欧美国产在线精品17p,国产精品一区二区久久精品,欧美黑人又粗又长,国产极品大乳在线观看

歡迎進入蘇州德計儀器儀表有限公司網站! 固話:0512-68790450 手機:13915418480 返回首頁 | 聯系我們
大家都在搜: 固緯安規測試儀,固緯耐壓測試儀,固緯LCR測試儀
產品中心/ product center 您的位置:網站首頁 > 產品中心 > > 交直流電子負載 > PEL-2020 PEL-2030 PEL-2040 PEL-2041 可程式直流電子負載
產品分類
products
  1. 交直流電子負載
  2. 查看更多
可程式直流電子負載

可程式直流電子負載

產品型號: PEL-2020 PEL-2030 PEL-2040 PEL-2041

所屬分類:交直流電子負載

產品時間:2024-05-08

簡要描述:PEL-2000可編程直流電子負載,此電子負載可以工作在定電流、定電壓、定電阻模式下,還可模擬各種動態負載狀況,透過序列功能進行負載電壓、電流、負載的上升及下降斜率、電流準位、持續時間等參數來編輯負載波形,同時提供外部波形信號控制以及V&I監測功能,測試參數及狀態的存儲可高達120組,系統可根據自動測試需求,隨時由儀器內部的儲存單元EEPROM中呼叫出來使用

詳細說明:

特點
-Sequence function to do high speed load simulations
-Flexible configuration with mainframes and plug-in modules
-Multiple independent load inputs up to 8 channels in a mainframe
-Sequence function to do high speed load simulations
-Parallel connection of inputs for increased load capacity
-Parallel connection of inputs for static and dynamic tests
-Multiple channels run for dynamic tests under one clock control
-Maximum rated power for low range high resolution CC tests
-Von setting and Von on/off for start-up Von tests
-Program mode to create work routines for repetitive tests
-OPP/OCP/OVP/OTP protections
-External channel control/monitoring via an analog control connector
-Multi-Interface USB Device / Host, RS-232C, and GPIB (Optional)
-Multi-mainframe link up to 5 mainframes in a system
 
PEL-2020(1002)
 
POWER
20W
100W
 
 
CURRENT
0~2A
0~20A
 
 
VOLTAGE
1~80V
 
MIN.OPERATING VOLTAGE(DC)
1.0V at 2A
1V at 20A
 
 
STATIC MODE
CONSTANT CURRENT MODE
 
Range
0~2A
0~20A
 
 
 
Resolution
0.5mA
5mA
 
 
 
Accuracy
±0.1%±0.1%F.S.
±0.1%±0.2%F.S.
 
 
CONSTANT RESISTANCE MODE
 
Range
0.075Ω~300Ω(100W/16V)
3.75Ω~15K(100W/80V)
 
 
Resolution
12bits
 
 
Accuracy
300Ω : ± 0.1 ± 0.2%
15KΩ: ± 0.01 ± 0.1%
 
CONSTANT VOLTAGE MODE
 
Range
1~80V
 
 
Resolution
20mV
 
 
Accuracy
±0.05% ± 0.1%F.S.
 
DYNAMIC MODE
CONSTANT CURRENT MODE
 
T1&T2
0.025mS ~ 10mS / Res : 1uS
1mS ~ 30S / Res : 1mS
 
 
Accuracy
1uS / 1mS ± 100ppm
 
 
Slew Rate(Accuracy 5%)
0.32 ~ 80mA/uS
3.2 ~ 800mA/uS
 
 
 
Slew Rate Resolution
0.32mA/uS
3.2mA/uS
 
 
 
Current
0~2A
0~20A
 
 
 
Current Resolution
0.5mA
5mA
 
 
 
Current Accuracy
±0.4% F.S.
 
MEASUREMENT
VOLTAGE READBACK
 
Range
0~16V
0~80V
 
 
 
Resolution
0.5mV
2.5mV
 
 
 
Accuracy
±0.05% ± 0.05% F.S.
 
 
 
Range
0~2A
0~20A
 
 
 
Resolution
0.0625mA
0.625mA
 
 
 
Accuracy
±0.1% ± 0.1% F.S.
 
PROTECTIVE
Over Power Protection(2%)
 
Range
1~102W
 
 
 
Resolution
0.5W
 
 
 
Accuracy
 
 
 
Over Current Protection(2%)
 
Range
0~20.4A
 
 
 
Resolution
0.05A
 
 
 
Accuracy
 
 
 
Over Voltage Protection(2%)
 
Range
1~81.6V
 
 
 
Resolution
0.2V
 
 
 
Accuracy
 
 
 
 
Over Temperature Protection
85℃
 
Rated Power Protection(2 %)
 
Value
110W
 
 
 
Accuracy
 
 
 
GENERAL
SHORT CIRCUIT
 
Current(CC)
2.2/2A
22/20A
 
 
 
Voltage(CV)
0V
0V
 
 
 
Resistance(CR)
3.75Ω
0.075Ω
 
 
INPUT RESISTANCE(LOAD OFF)
800KΩ(Typical)
 

 

 
PEL-2030(250W/30W)
POWER
30W
30W
250W
CURRENT
0~5A
0~4A
0~40A
VOLTAGE
1~80V
MIN.OPERATING VOLTAGE(DC)
1.0V at 5A
1.0V at 4A
1.0V at 40A
STATIC MODE
CONSTANT CURRENT MODE
 
Range
0~5A
0~4A
0~40A
 
Resolution
1.25mA
1mA
10mA
 
Accuracy
±0.1%±0.1%F.S
±0.1%±0.1%F.S
±0.1%±0.2%F.S
CONSTANT RESISTANCE MODE
 
Range
0.3Ω~1.2KΩ(30W/16V)
15Ω~60K(30W/80V)
0.0375Ω~150Ω(250W/16V)
1.875Ω~7.5K(250W/80V)
 
Resolution
12bits
 
Accuracy
12KΩ : ±0.1 ± 0.2%
60KΩ: ±0.01 ± 0.1%
150Ω : ±0.1 ± 0.2%
7.5KΩ: ±0.01 ± 0.1%
CONSTANT VOLTAGE MODE
 
Range
1~80V
 
Resolution
20mV
 
Accuracy
±0.05% ± 0.1%F.S.
DYNAMIC MODE
CONSTANT CURRENT MODE
 
T1&T2
0.025mS ~ 10mS / Res : 1uS
1mS ~ 30S / Res : 1mS
 
Accuracy
1uS / 1mS + 100ppm
 
Slew Rate(Accuracy 5%)
0.8 ~ 200mA/uS
0.64 ~ 160mA/uS
6.4 ~ 1600mA/uS
 
Slew Rate Resolution
0.8mA/uS
0.64mA/uS
6.4mA/uS
 
Current
0~5A
0~4A
0~40A
 
Current Resolution
1.25mA
1mA
10mA
 
Current Accuracy
±0.4% F.S.
MEASUREMENT
VOLTAGE READBACK
 
Range
0~16V
0~80V
0~16V
0~80V
 
Resolution
0.5mV
2.5mV
0.5mV
2.5mV
 
Accuracy
±0.05% ± 0.05% F.S.
CURRENT READBACK
 
Range
0~5A
0~4A
0~40A
 
Resolution
0.15625mA
0.125mA
1.25mA
 
Accuracy
±0.1% ± 0.1% F.S.
PROTECTIVE
Over Power Protection(2%)
 
Range
1~30.6W
1~255W
 
Resolution
0.15W
1.25W
 
Accuracy
 
 
Over Current Protection(2%)
 
Range
0~5.1A
0~40.8A
 
Resolution
0.0125A
0.1A
 
Accuracy
 
 
Over Voltage Protection(2%)
 
Range
1~81.6V
1~81.6V
 
Resolution
0.2V
0.2V
 
Accuracy
 
 
 
Over Temperature Protection
85℃
Rated Power Protection(2 %)
 
Value
33W
275W
 
Accuracy
 
 
GENERAL
SHORT CIRCUIT
 
Current(CC)
5.5/5A
4.4/4A
44/40A
 
Voltage(CV)
0V
0V
0V
 
Resistance(CR)
15Ω
0.3Ω
1.875Ω
0.0375Ω
INPUT RESISTANCE(LOAD OFF)
800KΩ(Typical)

 

 

 
PEL-2040
PEL-2041
POWER
35W
350W
35W
350W
CURRENT
0~7A
0~70A
0~1A
0~10A
VOLTAGE
1~80V
2.5~500V
MIN.OPERATING VOLTAGE(dc)
1.0V at 7A
1V at 70A
2.5V at 1A
2.5V at 10A
STATIC MODE
CONSTANT CURRENT MODE
 
Range
0~7A
0~70A
0~1A
0~10A
 
Resolution
1mA
10mA
0.2mA
2mA
 
Accuracy
±0.1%±0.1%F.S.
±0.1%±0.2%F.S.
±0.1%±0.1%F.S.
±0.1%±0.2%F.S.
CONSTANT RESISTANCE MODE
 
Range
0.025Ω~100Ω(350W/16V)
1.25Ω~5K(350W/80V)
1.25Ω~5KΩ(350W/125V)
50Ω~200K(350W/500V)
 
Resolution
12bits
12bits
 
Accuracy
100Ω : ±0.1 ± 0.2%
5KΩ: ±0.01 ± 0.1%
5KΩ : ±0.02 ± 0.2%
200KΩ: ±0.005 ± 0.1%
CONSTANT VOLTAGE MODE
 
Range
1~80V
2.5~500V
 
Resolution
20mV
100mV
 
Accuracy
±0.05% ± 0.1%F.S.
±0.05% ± 0.1%F.S.
DYNAMIC MODE
CONSTANT CURRENT MODE
 
T1&T2
0.025mS ~ 10mS / Res : 1uS
1mS ~ 30S / Res : 1mS
0.025mS ~ 10mS / Res : 1uS
1mS ~ 30S / Res : 1mS
 
Accuracy
1uS / 1mS ± 100ppm
1uS / 1mS ± 100ppm
 
Slew Rate(Accuracy 5%)
0.001 ~ 0.28A/uS
0.01 ~ 2.8A/uS
0.16 ~ 40mA/uS
1.6 ~ 400mA/uS
 
Slew Rate Resolution
0.001A/uS
0.01A/uS
0.16mA/uS
1.6mA/uS
 
Current
0~7A
0~70A
0~1A
0~10A
 
Current Resolution
1mA
10mA
0.2mA
2mA
 
Current Accuracy
±0.4% F.S.
±0.4% F.S.
MEASUREMENT
VOLTAGE READBACK
 
Range
0~16V
0~80V
0~125V
0~500V
 
Resolution
0.5mV
2.5mV
4mV
16mV
 
Accuracy
±0.05% ± 0.05% F.S.
±0.05% ± 0.05% F.S.
CURRENT READBACK
 
Range
0~7A
0~70A
0~1A
0~10A
 
Resolution
0.175mA
1.75mA
0.032mA
0.32mA
 
Accuracy
±0.1% ± 0.1% F.S.
±0.1% ± 0.1% F.S.
PROTECTIVE
Over Power Protection(2%)
 
Range
1~357W
1~357W
 
Resolution
1.75W
1.75W
 
Accuracy
 
 
Over Current Protection(2%)
 
Range
0~71.4A
0~10.2A
 
Resolution
0.175A
0.025A
 
Accuracy
 
 
Over Voltage Protection(2%)
 
Range
1~81.6V
1~510V
 
Resolution
0.2V
1.25V
 
Accuracy
 
 
 
Over Temperature Protection
≒85℃
≒85℃
Rated Power Protection(2 %)
 
Value
385W
385W
 
Accuracy
 
 
 
GENERAL
SHORT CIRCUIT
 
Current(CC)
≒7.7/7A
≒77/70A
≒1.1/1A
≒11/10A
 
Voltage(CV)
0V
0V
0V
0V
 
Resistance(CR)
≒1.25Ω
≒0.025Ω
≒50Ω
≒1.25Ω
INPUT RESISTANCE(LOAD OFF)
800KΩ(Typical)
800KΩ(Typical

PEL-2000可編程直流電子負載,此電子負載可以工作在定電流、定電壓、定電阻模式下,還可模擬各種動態負載狀況,透過序列功能進行負載電壓、電流、負載的上升及下降斜率、電流準位、持續時間等參數來編輯負載波形,同時提供外部波形信號控制以及V&I監測功能,測試參數及狀態的存儲可高達120組,系統可根據自動測試需求,隨時由儀器內部的儲存單元EEPROM中呼叫出來使用。

PEL-2000系列包含兩種主控含機框PEL-2002(可容納雙模組)與PEL-2004(可容納四模組),採用模組化設計,協助使用者保留未來可能會運用到更高功率需求的擴充性,目前提供4款負載模組分別為:PEL-2020(200W雙通道負載模組100W*2 ; PEL-2030 (280W雙通道負載模組30W+ 250W) ; PEL-2040(350W單通道負載模組);PEL-2041(350W單通道負載模組)],以PEL-2004來代表zui多可以組成8個通道同步使用,功率範圍200W~350W,電流範圍0~70A,電壓範圍1~500V,使用者可依據實際需求,選擇的負載模組及控制模組進行組合或自組負載系統,可同步執行多組電子負載模組拉載的應用,同時每個模組採用隔離與地浮接方式,避免造成短路回路 ; 現今綠能產業蓬勃發展,PEL-2000 系列符合各式消費性電子及車用能源設備測試的需求,透過外部排線並聯控制功能,zui多可以同時控制五個主機框,並讓總體的總使用功率達到7kVA。

PEL-2000系列配備RS232、USB、GPIB(選配)接口、GO/NG接口,同時還配備了驅動程序和針對LabView、VB、C、C++等相關測試軟體範例。PEL-2000系列主要應用於多通道或單通道輸出的AC/DC電源、DC/DC電源模組、充電器及電源類電子元件性能的測試,對設計研發、生產線測試及產品檢測作業上提供快速有效的測試方案,同時具有的OPP、OCP、OVP、OTP、低壓保護以及正反向極性保護功能,更大幅提高了產品的可靠性、是工程測試及自動測試環境得以信賴的產品。

 
A. AUTOMATICALLY SEQUENCE FUNCTION
The Sequence function allows each channel to change its load sink according to a predefined sequence at a rate of up to 100 s per step. Each sequence is able to run concurrently, under the control of one clock. This is one of the most powerful features of the PEL-2000 Series as it is able to realistically simulate a multi-output power supply load. Under Dynamic mode, the load current or load resistance pulses between two preset levels at a pre-defined speed up to 25 s per step. This is often used as the standard test procedure to verify the response of a power supply to quick load changes.

The picture above is an example of a sequence used as a load profile for a single output switching power supply. A load profile is programmed to simulate the current draw of a power supply load. By using a current probe to acquire a current waveform, the PEL-2000 is able to evaluate the performance of a power supply based on the load sequence that is programmed. An oscilloscope is then used to display the result.
 
B. MULTIPLE OPERATING MODE
C.C. ( Constant Current )
In Constant Current mode, a load unit will sink the amount of current programmed. Regardless of the voltage change, the current will stay the same. Two selectable ranges are available for constant current mode: High (HI) and low (LO) range. Low range has a higher resolution for high precision measurements. If the current exceeds the low range, high range must be used. The PEL-2000 Series offers the maximum rated power for the low measurement range. This unique feature enables high-resolution measurements at high voltage only if the load current doesn't exceed the rated low range level. Both static and dynamic modes are available for CC operation. Static mode can be used for stability tests and Dynamic mode can be used to test transient load performance of a power supply. Go/NoGo is supported for both high and low ranges as well as Static and Dynamic modes.

C.V. ( Constant Voltage )
In Constant Voltage mode the load unit will sink current whilst keeping the voltage constant. Under CV mode, single channel load modules support two levels of voltage (A Value, B Value) with a preset cut-off current limit. An A / B button is available on the load module front panels to switch the Constant Voltage between A Value and B Value for power supply load regulation testing. Dual channel load modules only support A Value for CV mode. To accommodate the response of a power supply, response rates during voltage transitions can be set to fast or slow under static test mode.

C.V.+C.C. ( Constant Voltage + Constant Current )
When using CV mode, a current limit can be set for CV+CC mode. If the input voltage is greater than the preset CV limit, the channel will operate in CV mode if the input current is less than the preset CC limit. When the input current exceeds the current limit, the channel will operate in CC mode.

C.R. ( Constant Resistance )
In Constant Resistance mode the load units will linearly sink current and voltage to match a set resistance. Two different CR values and two different rising and falling slew rates can be set under CR Mode for single channel load modules. Like CC mode, Constant Resistance mode supports both dynamic and static loads. As with the other modes, Go/No Go is also supported.
 
C. PARALLEL DYNAMIC LOADING
All the load channels in a PEL-2000 mainframe can be connected in parallel to perform any combination of static or dynamic loading. Under Dynamic mode, the load current or load resistance pulses between two preset levels at a predefined speed of up to 25 s per step. When the channels are connected in parallel, dynamic tests are synchronously clocked. The ability to perform parallel dynamic loading gives you the flexibility to perform dynamic tests to highpower power supplies without the need for a dedicated high power electronic load.
 
D. FRAME LINK
The PEL-2000 Series allows multiple mainframes to be linked together with standard MIL 20-pin connectors to provide higher power load capacity. A maximum of 5 mainframes maximum, including one master and 4 slaves, can be chained together to give a 7kW load capacity for high current and high power applications
 
E. RUN PROGRAM
Under "Program" mode, up to 12 programs each with 10 panel setup memories, can be edited to create work routines for repetitive tests. After a program has completed, the results of all test steps, including the Go/NoGo judgments will be shown on the screen. Up to 12 programs with a total of up to 120 panel-setup memories can be chained together to be run one after the other.
 
F. PROTECTION MODES
The PEL-2000 Series includes a number of protection modes: Over Current Protection (OCP), Over Voltage Protection (OVP), Over Power Protection (OPP), Reverse Voltage Protection (RVP), and Under Voltage Protection (UVP). The protection modes are useful to protect both the load modules and the DUT(s). A buzzer can be set for when a protection setting has been tripped. When a protection mode has been tripped, the load unit will display an alarm and stop sinking current/voltage. When a load unit is operating in CR or CV mode, the unit may need Over Current Protection to prevent excessive current being sunk. Over Current Protection stops the load from sinking more current than its recommended limit and prevents the load from burn-out damage. Over Voltage Protection is used to limit the amount of voltage sunk. If the OVP trips, the PEL-Series load will stop sinking voltage. Over Power Protection is used when the input power exceeds the specifications of the load. When OPP is tripped, the power will cease to be sunk. Reverse Voltage Protection prevents reverse voltage damage to the PEL-2000 Series up to the specified rating. When Reverse Voltage Protection has been tripped, an alarm tone will sound until the reverse voltage is removed. Under Voltage Protection will turn off the load when the voltage drops below a set limit.
 
G. Von VOLTAGE SETTINGS
Von Voltage is the voltage limit at which the load will start to sink current. The Von Voltage setting is necessary for some kinds of power supply if a heavy load is connected during load on. There are two operation modes for Von Voltage: Latch ON and Latch OFF. When Von Latch is set to ON, the load starts to sink current when input voltage exceeds Von, and will continue to sink current even if the voltage drops below the Von Voltage later. When Von Latch is set to OFF, the load starts to sink current when input voltage exceeds Von, but will stop sinking current when the voltage drops below the Von voltage setting. This is to prevent the power supply from running into oscillation when the output voltage goes below certain level.
 
H. EXTERNAL CHANNEL CONTROL
A six-pin analog control connector is available on the rear panel to externally turn a load on/off and to externally monitor the load input status of each channel, including input current, input voltage, and CC current or CV settings. The Voltage Monitor Output (VMON) and Current Monitor Output (IMON) output the load input voltage and load input current as a percentage of rating current/voltage. Where 0 volts = 0% rating and 10 volts = 100% load input rating voltage or current. The voltage monitor output is across pins 1 & 3, and the current monitor output is across pins 1 & 2. Below shows the pin configuration of the voltage and current monitor outputs.
To turn a load on, an active low voltage (0-1V) must be applied across Load On (pin 5) and GND (pin 1), similarly an active high voltage (4-5V) must be applied to turn a load off. The Load On input must be TTL.



留言框

  • 產品:

  • 您的單位:

  • 您的姓名:

  • 聯系電話:

  • 常用郵箱:

  • 省份:

  • 詳細地址:

  • 補充說明:

  • 驗證碼:

    請輸入計算結果(填寫阿拉伯數字),如:三加四=7

在線客服 二維碼

掃一掃,關注我們

欧美国产在线精品17p,国产精品一区二区久久精品,欧美黑人又粗又长,国产极品大乳在线观看
久久综合九色综合97婷婷女人| 欧美一区中文字幕| 亚洲国产毛片aaaaa无费看 | 国产精品女上位| 国产精品一级在线| 一区二区在线观看视频| 日韩一区二区三区免费看| 国产大片一区二区| 亚洲图片自拍偷拍| 国产色一区二区| 欧美精品乱码久久久久久按摩| 国产精品123| 蜜臀av性久久久久av蜜臀妖精 | 国产美女主播视频一区| 亚洲成a人片在线观看中文| 欧美成人女星排名| 欧美日韩一区中文字幕| 成人国产精品免费观看动漫| 日本不卡视频在线| 亚洲大型综合色站| 亚洲美腿欧美偷拍| 一区精品在线播放| 国产午夜精品在线观看| 日韩三区在线观看| 91国模大尺度私拍在线视频| 盗摄精品av一区二区三区| 久久99精品久久久久久| 奇米影视一区二区三区| 亚洲大片在线观看| 亚洲aⅴ怡春院| 亚洲高清视频中文字幕| 亚洲影视在线播放| 亚洲一区二区三区四区五区黄| 中文字幕一区二区三区在线不卡| 欧美国产欧美综合| 国产精品激情偷乱一区二区∴| 久久婷婷综合激情| 国产日韩av一区| 国产蜜臀av在线一区二区三区| 精品sm捆绑视频| 国产亚洲欧美日韩在线一区| 国产亚洲婷婷免费| 亚洲人成电影网站色mp4| 一区二区在线看| 日产国产高清一区二区三区| 久久狠狠亚洲综合| 豆国产96在线|亚洲| 成人黄色av电影| 欧美最猛性xxxxx直播| 欧美高清视频不卡网| 精品少妇一区二区三区| 中文字幕av免费专区久久| 亚洲免费av高清| 日本aⅴ免费视频一区二区三区| 久久99精品国产麻豆婷婷洗澡| 国产精品中文字幕欧美| 91丨九色丨黑人外教| 91精品国产综合久久久久| 久久久精品天堂| 亚洲午夜av在线| 国产一区二区视频在线播放| 91香蕉视频mp4| 亚洲精品一区二区精华| 亚洲男人天堂av| 精彩视频一区二区三区| 色综合久久中文字幕综合网| 日韩欧美在线观看一区二区三区| 国产精品久久久久9999吃药| 日本网站在线观看一区二区三区 | 久久精品一级爱片| 依依成人精品视频| 国产成人精品影视| 日韩欧美色电影| 亚洲成人免费在线| 国产99久久久久久免费看农村| 欧美日韩精品专区| 18成人在线观看| 国产精品一区二区你懂的| 欧美日韩精品电影| 一区二区三区免费| 成人av在线资源| 久久精品一级爱片| 国精产品一区一区三区mba视频| 欧美日韩一区久久| 亚洲午夜私人影院| 日本电影亚洲天堂一区| 国产精品国产三级国产aⅴ无密码 国产精品国产三级国产aⅴ原创 | 一区二区三区91| 成人av在线资源网站| 久久精品在线观看| 国产电影精品久久禁18| 26uuu亚洲婷婷狠狠天堂| 久久精品噜噜噜成人av农村| 欧美日本一区二区在线观看| 亚洲电影在线免费观看| 欧美视频在线一区二区三区| 一区av在线播放| 欧美日韩精品欧美日韩精品一| 亚洲韩国精品一区| 欧美精品自拍偷拍| 久久精品国产**网站演员| 精品久久久久久久久久久久包黑料| 日日夜夜一区二区| 久久蜜桃av一区精品变态类天堂| 精品写真视频在线观看| 国产精品久久久久久久午夜片| 成年人国产精品| 亚洲成人激情综合网| 欧美一区二区三区影视| 国产乱理伦片在线观看夜一区| 国产日产欧产精品推荐色 | 欧美国产综合色视频| 白白色 亚洲乱淫| 亚洲综合激情小说| 欧美一区中文字幕| 99久久精品一区二区| 午夜av电影一区| 久久精品亚洲一区二区三区浴池 | 亚洲视频香蕉人妖| 欧美久久久久久久久| 国产v日产∨综合v精品视频| 亚洲欧美一区二区不卡| 欧美一区二区在线观看| 成人激情文学综合网| 三级成人在线视频| 中文字幕在线一区二区三区| 欧美人与z0zoxxxx视频| 成人av手机在线观看| 麻豆91小视频| 亚洲一区二区三区在线看| 亚洲精品一区二区三区影院| 色噜噜狠狠色综合欧洲selulu| 日本欧美一区二区三区乱码| 亚洲欧美日韩综合aⅴ视频| 久久色在线观看| 制服丝袜亚洲网站| 91免费看视频| 国产91精品精华液一区二区三区 | 亚洲一区二区三区美女| 久久久久久久久97黄色工厂| 欧美日韩三级一区| 色域天天综合网| 成人在线视频一区二区| 国产真实乱偷精品视频免| 琪琪久久久久日韩精品| 亚洲福利视频一区二区| 亚洲一区二区三区中文字幕 | 日韩欧美一区电影| 欧美人xxxx| 欧美视频精品在线观看| 色美美综合视频| 日本久久一区二区三区| 色欧美片视频在线观看在线视频| 波多野结衣在线aⅴ中文字幕不卡| 国产精品一区二区三区四区| 国产精品99久久久久久似苏梦涵 | 欧美大片一区二区三区| 欧美日韩一区二区欧美激情| 欧美在线不卡一区| 欧美日韩精品二区第二页| 欧美日韩精品二区第二页| 欧美日韩高清一区二区三区| 欧美乱妇一区二区三区不卡视频| 欧美日韩视频在线第一区| 欧美一级夜夜爽| 亚洲精品一区二区三区99| 亚洲国产高清在线| 亚洲另类一区二区| 午夜欧美电影在线观看| 捆绑调教美女网站视频一区| 国产麻豆精品久久一二三| gogogo免费视频观看亚洲一| 在线国产亚洲欧美| 91丨九色丨蝌蚪富婆spa| 欧美久久久久免费| 日韩精品一区国产麻豆| 国产精品美女久久久久aⅴ| 亚洲欧美色一区| 亚洲日穴在线视频| 亚洲视频精选在线| 亚洲国产欧美一区二区三区丁香婷| 午夜久久久久久久久久一区二区| 日韩二区三区在线观看| 国产成人a级片| 欧美伦理视频网站| 国产蜜臀97一区二区三区 | 国产a级毛片一区| 91成人免费电影| 精品国产三级a在线观看| 成人免费一区二区三区视频| 日本中文字幕一区| 91在线你懂得| 久久女同精品一区二区| 亚洲大片精品永久免费| 成人精品一区二区三区四区| 777精品伊人久久久久大香线蕉| 国产日韩影视精品| 毛片av一区二区| 色综合天天做天天爱| 久久久亚洲精品石原莉奈|