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參數(shù)資料
| 型號(hào)： | TMOV20R320E |
| 廠商： | Littelfuse, Inc. |
| 元件分類： | 壓敏電阻 |
| 英文描述： | Varistor Products - Thermally Protected |
| 中文描述： | 壓敏電阻器產(chǎn)品-熱保護(hù) |
| 文件頁(yè)數(shù)： | 5/9頁(yè) |
| 文件大小： | 835K |
| 代理商： | TMOV20R320E |
2
V
P
Varistor Products
28
www.littelfuse.com
Thermally Protected
TMOV
and
i
TMOV
Varistor Series
1
2
3
3
2
1
Thermal
Fuse
Element
MOV
Thermal
Fuse
Element
MOV
Monitor Lead
i
TMOV Varistor Application Examples
The application examples below show how the indicator lead on the
i
TMOV can be used to indicate that the thermal element has been
opened.This signifies that the circuit is no longer protected from
transients by the MOV.
Application Example 1 (Figure 1)
In this case, the LED is normally on, and is off when the thermal
element opens.
Application Example 2 (Figure 2)
This circuit utilizes an optocoupler to provide galvanic isolations
between the
i
TMOV varistor and the indicating or alarm circuitry.
Application Example 3 (Figure 3)
This circuit illustrates the use of the monitoring lead of the
i
TMOV
varistor to ensure that equipment is only operated when overvoltage
protection present. In normal operation the load switch relay solenoid is
powered via the indicator lead of the
i
TMOV varistor. In the event of the
thermal element being activated, the relay will de-activate, cutting power
to the protected circuit and the fault LED will illuminate.
Please note: Indicator circuits are provided as a guideline only.
Verification of actual indicator circuitry is the responsibility of the end
user. Component values selected must be appropriate for the specific
AC line voltage service and application.
R
LED
Line Fuse
i
TMOV Varistor
Neutral
Line
Figure 1. Application example 1
R
Line Fuse
i
TMOV Varistor
Neutral
Figure 2. Application example 2
AC OPTOCOUPLER
TO STATUS
ANNUNCIATOR
LIGHT/ALARM
Line Fuse
i
TMOV Varistor
Neutral
Figure 3. Application example 3
Fault LED
(Normallyoff)
"Load Powered"
neon lamp
Load Switch Relay
(loss of protection)
R
T
T
T
Line
Line
Lead Configurations
TMOV Varistor
i
TMOV Varistor
Note: MOVs are non-polarized passive elements
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TMOV20R320EP | 制造商:Littelfuse 功能描述:Metal Oxide Varistor (MOV) |
| TMOV20R320M | 功能描述:壓敏電阻 320Vrms 750pF 20mm Disc RoHS:否 制造商:EPCOS 產(chǎn)品:MLV 電壓額定值 DC:22 V 電壓額定值 AC:17 V 鉗位電壓:50 V 直徑: 峰值浪涌電流:30 A 浪涌能量額定值:75 mJ 電容:74.2 pF 工作溫度范圍:- 55 C to + 125 C 安裝:SMD/SMT 封裝:Reel |
| TMOV20R320MP | 制造商:Littelfuse 功能描述:Var MOV 320VAC 10000A 561V Radial Bulk |
| TMOV20R385E | 功能描述:壓敏電阻 385Vrms 700pF 20mm Disc RoHS:否 制造商:EPCOS 產(chǎn)品:MLV 電壓額定值 DC:22 V 電壓額定值 AC:17 V 鉗位電壓:50 V 直徑: 峰值浪涌電流:30 A 浪涌能量額定值:75 mJ 電容:74.2 pF 工作溫度范圍:- 55 C to + 125 C 安裝:SMD/SMT 封裝:Reel |
| TMOV20R385M | 功能描述:壓敏電阻 385Vrms 700pF 20mm Disc RoHS:否 制造商:EPCOS 產(chǎn)品:MLV 電壓額定值 DC:22 V 電壓額定值 AC:17 V 鉗位電壓:50 V 直徑: 峰值浪涌電流:30 A 浪涌能量額定值:75 mJ 電容:74.2 pF 工作溫度范圍:- 55 C to + 125 C 安裝:SMD/SMT 封裝:Reel |
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