Laboratory power supply LongWei LWK3010D 30V 10A

Index: JBW-17852 EAN: 5904422309503

The small, precise, pulsed laboratory power supply LongWei LW-K3010D is equipped with two easy to read LED displays, which display the setpoint / current voltage and output current. Output voltage adjustable from 0 V to 30 V and current from 0 A to 10 A. It works in CV or CC mode, indicated by yellow LEDs.

Laboratory power supply LongWei LWK3010D 30V 10A
€83.50
€67.89 tax excl.
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Manufacturer: LongWei

Product description: Laboratory power supply LongWei LWK3010D 30 V 10 A

The small, precise, pulsed laboratory power supply LongWei LW-K3010Dis equipped with two easy to read LED displays, which display the setpoint / current voltage and output current.Output voltageadjustable from 0 V to 30 Vandcurrent from 0 A to 10 A.It works in CV or CC mode, indicated by yellowLEDs.

Zasilacz laboratoryjny LongWei LWK3010D LongWei LWK3010D laboratory power supply unit.

In the CV mode(constant voltage), the control range is from 0 V to 30 V with a 0.1 V setting resolution.The CC (constant current) modeallows a current setting from 0 A to 9.99 A with a resolution of 0.01 A (10 mA). The parameters are set using multi-turn potentiometers marked Voltage and Current. The PSU's structure is cooled bya fanthat starts automatically when internal components need to be cooled down (built-intemperatureprobe).

Zasilacz chłodzony wentylatorem

Fan-cooled power supply.

Specification of the LongWei LWK3010D power supply unit

  • Input voltage: 220V AC/50 Hz, 110V AC/60 Hz
  • Pmax output power: 300 W
  • Output voltage: 0 V to 30 V
  • Output current: 0 A to 10 A
  • Efficiency: > 85%
  • Accuracy of displaying the instantaneous voltage value: +/-0.5%
  • Accuracy of current display: +/-0.5%
  • Voltage stability in CV mode: < 20mV
  • Load stability in CV mode: < 50 mV
  • The pulses and noises in resume mode: < 30 mVrms
  • Current stability in CC mode: < 20 mA
  • Load stability in CC mode: < 20 mA
  • The pulses and noises in CC mode: < 20 mArms
  • Dimensions: 220 x 160 x 70 mm
  • Weight: 1,35 kg

The set includes

  • LongWei LWK3010D laboratory power supply unit
  • Power supply cable
  • 4 mm banana measuring tubes - crocodile
Voltage output from 0 V
Output voltage to 30.0 V
Nominal power 300 W
Current 3.5 V
Power supply - type laboratory
Power supply - Plug crocodile clips
Package width 30.5 cm
Package height 20 cm
Package depth 11 cm
Package weight 1.7 kg

Andrzej

10/04/21

Question: Good morning, Does it have any protection? For example, short circuit protection? Any other? Greetings Andrew
Answer: Identical in all LongWei power supplies
On the 230VAC power supply side, it is a varistor and LC noise filter.
On the DC output side, these are:

- diodes that measure the temperature of each of the two heat sinks of the transistors
keying transistors and switching on the fan that cools the inside of the case,
- an output current measuring circuit that compares the instantaneous current of the DC output
with the set value and, if an overload is detected in a fraction of a second
reducing the size of the output voltage (to maintain the output current
output current equal to the setting),
- there is a diode at the output to protect the output of the power supply from
connecting a battery with reverse polarity + against applying too
high voltage 'from the outside' to the DC output - in both the aforementioned cases
burns out in the direction of a short circuit,
- independently of this diode also works linearly of course comparator
voltage regulator - if we decrease the load (which will
result in increasing Uwy) then the regulator will reduce the pulse width of the
PWM signal and thus the output voltage will decrease to a value
consistent with the setting,
- There are, of course, also filters mounted on the output
LC anti-interference filters,

All the mentioned protections + regulators work together
through about 20 operational amplifiers mounted on the main board
main board and affect the operation of the executive circuit of the inverter
integrated PWM

Product reviews

Laboratory power supply LongWei LWK3010D 30V 10A

4.9/5

Average grade

64

Customers opinion
The following opinions are collected
and verified by
an external partner Trustmate
and come from the post-purchase process.
Rafał 05.02.2024 Confirmed purchase Translated review
For this price, a very decent device.
Vladimír 13.11.2023 Confirmed purchase Translated review
A cheap resource sufficient for my use
Ivan 10.11.2023 Confirmed purchase Translated review
Great
Anna 19.10.2023 Confirmed purchase Translated review
The power supply does its job. Used only twice, so it is difficult to assess the quality and its performance after long-term use. For now: a very good purchase, worth recommending.
Václav 22.08.2023 Confirmed purchase Translated review
The device works according to the specifications as it should. The panel is clear with a large display of set values. I can only recommend the device.
Marek 14.08.2023 Confirmed purchase Translated review
It met expectations. It does exactly what it needs to do.
Manfred 29.06.2023 Confirmed purchase Translated review
Fits.
Andrzej 21.06.2023 Confirmed purchase Translated review
I recommend
Monika 19.06.2023 Confirmed purchase Translated review
everything's fine
Dariusz 05.06.2023 Confirmed purchase Translated review
I recommend
Lumír 29.05.2023 Confirmed purchase Translated review
Thanks for the sent magnet samples Everything went well. Thanks. Sour
Michael 28.05.2023 Confirmed purchase Translated review
Everything went as it should...
Josef 16.04.2023 Confirmed purchase Translated review
So far so good, satisfaction. It is enough for a domestic kitten
Dawid 27.03.2023 Confirmed purchase Translated review
For this amount, it is the perfect equipment for electronics and robotics
Maksymilian 14.03.2023 Confirmed purchase Translated review
Slightly problematic to set the current limit. But other than that, a very nice power supply.
Mateusz 28.02.2023 Confirmed purchase Translated review
At this price, the PSU can be described as very good. I haven't had a chance to test it under full load yet but it seems like it shouldn't be a problem. Advantages: - cheap - small - light - regulation is quite precise. Recommended for the home workshop.
Robert 22.01.2023 Confirmed purchase Translated review
Is great
Marcela 08.11.2022 Confirmed purchase Translated review
I am satisfied with the product
Tomasz 30.10.2022 Confirmed purchase Translated review
It's okay, the product works as it should. Delivery on time. I recommend and greet.
Josef 24.09.2022 Confirmed purchase Translated review
Excellent thing. Quality design and processing. Fine tuning.
Radoslav Č. 02.07.2022 Confirmed purchase Translated review
All right
Monika D. 31.05.2022 Confirmed purchase Translated review
This is a prop for a documentary, but according to the chemist - everything works as it should
Witold P. 05.05.2022 Confirmed purchase Translated review
Quality / price approx
Dariusz K. 03.02.2022 Confirmed purchase Translated review
This is ex. for companies.
Krzysztof M. 01.02.2022 Confirmed purchase Translated review
Very good product
Lesław K. 20.01.2022 Confirmed purchase Translated review
Small and spring.
Pavel P. 26.12.2021 Confirmed purchase Translated review
Fast delivery, everything works.
Ondrej K. 25.12.2021 Confirmed purchase Translated review
It works
Krystyna P. 22.12.2021 Confirmed purchase Translated review
A good quality product I RECOMMEND
Tomasz R. 26.11.2021 Confirmed purchase Translated review
A decent cheap power supply for playing with electronics

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