400 KVA power!

NERM-10_2

6 Module Cabinet

6 Module Cabinet

Modular Hot Swap Design
Each UPS power module is designed to be hot swappable for hassle -free power expansion and system maintenance. Each module is controlled independently, thus avoiding a single point failure risk. If any individual module fails or disconnects, the system continues to operate and supply power without interruption, ensuring a high level of reliability
and protection.

Easy Operation and Installation
The modular flexibility of the NERM-Series UPS dramatically reduces technician time spent on installation and maintenance. A large touchscreen LCD panel ensures that users can quickly and easily access
vital information.

Intelligent Battery Management
Each UPS module contains a powerful 3.2 KW battery charger, and up to ten modules can be paralleled for 32 KW maximum battery charging capacity. These chargers are DSP controlled with intelligent digital
algorithms designed specifically to prolong battery life.

The Smart Protection System
Each individual power module and the overall system are protected by both hardware and software. Protection functions include abnormal current, incorrect input or output voltage, over temperature, and short circuit. The combination of these hardware and software protection functions results in extremely high reliability, with a very user friendly interface.

Standard Features

  • • High input power factor (>0.99) with low input THD-i (<3%).
  • • Low adaptability for linear and nonlinear load.
  • • Low audible noise system design (<55db).
  • • Double DSP controller for each individual power module.
  • • Digital control for all major UPS subassemblies including rectifier,
  • inverter, battery charger, and battery discharge.
  • • IGBT modules rather than discrete semiconductor components
  • are used in the power module for high reliability.
  • • Conformal coated boards for humidity resistance.
  • • Built in PDU circuit breakers for cabinet AC input, AC output and maintenance bypass.
  • • Digital paralleling technology with very low circulating current between power modules.
  • • Front access cabinet with both top and bottom cable connections.
  • • Each individual module is configured with an independent DSP controller to avoid single point of failure risk.
  • • Generator-friendly interface.
  • • RS232, 485, and dry contacts all standard.

High Reliability Design
The low-loss integrated three-level IGBTs used in each NERM-Series power module result in higher efficiency and enhaced reliability due to lower heatsink temperatures.

Partial Option Selection

  • • VRLA batteries in modular drawers.
  • • Battery circuit breaker.
  • • SNMP communication card.
  • • Battery temperature compensation module.
  • • User replaceable air filter for dusty environments.
  • • Parallel operation kit.
  • • Input isolation transformer.
  • • Alternate remote shutdown / EPO configurations.
  • • Battery cold start module (Allows the UPS to start on battery alone).

Module Features
Hot swap building block 12 KVA and 6 KVA modules @ 120/208 VAC and 20 KVA and 10 KVA modules @ 220/380 VAC

  • • Independent control.
  • • Designed for parallel operation with active current sharing.
  • • Designed for (N+1) redundancy.
  • • Capable of hot swap.
  • • Automatic mechanical disconnection in case of failure or maintenance.

NERM-IGBT



Specifications & Model Selection

220/380 VAC Thru 277/480 VAC Models
Specification
Capacity 10-200 KVA (to 400 KVA with 2 racks)
Main Input
Input voltage (with neutral) 220/380, 230/400, 240/415 or 277/480 VAC (with optional transformer)
Input frequency 50/60 Hz
Input Power factor >0.99
Input current THD (Total Harmonic Distortion) <3%
Input voltage window -20% to +20% at full load; -40% to +20% at 70% load or less
Frequency window 40-70 HZ Programmable
Battery
Battery voltage ±240 VDC (Nominal)
Charger power 20%*Power
Charger voltage precision 1%
Bypass
Bypass voltage 220/380, 230/400, 240/415 or 277/480 VAC (with optional transformer)
Bypass voltage window -20%~ +15%, full load, settable
Bypass overload capability < 125%, long term operation (2 hours maximum)
125%<load<130%, for more than 1 hour
130%<load<150%, for more than 6 minutes
>1000%, for more than 100 ms
Output
Output voltage 220/380, 230/400, 240/415 or 277/480 VAC (with optional transformer)
Voltage precision ±0.5% (balanced load), ±1% (unbalanced load)
Voltage THD (Total Harmonic Distortion) THD<1.5% (linear load), THD<5% (nonlinear load)
Power factor 0.8
Phase tolerance 120°±0.5°(balance and unbalance load)
Crest factor 3:1
Overload capability Up to 105%, continuous operation
Up to 110%, transfer to bypass after 1hour
Up to 125%, transfer to bypass after 10 minutes
Up to 150%, transfer to bypass after 1 minute
>150%, transfer to bypass after 200 ms
System
System efficiency Normal mode: 95%
ECO mode: 99%
Battery mode efficiency 95%
Display LCD+LED, Touch screen and keyboard
IP class IP20
Interface (Communication Ports) RS232, RS485, Dry Contacts, SNMP Card, EPO, Generator Interface
Installation/Connection Top or bottom cable connection
Operation temperature 0-40°C (to 50°C with 15% derating)
Storage temperature (Electronics) -25°C to +70°C (Battery may be different)
Relative humidity 0-95% (non-condensing)
Noise (dB) <55dB
Weight (kg/Lb)
Note: Cabinets do not need to be fully populated
6-module Cabinet NERM060/10,RM090/15,NERM120/20 150kg/330Lb
10-module Cabinet NERM100/10,RM150/15,NERM200/20 180kg/396Lb
NEPM10 10KVA 20kg/44Lb
NEPM20 20KVA 22kg/49Lb
Dimension (W*D*H)(mm/inch) 6-module Cabinet 600*900*1600 / 23.6*35.5*63
10-module Cabinet 600*900*2000 / 23.6*35.5*78.8
Module (10/20 KVA) 440*600*134 / 17.3*23.6*5.27
120/208 VAC Models
Specification
Capacity 6-120 KVA (to 240 KVA with 2 racks)
Main Input
Input voltage (with neutral) 120/208 VAC
Input frequency 50/60 Hz
Input Power factor >0.99
Input current THD (Total Harmonic Distortion) <3%
Input voltage window -20% to +20% at full load, -40% to +20% at 70% load or less
Frequency window 40-70 HZ Programmable
Battery
Battery voltage ±120 VDC (Nominal)
Charger power 20%*Power
Charger voltage precision 1%
Bypass
Bypass voltage 120/208 VAC
Bypass voltage window -20%~ +15%, full load, settable
Bypass overload capability < 125%, long term operation (2 hours maximum)
125%<load<130%, for more than 1 hour
130%<load<150%, for more than 6 minutes
>1000%, for more than 100 ms
Output
Output voltage 120/208 VAC
Voltage precision ±1% (balance load), ±2% (unbalance load)
Voltage THD (Total Harmonic Distortion) THD<2% (linear load), THD<5% (nonlinear load)
Power factor 0.8
Phase tolerance 120°±0.5°(balance and unbalance load)
Crest factor 3:1
Overload capability Up to 105%, continuous operation
Up to 110%, transfer to bypass after 1hour
Up to 125%, transfer to bypass after 10 minutes
Up to 150%, transfer to bypass after 1 minute
>150%, transfer to bypass after 200 ms
System
System efficiency Normal mode: 90%
ECO mode: 99%
Battery mode efficiency 90%
Display LCD+LED, Touch screen and keyboard
IP class IP20
Interface (Communication Ports) RS232, RS485, Dry Contacts, SNMP Card, EPO, Generator Interface
Installation/Connection Top or bottom cable connection
Operation temperature (Electronics) 0-40°C (to 50°C with 15% derating)
Storage temperature -25°C to +70°C (Battery may be different)
Relative humidity 0-95% (non-condensing)
Noise (dB) <55dB
Weight (kg/Lb)
Note: Cabinets do not need to be fully populated
6-module Cabinet NERM036/06L, NERM072/12L 150kg/330Lb
10-module Cabinet NERM072/06L, NERM120/12L 180kg/390Lb
NEPM06L 6KVA 20kg/44Lb
NEPM12L 12KVA 22kg/49Lb
Dimension (W*D*H)(mm/inch) 6-module Cabinet 600*900*1600 / 23.6*35.5*63
10-module Cabinet 600*900*2000 / 23.6*35.5*78.8
Module (6/12 KVA) 430*600*134 / 17.3*23.6*5.27
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