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參數資料
| 型號： | SF4D-DC48V |
| 英文描述： | POLARISED, MONOSTABLE SAFETY RELAY |
| 中文描述： | 極化，單穩態安全繼電器 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 247K |
| 代理商： | SF4D-DC48V |
4
SF-RELAYS
Double contact
POLARISED, MONOSTABLE
SAFETY RELAY
mm
inch
.984
2 Form A 2 Form B
4 Form A 4 Form B
±
.650
±
.020
2.098
±
.012
0.5
1.299
±
.020
±
.650
±
.020
2.098
±
.012
FEATURES
High contact reliability
High contact reliability is achieved through
the use of a double contact.
Forced operation contacts
(2 Form A 2 Form B)
N.O. and N.C. side contacts are
connected through a card so that one
interacts with the other in movement. In
case of a contact welding, the other keeps
a min. 0.5mm
.020inch
contact gap.
Independent operation contacts
(4 Form A 4 Form B)
There are 4 points of forced operation
contacts.
Each pair of contacts is free from the main
armature and is independent from each
other. So if a N.O. pair of contacts are
welded, the other 3 N.O. contacts are not
effected (operate properly) That enables
to plan a circuit to detect welding or go
back to the beginning condition.
Separated chamber structure (2 Form
A 2 Form B, 4 Form A 4 Form B)
N.O. and N.C. side contacts are put in
each own space surrounded with a card
and a body-separater. That prevents short
circuit between contacts, which is caused
by their springs welding or damaged.
High breakdown voltage 2,500 Vrms
between contacts and coil
High sensitivity
Realizes thin shape and high sensitivity
(500 mW nominal operating power) by
utilizing high-efficiency polarized
magnetic circuit with 4-gap balanced
armature.
Complies with safety standards
Standard products are UL, CSA, TüV and
SEV certified. Comform to European
standards. TüV certified (945/EL, 178/
88). Complies with SUVA European
standard.
SPECIFICATIONS
Contact
Coil
Nominal operating power
Remarks
* Specifications will vary with foreign standards certification ratings.
*
1
Measurement at same location as “Initial breakdown voltage” section
*
2
Detection current: 10mA
*
3
Excluding contact bounce time
*
4
Half-wave pulse of sine wave: 11ms; detection time: 10
μ
s
*
5
Half-wave pulse of sine wave: 6ms
*
6
Detection time: 10
μ
s
*
7
Refer to 6. Usage, transport and storage mentioned in NOTES
Characteristics
Contact arrangement
2 Form A
2 Form B
4 Form A
4 Form B
Initial contact resistance, max.
(By voltage drop 6 V DC 1 A)
Contact material
Nominal switching
capacity
Max. switching power
Max. switching voltage
Max. carrying current
Expected
life (min.
operations)
30 m
Gold-flashed silver alloy
Rating
(resistive)
6 A 250 V AC, 6 A 30 V DC
1,500 VA, 180 W
440 V AC, 30 V DC
6 A
10
7
Mechanical (at 180 cpm)
Electrical (at 20 cpm)
10
5
500 mW
Contact arrangement
2 Form A
2 Form B
180 cpm (at nominal voltage)
Min. 1,000 M
at 500 V DC
1,300 Vrms
2,500 Vrms
2,500 Vrms
Approx. 17 ms Approx. 18 ms
4 Form A
4 Form B
Max. operating speed
Initial insulation resistance*
1
Between open contacts
Between contact sets
Between contact and coil
Operate time*
3
(at nominal voltage)
Release time (without diode)*
3
(at nominal voltage)
Initial
breakdown
voltage*
2
Approx. 7 ms
Approx. 6 ms
Temperature rise (at nominal voltage)
(at 20°C)
Max. 45°C
with nominal coil voltage and
at 6 A carry current
Min. 294 m/s
2
{30 G}
Min. 980 m/s
2
{100 G}
10 to 55 Hz at double
amplitude of 2 mm
10 to 55 Hz at double
amplitude of 2 mm
–40°C to +70°C
–40°F to +158°F
Shock resistance
Functional*
4
Destructive*
5
Vibration resistance
Functional*
6
Destructive
Conditions for operation,
transport and storage*
7
(Not
freezing and condensing at
low temperature)
Ambient
temp.
Humidity
5 to 85% R.H.
Unit weight
Approx.
38 g
1.34 oz
Approx.
47 g
1.66 oz
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