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參數(shù)資料
| 型號： | SF3 |
| 英文描述： | POLARISED, MONOSTABLE SAFETY RELAY with (mechanical linked) forced contacts operation |
| 中文描述： | 極化，單穩(wěn)態(tài)與安全繼電器（機(jī)械連接）強(qiáng)迫接觸行動 |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 338K |
| 代理商： | SF3 |
262
SF
If the two form “a” contacts (Nos. 2 and 4) weld, the armature becomes non-operational and the gap between the two form "b"
contacts is maintained at greater than 0.5 mm
.020 inch
. Reliable isolation is thus ensured.
Form “a” Contact Weld
If the No. 2 contact welds.
Each of the two form "b" contacts (Nos. 1 and 3)
maintains a gap of greater than 0.5 mm
.020 inch
.
No.4
No.3
No.1
No.2
Energized
No.4
No.3
No.1
No.2
Non-energized (when no. 2 contact is welded)
No.4
No.3
No.1
No.2
Contact No.
Terminal No.
No.1
11–12
No.2
7–8
No.3
5–6
No.4
9–10
State of other contacts
1
2
>0.5
>0.5
>0.5
>0.5
3
4
Welded
terminal
No.
1
2
3
4
>0.5
>0.5
>0.5
>0.5
Note: Contact gaps are shown at the initial state.
If the contacts change state owing to loading/breaking
it is necessary to check the actual loading.
>0.5: contact gap is kept at min. 0.5 mm
.020 inch
Empty cells: either closed or open
Contact No.
Contact No.
The table below shows the state of the other contacts when the current through the welded form “a” contact is 0 V and the rated
voltage is applied through the form “b” contact.
Contact Operation Table
1) 2a2b Type
If the form “b” contacts (Nos. 1 and 3) weld, the armature becomes non-operational and the contact gap of the two form “a” contacts
is maintained at greater than 0.5 mm
.020 inch
. Reliable isolation is thus ensured.
Form “b” Contact Weld
If the No. 1 contact welds.
A gap of greater than 0.5 mm
.020 inch
is main-
tained at each of the two form "a" contacts (Nos.
2 and 4).
No.4
No.3
No.1
No.2
Non-energized
No.4
No.3
No.1
No.2
Energized (when no. 1 contact is welded)
THE OPERATION OF SF RELAYS (when contacts are welded)
SF relays work to maintain a normal operating state even when overloading or short-circuit currents occur. It is also easy to include
weld detection circuits and safety circuits in the design to ensure safety even if contacts weld.
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參數(shù)描述 |
|---|---|
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| SF-30 | 制造商:Shinagawa Shoko 功能描述: |
| SF30.0004 | 制造商:MARTIN SMT 功能描述:PCB SUPPORT 40.5MM 1.5MM PK 制造商:MARTIN SMT 功能描述:PCB SUPPORT 40.5MM 1.5MM PK4 制造商:MARTIN SMT 功能描述:PCB SUPPORT, 40.5MM, 1.5MM, PK4 制造商:MARTIN SMT 功能描述:PCB SUPPORT, 40.5MM, 1.5MM, PK4, Accessory Type:PCB Support, For Use With:MASTER |
| SF30.0005 | 制造商:MARTIN SMT 功能描述:PCB SUPPORT 40.5MM 3MM PK4 制造商:MARTIN SMT 功能描述:PCB SUPPORT, 40.5MM, 3MM, PK4 |
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