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Low Frequency Inverter

Low Frequency Inverter
Low Frequency Inverter
Product Code : 237
Product Description

Our vision to excel and establish a strong foothold in the market has assisted us to evolve as a prominent manufacturer and exporter of Low Frequency Inverter. This inverter is perfect for off-grid or back up power system. Our diligent workforce uses quality grade materials and components to manufacture this inverter. Inverter converts the DC power stored within a battery into AC power. The output power is used to run your household items and electrical appliances, from fridges to televisions. We make available this Low Frequency Inverter for clients in different specifications as per their requirements.

Introduction:

Sandi SDP series Low Frequency Inverter is one of the most advanced DC to AC conversion products in the world. It’s widely used for solar energy, wind turbine and other renewable energy systems. It has the main advantages of high quality sine wave AC output, 100% full power can work 24h*7, high efficiency, low no-load loss, powerful and complete protection which is more safe and reliable, setting flexibly and many unique functions, like variable frequency start, input output voltage, frequency can be set, AC bypass input and Monitoring optional. SANDI inverter's cost performance is the highest compared with others.

We also have won great reputation for earnest service and professional technology support all the time

Advantages:
  • Using the sixth generation efficient IPM intelligent module from Japanese Mitsubishi, high efficiency and stable performance. It with powerful protection function for short circuit, over load and over temperature which is more safe and reliable. It’s service life can up to 15-20 years or more.

  • Intelligentized, modularized and simple structure design, very easy and convenient for maintenance.

  • Two kinds of start mode: Step Down Voltage Start and Variable Frequency Start.

  • The output frequency 50Hz/60Hz can be set.

  • The output voltage can be set.

  • The DC input voltage range can be set. over-voltage point, under-voltage point, over-voltage recovery point, under-voltage recovery point and under voltage recovery time all can be set via the LCD panel.

  • Higher efficiency > 94%.

  • Pure sine wave output. with good transient response less than 50MS, little harmonic distortion, higher conversion efficiency and stable output voltage.

  • Low frequency transformer, which ensure the AC busbar and DC busbar are completely isolated to avoid interference, high efficiency and very little no-load loss.

  • Powerful data display and fault instruction function. LCD can display the DC input voltage, output frequency, phase voltage, phase current, AC bypass input voltage, output power KWH, time and date, temperature, fault code display.

  • Wide input voltage can be set according to customer’s requirement. Input voltage range can be selected from 100-400v or 200-600v or 400-850v. This wide voltage input off grid inverter can work without battery and solar charge controller, which save battery cost and same like with MPPT function can maximum make full use of solar power .

  • AC bypass input function optional: Battery Power Priority or AC Bypass Priority work mode can be set.

  • RS485 remote monitoring function optional

  • European CE (EMC and LVD) certification, accredited by Australian CEC, ERAC energy network, meet UL1741 and CSA22.2 standard.

Parameters:

Model

SDP-30KW

SDP-40KW

Isolation mode

Low Frequency Transformer

DC Input

Rated voltage(Vdc)

240V

300V

300V

360V

Rated current(A)

125A

100A

133.3A

111A

AC Output


Rated power(KW)

30KW

40KW

Rated voltage

220V±3%

380VAC±3%

220V±3%

380VAC±3%

Output phases

Single phase

3 phase

Single phase

3 phase

Rated current (A)

136A

45.5A

(phase current)

182A

61A

(phase current)

Output frequency

50Hz or 60Hz

Output waveform

Pure Sine Wave

Voltage accuracy

Load balance≤1%, Unbalance load≤5%

Waveform distortion rate (THD)

Linear load≤2%, Nonlinear load≤3%

Dynamic Response

5%, ≤50ms( load 0 ~ 100%)

Power Factor (PF)

0.95

Inverter Efficiency

>94%

Electrical insulation properties

2000Vac, 1 Minute

Running mode

Working continuously, can work 24h*7

Output voltage(Vac)

110/120/220/230/240/380/400/415/440VAC can be customized

Phases

Single / Two/ Three phase optional

Protection Function


Overload Ability

120% - 35 seconds, 150% - 5 seconds

Protection

Input reverse polarity, under voltage, over voltage, output over-current, short circuit, overheating etc.

Display

LCD

Communication port

RS485(Optional)

Cooling method

Fan-cooled

Short-circuit protection

No automatic recovery, need to restart the machine

Working environment

&

Mechanical dimension


Degree of protection

IP20(indoor)

Working Altitude (m)

2500m

Working temperature

-15~+50

Relative humidity

0~90%non-condensing

Noise ( 1 meter)

50dB

Depth* Width * Height

650x750x1100mm

Weight (Kg)

260Kg

300Kg

Certification

European CE(EMC & LVD)


Packing&Service:

  • Accept MOQ(1pcs of low frequency inverter is available) and OEM.

  • Packing of low frequency inverter is standard export honeycomb carton with pallet or wooden box.

  • Short delivery time 3-7 days.

  • Can be custom made.

  • Country of origin: China.



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