參數(shù)資料
型號: XLG4A
元件分類: 功率/信號繼電器
英文描述: POWER/SIGNAL RELAY, DPDT, LATCHED, 0.038A (COIL), 28VDC (COIL), 1064mW (COIL), 5A (CONTACT), 28VDC (CONTACT), SOCKET MOUNT
文件頁數(shù): 10/14頁
文件大?。?/td> 691K
代理商: XLG4A
Application notes
N°101
DERATING OF CONTACTS FOR DC VOLTAGES
ABOVE NOMINAL RATING
To establish a standard for the derating of relay contacts is, at best, a subjective practice. Limitations are governed by the type
of relay, contact gap, maximum voltage capabilities of the relay contact system, and the contact material.
The most common method is to derate the contacts by use of the Power Formula, using the known current and voltage.
This method is valid only for Resistive Loads, and is an approximation only; keeping in mind the limitations mentioned above.
Power = IE (Current x Voltage)
I2 E2 = 2/3 I1E1
Example:
A designer is working with a 55 volt DC system and has a relay rated at 10 amps resistive at 28 volts DC.
What is the maximum current that can be switched at 55 Vdc.
I1 = 10 Amperes
E1 = 28 VDC
E2 = 55 VDC
I2 = ? (Current ratings at 55 VDC Resistive)
I2 E2 = 2 I1 E1/3
I2 = 2 I1 E1/E23
= 2 (10 x 28)/55 x 3
= 560/165
I2 = 3.4 Amperes at 55VDC
In addition, the user should always be concerned about the following:
1. Derating contacts that are rated for less than 10 Amperes at nominal voltage.
2. Derating contacts for use in system voltages above 130 Volts DC
Date of issue: 6/00
- 14 -
Page 1 of 1
相關PDF資料
PDF描述
XLG4B POWER/SIGNAL RELAY, DPDT, LATCHED, 0.066A (COIL), 12VDC (COIL), 792mW (COIL), 5A (CONTACT), 28VDC (CONTACT), SOCKET MOUNT
XLG4C POWER/SIGNAL RELAY, DPDT, LATCHED, 0.14A (COIL), 6VDC (COIL), 840mW (COIL), 5A (CONTACT), 28VDC (CONTACT), SOCKET MOUNT
XLG4N POWER/SIGNAL RELAY, DPDT, LATCHED, 0.038A (COIL), 28VDC (COIL), 1064mW (COIL), 5A (CONTACT), 28VDC (CONTACT), SOCKET MOUNT
XLG4R POWER/SIGNAL RELAY, DPDT, LATCHED, 0.066A (COIL), 12VDC (COIL), 792mW (COIL), 5A (CONTACT), 28VDC (CONTACT), SOCKET MOUNT
XLG4V POWER/SIGNAL RELAY, DPDT, LATCHED, 0.14A (COIL), 6VDC (COIL), 840mW (COIL), 5A (CONTACT), 28VDC (CONTACT), SOCKET MOUNT
相關代理商/技術(shù)參數(shù)
參數(shù)描述
XLH335001.000000I 功能描述:OSCILLATOR XO 1.000MHZ HCMOS SMD 制造商:idt, integrated device technology inc 系列:XPRESSO? FXO-HC33 包裝:剪切帶(CT) 零件狀態(tài):在售 類型:XO(標準) 頻率:1MHz 功能:啟用/禁用 輸出:HCMOS 電壓 - 電源:3.3V 頻率穩(wěn)定度:±50ppm 工作溫度:-40°C ~ 85°C 電流 - 電源(最大值):32mA 等級:- 安裝類型:表面貼裝 封裝/外殼:4-SMD,無引線 大小/尺寸:0.130" 長 x 0.102" 寬(3.30mm x 2.60mm) 高度 - 安裝(最大值):0.039"(1.00mm) 電流 - 電源(禁用)(最大值):- 標準包裝:1,000
XLH335002.000000I 功能描述:OSCILLATOR XO 2.000MHZ HCMOS SMD 制造商:idt, integrated device technology inc 系列:XPRESSO? FXO-HC33 包裝:剪切帶(CT) 零件狀態(tài):在售 類型:XO(標準) 頻率:2MHz 功能:啟用/禁用 輸出:HCMOS 電壓 - 電源:3.3V 頻率穩(wěn)定度:±50ppm 工作溫度:-40°C ~ 85°C 電流 - 電源(最大值):32mA 等級:- 安裝類型:表面貼裝 封裝/外殼:4-SMD,無引線 大小/尺寸:0.130" 長 x 0.102" 寬(3.30mm x 2.60mm) 高度 - 安裝(最大值):0.039"(1.00mm) 電流 - 電源(禁用)(最大值):- 標準包裝:500
XLH335002.048000I 功能描述:OSCILLATOR XO 2.048MHZ HCMOS SMD 制造商:idt, integrated device technology inc 系列:XPRESSO? FXO-HC33 包裝:剪切帶(CT) 零件狀態(tài):在售 類型:XO(標準) 頻率:2.048MHz 功能:啟用/禁用 輸出:HCMOS 電壓 - 電源:3.3V 頻率穩(wěn)定度:±50ppm 工作溫度:-40°C ~ 85°C 電流 - 電源(最大值):32mA 等級:- 安裝類型:表面貼裝 封裝/外殼:4-SMD,無引線 大小/尺寸:0.130" 長 x 0.102" 寬(3.30mm x 2.60mm) 高度 - 安裝(最大值):0.039"(1.00mm) 電流 - 電源(禁用)(最大值):- 標準包裝:500
XLH335004.000000I 功能描述:OSCILLATOR XO 4.000MHZ HCMOS SMD 制造商:idt, integrated device technology inc 系列:XPRESSO? FXO-HC33 包裝:剪切帶(CT) 零件狀態(tài):在售 類型:XO(標準) 頻率:4MHz 功能:啟用/禁用 輸出:HCMOS 電壓 - 電源:3.3V 頻率穩(wěn)定度:±50ppm 工作溫度:-40°C ~ 85°C 電流 - 電源(最大值):32mA 等級:- 安裝類型:表面貼裝 封裝/外殼:4-SMD,無引線 大小/尺寸:0.130" 長 x 0.102" 寬(3.30mm x 2.60mm) 高度 - 安裝(最大值):0.039"(1.00mm) 電流 - 電源(禁用)(最大值):- 標準包裝:500
XLH335008.000000I 功能描述:OSCILLATOR XO 8.000MHZ HCMOS SMD 制造商:idt, integrated device technology inc 系列:XPRESSO? FXO-HC33 包裝:帶卷(TR) 零件狀態(tài):在售 類型:XO(標準) 頻率:8MHz 功能:啟用/禁用 輸出:HCMOS 電壓 - 電源:3.3V 頻率穩(wěn)定度:±50ppm 工作溫度:-40°C ~ 85°C 電流 - 電源(最大值):32mA 等級:- 安裝類型:表面貼裝 封裝/外殼:4-SMD,無引線 大小/尺寸:0.130" 長 x 0.102" 寬(3.30mm x 2.60mm) 高度 - 安裝(最大值):0.039"(1.00mm) 電流 - 電源(禁用)(最大值):- 標準包裝:500