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Electric power industry 0.5-40KVA
Telecommunication industry 0.5-10KVA
 
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Inverter - Telecommunication industry 0.5-10KVA
Products
Basic Features :

        Inverter adopts SPWM and CUP technology and the main circuit used advanced imported power modular. It can switch 12V/24V/48V/110V/220V DC power to AC which is 220V, 50Hz; regulate voltage and frequency, low noise, and pure sine wave.
        As development of the information network technology, the sine wave inverter as the new generation DC/AC exchange power have been already widely applied in telecommunication, Mobile, Unicom, aerospace, railroad, financial management, office automation, industry automatic control, the health, military scientific research etc various industries. The sine wave inverter takes the input using the battery direct current, after inversion outputs the pure sine wave alternating current. The output voltage and frequency are extremely stable which makes the UPS realize the long-term continuous working. It eliminates the disadvantages caused by power failure, not steady voltage, noise disturbance and lightning invasion etc and overcomes the short time power supplying disadvantage like small UPS to guarantees the equipment continuously reliable work. Choosing sine wave inverter is the best guarantee for the system security and reliable operation.

Product Models

Inverter for electric power industry

HF (ND series)

DC 220V input AC 220V output

DC 110V input AC 220V output

LF (NB series)

DC 220V input AC 220V output

DC 110V input AC 220V output

Inverter for telecommunication industry

HF (ND series)

DC 48V input AC 220V output

LF (NB series)

DC 48V input AC 220V output

Applications
Inverter specially designed for the posts and telecommunications correspondence, is suitable applied specially in program controlled switch with 48V (or - 48V) DC power (DC screen), computer engine room, network, cost server and illumination etc places. 
Inverter specially designed for electrical industry with input DC voltage 110V/220V and output 220VAC/50HZ pure sine wave AC power is mainly used in power plant, power system and railway etc important places.
HF Inverter Features
1. Combined software and hardware protection mode, high reliability
2. With perfect protection function: input polarity reversed, input over/low voltage, output over voltage/current, short circuit, machine inner over heat, and soft start functions.
3. Uses three compound filter and magnetic shield to reduce noise voltage to the input end, the electromagnetic compatibility is fine.
4. Intelligent fans speed governing system.
5. Can be connected with pure sensitive load (need to reduce rated power)
6. Compact size, light weight, high efficiency, easy operation, no pollution.
LF Inverter Features
LF inverter is the new-pattern inverter which adopts advanced high frequency pulse-duration modulation technology and the microcomputer control technology design with the advantages of high reliability, perfect protection functions, small wave distortion etc.
It can transfer 220V DC to AC which is 220V, 50Hz; regulate voltage/frequency, small noise and pure sine wave. This product has the high transfer efficiency. (it reaches as high as above 80% under full load condition). Besides, it also has strong load driving force for non-linear load. This series inverter can inspect and monitor the input voltage, current and output voltage, in order to realize the unmanned guard and maintenance function. 
1. Adopts advanced SPWM and CPU control technology;
2. With advantages of high reliability, input and output isolation, safe, high efficiency and small wave distortion etc.
3. With perfect protection functions:
Output overload protection; input reversed connection function;
Output over voltage protection; input low voltage protection;
Output short circuit protection; input over voltage protection;
4. Bypass automatic transfer realize equipments continuous working;
5. Can be used in bad environment, with strong stability and high reliability;
6. With strong driving force for non-linear load, can be made for big capacity power.
Specification
I. HF inverter (ND series) used in telecommunication system: DC 48V input and AC 220V output.

Model

ND500

ND1000

ND2000

ND3000

ND5000

Rated capacity

500VA

1000VA

2000VA

3000VA

5000VA

Rated output power

400W

800W

1600W

2400W

3500W

DC input

Rated input voltage

48V

Rated input freq.

10A

25A

50A

75A

125A

Cut voltage range

40V~60V

Start voltage range

46V~57V

Resist noise current

≤10%

AC input

Bypass voltage allowed

220Vac±15%

Rated input current

2.3A

4.5A

9.1A

13.6A

22.7A

Bypass transfer time

≤5ms

AC output

Rated output voltage and freq.

220Vac,50Hz

Wave form

Pure sine wave

Rated output current

1.8A

3.6A

7.2A

10.8A

16A

Output voltage precision

220V±1.5%

Output freq. precision

50Hz±0.1%

Total harmonic distortion(THD)

≤3% (linear load)

Dynamic response time

5% (load 0←→100%)

Power factor(PF)

0.7/0.8

Overload capacity

120%, 30s

Inverter efficiency

≥85%

Work condition

Insulating strength

1500Vac,1min

Noise(1m)

≤40dB

Work temperature

-5℃~40℃

Humidity

0~90% (non-condensing)

Altitude

≤1000m

Cooling method

Forced-air cooling

Inverter status

Main normal, inverter normal, battery low voltage, output overload

Dimension

19’ rack mount (2U) (mm)

482×88.8×252

482×88.8×352

482×88.8×382

Weight (kg)

5Kg

7 Kg

8 Kg

11 Kg

13 Kg

Tower (mm)

/

175×274×452(mm)

220×330×452(mm)

Weight (kg)

/

8 Kg

9 Kg

12 Kg

15 Kg

Protection function

Input low voltage, over voltage; output overload, short circuit protection, main high and low voltage protection

Output mode

Socket or terminal

Terminal


II. LF inverter (NB series) used in telecommunication system: DC 48V input and AC 220V output

Model

NB1000

NB2000

NB3000

NB4000

NB5000

NB6000

NB10000

Rated capacity

1KVA

2KVA

3KVA

4KVA

5KVA

6KVA

10KVA

Bypass and DC input

Bypass input voltage

220Vac±20%,50Hz±10%

DC input voltage

48Vdc

Rated input current

20A

39A

59A

78A

98A

118A

196A

DC input start voltage

44Vdc~60Vdc

DC input cut voltage

42Vdc~60Vdc

AC output

Output power

0.7KW

1.4KW

2.1KW

3.2KW

4.0KW

4.8KW

8KW

Output voltage and freq.

220Vac±20% (main mode); 220Vac±2% (inverter mode); 50Hz±1%

Rated output current

4A

7A

11A

15A

18A

22A

36A

Power factor

0.7/0.8

Wave form

Pure sine wave

Total harmonic distortion

≤3%

Dynamic load voltage transient

±5% (load 0←→100%)

Overload capacity

(125~150%) transfer to bypass automatically after 30s, can resume; >150%, transfer to bypass after 200ms, can’t resume

Full load efficiency

≥99% (main mode); ≥85% (inverter mode)

Bypass transfer time

≤6ms

Protection function

Overload, battery low voltage, low voltage, over voltage, failure

Display

Index display

Work condition

Insulating
strength

Input output ground 1500VAC, 1 min, leakage current <3.5mA

Cooling method

Forced-air cooling

Noise (1m)

<55dB

Work temperature

-10℃~40℃

 Humidity

0~95% (non-condensing)

Altitude

<1500m

Dimension

Rack mount(mm)

480×137×410

480×137×460

482×222.5×500

/

Weight(kg)

15.5KG

32KG

38KG

55KG

65KG

70KG

/

Tower(mm)

216×170×439

432×196×546

200×680×540

200×1080×980

Weight(kg)

18.5KG

32KG

38KG

50KG

55KG

58KG

120KG

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