PWM 방식 교류 전원 공급 장치(3상)

1. 장비에 대한 기본 이해

1.1 주요 기술 사양

사양/모델 번호	LSP-15KVAST, LSP-30KVAST, …… LSP-180KVAST
생산 능력	15 kVA, 30 kVA, … 180 kVA
회로 구성	(IGBT) Sine-Wave Pulse-Width Modulation (SPWM)
Output Voltage	Standard three-phase (can be set to single-phase output), automatic mode; low range: 0–150 V; high range: 150.1–300 V
출력 전류	LSP-15KVAST: Low range 27A, high range 13.5A. Other models follow the same pattern.
출력 주파수	45.00–70.00 헤르쯔
파형 왜곡	≤1% (high/low voltage: 220 V/110 V ±15%, resistive load)

1.2 Equipment Configuration Verification

1.2.1 포장 해제 및 육안 검사

When unpacking the device, handle it gently to avoid scratching the casing with sharp tools. After unpacking, first inspect the exterior of the device to ensure there is no visible deformation or dents, and that the buttons are not damaged or loose. If you notice any abnormalities with the device or its accessories, do not turn it on. Please contact us immediately.

1.2.2 본체 및 부속품

그림 1-1를 참조하세요.

번호	주의 사항
①	LSP-VAST Series Power Supply Unit
②	RS-232 communication cable; the communication function is currently disabled on this device, and this cable is a spare part.
③	Parallel copper busbars; for instructions on use, see 3.2.2
④	Key, used to lock/unlock the front panel of the device

그림 1-1

1.2.3 전자 문서 다운로드

We have already sent download links for the electronic user manual, calibration certificate, warranty card, and other documents via email at the time of shipment. Please download them as soon as possible. If you missed the email, you may contact us to request the download links again.

2. 안전상의 주의

2.1 Electrical Safety Standards

Please connect the input power supply strictly in accordance with the specifications on the equipment nameplate. The equipment must be properly grounded, with a protective grounding resistance of ≤4 Ω, to prevent the risk of electric shock.

2.2 Environmental Safety Standards

For indoor use only; avoid direct sunlight. Place on a sturdy, stable surface to prevent severe vibrations. Ensure the environment is free of dust, corrosive gases, and flammable or explosive materials. Keep away from strong magnetic and electric fields. Ensure adequate ventilation; leave at least 10 cm of space around the device for heat dissipation, and do not block the cooling fan vents. Operating Environment: Temperature 5°C to 35°C, relative humidity ≤65%.

2.3 Operational Safety Guidelines

Do not operate the equipment or plug in or unplug the power cord with wet hands; Output must be turned off before connecting or disconnecting wires; do not touch the output terminals, internal components, the load, or the load wiring while the equipment is operating; do not shut down the equipment directly while it is in the output state; turn off the output first before shutting down the equipment; if you notice a strange odor, smoke, unusual noise, or overheating, immediately disconnect the power and do not continue operation.

3. 장비 개요 및 배선

3.1 장비 외관

3.1.1 Introduction to the Front Panel

그림 3-1를 참조하세요.

번호	주의 사항
①	On/Off Output Button
②	터치 스크린
③	Front panel; open it to reveal the input and output wiring panel

그림 3-1

3.1.2 Product Nameplate Information

See Figure 3-2. The input and output voltages listed on the nameplate are line voltages (voltages between phases); please use these values as a guide when wiring the unit.

그림 3-2

3.2 장비 배선

3.2.1 Standard Wiring

그림 3-3를 참조하세요.

번호	주의 사항
①	Input wire terminals, consisting of three live wires and one neutral wire
②	입력 스위치
③	Output wire terminals, consisting of three live wires and one neutral wire
④	출력 스위치
⑤	Equipment Grounding Terminal

그림 3-3

3.2.2 Parallel Single-Phase Wiring

To drive a high-power single-phase load, use the single-phase parallel function (see Section 4.3) and short-circuit the three output live wires using a parallel copper busbar.

The remaining wiring is the same as in Section 3.2.1.

4. 터치스크린 프로그램 소개

4.1 초기화면

After confirming that the wiring is correct, turn on all input and output switches. The touchscreen will light up and display the initial screen, which shows the standard three-phase output mode. See Figure 4-1.

번호	주의 사항
①	Gear indicators: “H” indicates high gear; no indicator means low gear.
②	Output status display: “OFF” indicates no output; “ON” indicates output
③	Output Voltage Settings: The default setting is phase voltage (L-N), which can be switched to line voltage (L-L) on the system interface.
④	Output Frequency Settings
⑤	Output voltage display: By default, phase voltage (L-N) is displayed; this can be switched to line voltage (L-L) on the system interface.
⑥	Output Current Display
⑦	Output Frequency Display
⑧	시스템 인터페이스
⑨	Output Types and Operating Modes
⑩	Quick Setup: Opens the Quick Setup screen, allowing you to quickly set the desired voltage and frequency.
⑪	On the next page, you can view reactive power, active power, and power factor.
⑫	Start/Stop Output Button—functions the same as the Start/Stop Output button on the front panel
⑬	The touchscreen can be locked or unlocked; it automatically locks after a period of inactivity.
⑭	When the touchscreen is locked, a lock icon appears here.

그림 4-1

4.2 System Interface

그림 4-2를 참조하세요.

번호	주의 사항
①	Gear Selection: Low, High, or Auto
②	중국어와 영어 간 전환
③	L-L/L-N Display Switching
④	홈 화면으로 돌아가기

그림 4-2

Note: Leave the other settings on this screen at their factory defaults; do not change them.

4.3 Output Type and Operating Mode Interface

See Figure 4-3. The left column lists the output type options, and the right column lists the operating mode options.

번호	주의 사항
①	3상 출력
②	Single-phase parallel connection: Use copper busbars to short-circuit the three output phases to connect high-power single-phase loads.
③	American Standard two-phase, using N/A/B terminals
④	The three phases are independent; you can set parameters for each phase separately and control whether each phase outputs power individually, allowing you to connect three different single-phase loads.
⑤	Three-phase imbalance: Three-phase voltage parameters and phase angles can be set individually; the phase angle range for phases A and B is 110°–130°, the phase angle range for phases A and C is 230°–250°, and the phase angle for phases B and C is automatically matched.
⑥	Standard mode: All three phases are 120° apart, and the same voltage and frequency are set for all three phases.
⑦	Step mode: Allows programmable settings for different output voltages, frequencies, and output durations; automatically switches after output.
⑧	Gradual transition mode: The start and end values for output voltage and frequency, as well as the transition duration, can be programmed; after the output is activated, the voltage and frequency change gradually and uniformly.
⑨	Harmonic Mode: 30 harmonic types to choose from; fundamental voltage and fundamental frequency can be set
⑩	Soft-start mode: You can set the start voltage, start frequency, and start time simultaneously.
⑪	Step Mode: Allows you to set the initial output voltage and frequency, as well as the step voltage, step frequency, and step time. After output begins, the system automatically steps up or down from the initial voltage and frequency.

그림 4-3

Note 1: The default output type for this equipment is three-phase, and the default operating mode is Standard Mode.

Note 2: The available operating modes vary by output type; please follow the prompts on the device interface to make your selection.

Note 3: The available settings vary by output type; please follow the prompts on the device interface to make your selection.

5. 장비의 일상 유지보수 및 관리

5.1 일상적인 유지보수

5.1.1 일일 청소

Be sure to turn off the power and unplug the power cord before cleaning. We recommend using a soft, anti-static cotton cloth and a neutral detergent to wipe down the unit. Never spray liquid directly onto the device to prevent liquid from entering the interior.

5.1.2 정기 검사

Before each use, check to ensure that the power cord and terminal connections are secure and free of burn marks; that the fan vents are not blocked; and, after turning on the unit, verify that the display is functioning properly.

5.2 Storage Specifications

5.2.1 저장 환경 요구 사항

Temperature: 5°C to 35°C; relative humidity: ≤65% RH; dry, dust-free environment free of corrosive gases.

5.2.2 장기 저장 작업

Turn off the power and unplug all cables; clean the equipment and wrap it in dust-proof film; power it on for 30 minutes each month to prevent moisture damage to the components.

5.3 Calibration Interval Requirements

측정 정확도와 장비의 작동 신뢰성을 보장하기 위해, 자격을 갖춘 제3자 계측 연구소에 정기적으로 보내 교정을 받는 것이 좋습니다. 권장 교정 주기는 12개월입니다. 사용자는 사용 빈도, 환경 조건 및 품질 시스템 요구 사항을 고려하여 구체적인 교정 주기를 결정할 수 있습니다.

6. 문제 해결 및 일반적인 문제 해결 방법

결함 증상	가능한 원인들	순서
Alarm values “11/21/31”	IGBT Module Protection	Check for short circuits; try again after ruling them out.
Alarm values “12/22/32”	과전류	Reduce the load or check for a short circuit
Alarm values “13/23/33”	과부하	Reduce the load or purchase a power supply with a higher capacity
Alarm thresholds “14/24/34”	과열	This may be caused by excessive ambient temperature, excessive load, or a fan shutdown; address each issue accordingly.
Alarm thresholds “15/25/35”	과전압	Check whether there are any abnormalities in the actual output voltage and the displayed voltage.
The computer won’t turn on or there is no display	Input power supply abnormal	Check whether the input power supply is normal and whether there are any wiring errors or loose connections.
Power supply output fluctuations exceed the permissible range	Insufficient power supply warm-up, abnormal Input power supply; abnormal load	After powering on and allowing the system to warm up for five minutes, operate it under load; check that the input power supply is within the normal permissible range; check that the load is operating normally.