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OUR PARTNERS
(Products Line-Card)
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| | Danh mục nội dung: Chuyên mục chính/3. Hệ thống, công cụ và thiết bị phát triển sản xuất điện tử/3.2. Bộ đổi nguồn, tải điện tử, đo công suất (Power Supply & Electronics Load)
| | | | ◊ Đặc điểm chính: | |
3720A, 3721A, 3722A, 3723A and 3724A Electronic Loads provide an adaptable, and functional asset wherever power sources need to be tested.These units are designed to provide high reliability, great performance, and ease of operation with multiple functionality.
Feature
- 4 basic functions: CC, CV, CR, and CP ; and 8 basic test modes: CCL, CCH, CV, CRL, CRM, CRH, CPV, CPC
- High-speedsequence, high-speed transient, short-circuit, battery discharge and other auxiliary functions
- Minimum operating voltage is less than 0.6V at the load's full rated current
- Optional zero-voltage test accessories are available
- Programmable current slew rate
- Perfect protection assures high reliability in the most complicated of test environments
- Multiple groups of parameters and lists can be saved and recalled
- Ruggedized structure, exquisite user-friendly design and convenient operation
- Supports SCPI (Standard Commands for Programmable Instrumentation) and Labview, and provides necessary PC software
Bộ tải điện tử 3720A, 3721A, 3722A, 3723A và 3724A là sản phẩm chức năng, phù hợp cho các nhu cầu kiểm tra nguồn điện. Chúng được thiết kế để cung cấp độ tin cậy cao, tính năng cực mạnh và dễ vận hành với đa chức năng. Vì vậy, đây sẽ là thiết bị thiết yếu, quan trọng trong các trung tâm đo lường kiểm chuẩn bộ cấp nguồn hoặc các thiết bị biến đổi nguồn cấp điện cũng như là các trung tâm/ bộ phận thiết kế sản phẩm nguồn điện.
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High Reliability
- Protective circuitry provides over-current, over-voltage, over-power, over-temperature and reverse polarity protection to ensure the protection of the electronic load;
- A high-speed, power limiting circuit can limit input power rapidly when it is overloaded, thus there is no need to interrupt testing. Equipment adaptability to complicated operational environments is thereby greatly enhanced.
Great Performance
- Circuit improvement greatly enhances the dynamic response of CR mode and widens the application scope of that mode;
- The innovative CP mode can test voltage sources, current sources, and effectively prevent short-circuits as well when the tested power is insufficient;
- Minimum operating voltage is less than 0.6V at the load's full rated current. With optional low-voltage testing devices, the maximum current can be achieved even though the input voltage is 0V. This is especially suitable for fuel cell, solar cell and other new energy test applications;
- By adopting an optimum design of calculation method and high-speed hardware circuitry, the D/A conversion rate can reach 100kHz. The overall smoothness of slope control has been raised, meanwhile, the timing precision and resolution of dynamic test and sequential test have also been improved;
- The 24 bit A/D and 17 bit D/A converters incorporated, provide this equipment with greatly enhanced setting and measurement resolution.
Multifunction
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Equipped with four basic test functions: CC, CV,CR, CP;
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High-speed transient operation with separate high/low lever time and rising/falling time control;
- Powerful sequential test function; with a minimum step time of 10us; and a maximum step time of 10000s. Cyclic numbers can be adjusted freely and a sequence can be chained to another sequence to achieve even more complex test procedures;
- Providingshort-circuit test, battery discharge test and other auxiliary functions;
- Remote input terminal and external trigger input terminals are provided. The remote measurement can monitor the input signal automatically, and it is not necessary to change wiring or modify settings during operation;
- 10 groups of setup parameters can be saved, and providing automatic uploading of preset parameters;
- By supporting SCPI, it is easy to build an ATE (automatic test equipment) system that works with other programmable instruments via optional RS232, USB and GPIB interfaces.
Easy Operation
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Design optimized for portability and rugged reliability;
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Logical keypad design and convenient test operation;
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Easy-to-set test parameters coupled with a powerful sequence editing function;
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All electronic calibration - therefore no need to dismantle the equipment-chassis;
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Firmware can be updated online.
Specifications
(The warm-up time is 30 minutes. Specifications indicate warranted performance in the 25°C ± 5°C region of the total temperature range).
Model
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3720A
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3721A
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3722A
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3723A
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3724A |
Input Ratings
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Current
Voltage
Power*1
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0~30A
0~80V
250W at 40oC
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0~40A
0~80V
400W at 40oC
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0~20A
0~200V
200W at 40oC
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0~30A
0~200V
350W at 40oC
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0~20A
0~500V
0~250W
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Input Characteristics
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Input Characteristics
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Minimum Operation Voltage@Full Scale Current
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0.6V
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0.6V
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1.2V
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1.2V
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2V |
Constant Current Mode
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LowRange
Resolution
Accuracy
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0~3A
0.1mA
0.1℅+5mA
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0~4A
0.1mA
0.1℅+5mA
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0~2A
0.1mA
0.1℅+5mA
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0~3A
0.1mA
0.1℅+5mA
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0~2A
0.1mA
0.1%+5mA
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HighRange
Resolution
Accuracy
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0~30A
1mA
0.1℅+10mA
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0~40A
1mA
0.1℅+10mA
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0~20A
1mA
0.1℅+10mA
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0~30A
1mA
0.1℅+10mA
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0~20A
1mA
0.1%+10mA
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Constant Voltage Mode
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Range
Resolution
Accuracy
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0~80V
1mV
0.1℅+10mV
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0~80V
1mV
0.1℅+10mV
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0~200V
2mV
0.1℅+25mV
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0~200V
2mV
0.1℅+25mV
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0~500V
5mV
0.1%+62.5mV
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Constant Resistance Mode
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LowRange
Resolution
Accuracy
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0.02~2Ω
0.1mΩ
0.5℅+12mΩ @I>4A
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0.02~2Ω
0.1mΩ
0.5℅+12mΩ @I>4A
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0.0666~6.66Ω
0.1mΩ
0.5℅+40mΩ@I>3A
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0.0666~6.66Ω
0.1mΩ
0.5℅+40mΩ@I>3A
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0.125~12.5Ω
0.1mΩ
0.5%+150mΩ @I>2A
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MiddleRange
Resolution
Accuracy
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2~200Ω
8.6uS*2
0.3℅+1.25mS@V>8V
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2~200Ω
8.6uS
0.3℅+1.25mS@V>8V
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6.66~666Ω
2.6uS*2
0.3℅+375mS@V>20V
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6.6~666Ω
2.6uS*2
0.3℅+375mS@V>20V
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12.5~1250Ω
13.8uS
0.3%+1mS @V>50V
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HighRange
Resolution
Accuracy
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20~2000Ω
0.96uS
0.3℅+0.625mS@V>8V
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20~2000Ω
0.96uS
0.3℅+0.625mS@V>8V
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66.6~6660Ω
0.29uS
0.3℅+188uS@V>20V
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66.6~6660Ω
0.29uS
0.3℅+188uS@V>20V
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125~12500Ω
1.54uS
0.3%+0.5mS @V>50V
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Constant Power Mode
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Range
Resolution @P<100W
@P≥100W
Accuracy
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0~250W
1mW
10mW
0.2℅+600mW
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0~400W
1mW
10mW
0.2℅+600mW
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0~200W
1mW
10mW
0.2℅+600mW
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0~350W
1mW
10mW
0.2℅+600mW
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0~250W
1mW
10mW
0.2%+600mW
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Current Measurement
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LowRange
Resolution
Accuracy
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0~3A
0.1mA
0.05℅+4mA
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0~4A
0.1mA
0.05℅+4mA
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0~2A
0.1mA
0.05℅+4mA
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0~3A
0.1mA
0.05℅+4mA
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0~2A
0.1mA
0.05%+4mA
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HighRange
Resolution
Accuracy
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0~30A
1mA
0.05℅+8mA
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0~40A
1mA
0.05℅+8mA
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0~20A
1mA
0.05℅+8mA
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0~30A
1mA
0.05℅+8mA
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0~20A
1mA
0.05%+8mA
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Voltage Measurement
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Range
Resolution
Accuracy
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0~80V
1mV
0.1℅+8mV
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0~80V
1mV
0.1℅+8mV
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0~200V
1mV
0.1℅+50mV
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0~200V
1mV
0.1℅+50mV
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0~500V
1mV
0.1%+200mV
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Power Measurement
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Range
Resolution @P<100W
@P≥100W
Accuracy
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0~250W
1mW
10mW
0.1℅+600mW
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0~400W
1mW
10mW
0.1℅+600mW
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0~200W
1mW
10mW
0.1℅+600mW
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0~350W
1mW
10mW
0.1℅+600mW
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0~250W
1mW
10mW
0.1%+600mW
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Current Slew Rates
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RangeCCH
CCL*3
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1mA/us~3A/us
100uA/us~300mA/us
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1mA/us~4A/us
100uA/us~400mA/us
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1mA/us~2A/us
100uA/us~200mA/us
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1mA/us~3A/us
100uA/us~300mA/us
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1mA/us~2A/us
100uA/us~200mA/us
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Resolution
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1mA/us
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1mA/us
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1mA/us
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1mA/us
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1mA/us |
Accuracy*4
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3% + 10us
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3% + 10us
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3% + 10us
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3% + 10us
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3% + 10us |
Transient Operation
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Transient Mode
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Continuous, Pulse, Toggled
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Continuous, Pulse, Toggled
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Continuous, Pulse, Toggled
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Continuous, Pulse, Toggled
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Continuous, Pulse,
Toggled |
FrequencyRange*5
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0.38Hz~50kHz
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0.38Hz~50kHz
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0.38Hz~50kHz
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0.38Hz~50kHz
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0.38Hz~50kHz |
High/Low Time
Resolution
Accuracy
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0~655.35ms
10us
0.2℅+10us
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0~655.35ms
10us
0.2℅+10us
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0~655.35ms
10us
0.2℅+10us
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0~655.35ms
10us
0.2℅+10us
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0~655.35ms
10us
0.2%+10us
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Rising/Falling Time
Resolution
Accuracy
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10us~655.35ms
10us
0.2℅+10us
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10us~655.35ms
10us
0.2℅+10us
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10us~655.35ms
10us
0.2℅+10us
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10us~655.35ms
10us
0.2℅+10us
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10us~655.35ms
10us
0.2%+10us
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List Characteristics
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Step Time
Resolution
Accuracy
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10us~100000s
10us
0.2℅+10us
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10us~100000s
10us
0.2℅+10us
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10us~100000s
10us
0.2℅+10us
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10us~100000s
10us
0.2℅+10us
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10us~100000s
10us
0.2%+10us
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Number of Steps
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1~50
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1~50
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1~50
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1~50
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1~50 |
Cycle
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1~65535
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1~65535
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1~65535
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1~65535
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1~65535 |
StoreCapacity
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7 lists
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7 lists
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7 lists
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7 lists
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7 lists |
Expanded Functions
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Chain
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Chain
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Chain
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Chain
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Chain |
Battery Discharge
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Discharge Time
Resolution
Accuracy
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1s~100h
1s
0.2℅+1s
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1s~100h
1s
0.2℅+1s
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1s~100h
1s
0.2℅+1s
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1s~100h
1s
0.2℅+1s
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1s~100h
1s
0.2%+1s
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BatteryCapacity
Resolution
Accuracy
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1mAh~3000Ah
1mAh
0.3℅+0.01Ah
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1mAh~4000Ah
1mAh
0.3℅+0.01Ah
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1mAh~2000Ah
1mAh
0.3℅+0.01Ah
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1mAh~3000Ah
1mAh
0.3℅+0.01Ah
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1mAh~2000Ah
1mAh
0.3%+0.01Ah
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Short Circuit
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CCL Mode
CCH Mode
CV Mode
CRL Mode
CRM Mode
CRH Mode
CPV Mode
CPC Mode
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3.3A
33A
0V
0.018Ω
1.8Ω
18Ω
270W
0W
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4.4A
44A
0V
0.018Ω
1.8Ω
18Ω
420W
0W
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2.2A
22A
0V
0.06Ω
6Ω
60Ω
220W
0W
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3.3A
33A
0V
0.06Ω
6Ω
60Ω
370W
0W
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2.2A
22A
0V
0.12Ω
12Ω
120Ω
270W
0W
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Maximum Slew Rate
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Current
Voltage
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3A/us
0.6V/us
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4A/us
0.6V/us
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2A/us
0.6V/us
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3A/us
0.6V/us
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2A/us
0.6V/us
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Programmable Open Circuit
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≥20kΩ
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≥20kΩ
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≥20kΩ
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≥20kΩ
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≥20kΩ |
Trigger Input
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Trigger Level
Trigger Pulse Width
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TTL falling edge
≥10us
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TTL falling edge
≥10us
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TTL falling edge
≥10us
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TTL falling edge
≥10us
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TTL falling edge
≥10us
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Maximum Input Levels
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Current
Voltage
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33A
84V
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44A
84V
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22A
210V
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33A
210V
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22A
525V
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Protection Features
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OV, OC,OP,OT, RV
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OV, OC,OP,OT, RV
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OV, OC,OP,OT, RV
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OV, OC,OP,OT, RV
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OC, OV, OT, OP, RV |
Reverse Current Capacity
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Input OFF
InputON
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25A
40A
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30A
50A
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25A
35A
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25A
40A
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25A
35A
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Ripple and Noise
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Current(rms/p-p)
Voltage(rms)
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3mA/30mA
5mV
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3mA/30mA
5mV
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3mA/30mA
12mV
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3mA/30mA
12mV
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3mA/30mA
30mV
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Environmental Conditions
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Temperature
Relative Humidity
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0~50oC
≤85℅
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0~50oC
≤85℅
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0~50oC
≤85℅
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0~50oC
≤85℅
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0~50oC
≤85%
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Remote Interface*6
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RS232, GPIB, USB
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RS232, GPIB, USB
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RS232, GPIB, USB
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RS232, GPIB, USB
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RS232, GPIB, USB |
Programming Language
|
SCPI
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SCPI
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SCPI
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SCPI
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SCPI |
AC Input
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Voltage
Frequency
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AC110V or AC220V±15℅
48 to 63Hz
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AC110V or AC220V±15℅
48 to 63Hz
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AC110V or AC220V±15℅
48 to 63Hz
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AC110V or AC220V±15℅
48 to 63Hz
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AC110V or AC220V±15%
48 to 63Hz
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Net Weight
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5.8kg
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5.8kg
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5.8kg
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5.8kg
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5.8kg |
*1. Maximum continuous power available is derated linearly from 100% of maximum at 40oC, to 75% of maximum at 55 oC.
*2. Conductance (S) = 1 / Resistance (Ω).
*3. The set level is 10 times larger than the slew rate in CCL mode.
*4. The actual transition time is defined as the time required for the input to change from 10% to 90% or from 90% to 10% of the programmed excursion.
*5. Transient frequency depends on the time for high/low level and rising/falling edge.
*6. Full remote control via RS232 with optional GPIB and USB.
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