Dynamic Voltage Restorer(NVR)

Novtium NVR uses power electronics technology. When the voltage of the system suddenly drops temporarily, NVR can quickly adjust the voltage, eliminate the three-phase imbalance of the voltage, and have an adjustment voltage deviation to ensure that the output voltage is seamlessly connected to the rating, protecting the load. Run normally.

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Description

Features

1.Rapid voltage dip correction;
2.Large unit capacity (50-3600 kVA);
3.Perfect sine degree of waveform compensation;
4.Continuous online voltage adjustment;
5.Phase angle error correction;
6.Control the correction of voltage fluctuation and flickering;
7.Excellent voltage regulation precision (±1V);
8.Low energy consumption of itself, and smaller land occupation area;
9.High efficiency and high reliability;
10.Eliminate voltage three-three imbalance in the same time.

?Electrical structure diagra

?NVR device effect (common and enhancement)

Class	common（NVR）			enhancement（NAUP）
Voltage drop	Voltage left	Compensation effect	Lasting time	Voltage left	Compensation effect	Lasting time
Three-phase Voltage sag	0~90%	90%~110%	400ms	0~90%	90%~110%	>3s，Arbitrary custom
Two-phase Voltage sag	0~90%	90%~110%	600ms	0~90%	90%~110%	>4.5s，Arbitrary custom
Single-phase voltage sag	0~90%	90%~110%	1200ms	0~90%	90%~110%	>9s，Arbitrary custom

?Comparison table of NVR to traditional voltage sage produc

Specification	Novtium Dynamic Voltage Regulator (NVR)	Static uninterrupted power supply (UPS)
Parallel operation-free capacity range (parallel operation may reduce the reliability)	50 to 3600kVA	Typically, 1 to 400kVA
Land occupation area of installation	Small	Large
Energy storage element	None	A large amount of batteries required
Power consumption of product itself	Very low, efficiency up to 99%	Very high, only 87-93% efficiency
Installation of clean room	Suitable, with many installation cases	Not suitable, as there is batteries
O&M cost	Very low	Very high, as its high power consumption, and the batteries shall be changed at each 3-5 years, as well as the continuous battery monitoring and tests
Air conditioner	Unneeded	Air conditioner with large capacity needed
Fault rate	Low, no power down of load occurs even the NVR fails	High, and if the UPS fails, it easily results in the power down of load
Power-off protection	None, as the power down is very rare, thus it is not necessary to increase a large amount of cost and maintenance quantity for this purpose	With, but it is necessary to guarantee all the batteries able to normally work (depend on the aging degree of batteries)
Harmonic pollution	Without harmonic pollution	May produce higher harmonic pollution
Environmental implication (green-level)	Very slight due to high efficiency, long service life and less maintenance	Serious, as the low efficiency and the toxic substance in batteries such as lead, acid and plastics, plus the battery treatment and cyclic utilization

?Product parameter

Input
Input voltage	208V-480V (other voltage levels optional)
Electric power system type	TN-S
Max. input voltage	110%Us
Overvoltage class	Ⅲ
Fault tolerance ability	>40kA
Outage	>400ms
Frequency	50/60Hz±5%
Output
Output voltage	90%～110%Un
Voltage adjustment precision	±2%
Efficiency	>99%
Response time	<1ms
Frequency	50/60Hz±5%
Device
Capacity	50-3600kVA, expansion up to 30MVA
Overload capacity	150%, last for 30s
Crest factor	3(100%In)
Communication protocol
Access protocol	Ethernet interface/optical fiber/485

Bypass
Rated capacity	100%Sn
Overload capacity	150% 60s
	500% 1s
	2000% 200ms
Switch time	<5ms，from inverter to bypass
Switch time	<250ms，from bypass to inverter
Working environment
Operating temperature	-30 to +50 (over 40℃, derating 2% for each rise of 1℃)
Operating humidity	<95%，no condensation
Elevation	0-1500 (over 1500m, derating 1% for each rise of 100m)
Noise	<40分貝
IP grade	IP21 or IP 23, with other IP grades optional
System
Display	8” color LCD display, used for setting and monitoring
Touch screen	Complete parameter display
Voltage setting	1% gradient adjustment
Reliability
Service life	Design life of 20 years
Safety	Auto bypass switching, and no system failure due to the device

Send Inquiry

Please feel free to contact with us at sales@cnshengyuan.cn, info@cnshengyuan.cn or filling up an enquiry form instructed at the bottom, You will get an effective response within 24 hours from Shengyuan sales representative.
Thanks for your valued time with interest!

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