V511BA60 Littelfuse Inc, V511BA60 Datasheet - Page 3

• Manufacturer Part Number: V511BA60
• Description: VARISTOR INDUST 510V 1800J BA
• Manufacturer: Littelfuse Inc
• Series: BAr
• Type: MOVr

Specifications of V511BA60

• Varistor Voltage: 820V
• Current-surge: 70kA
• Number Of Circuits: 1
• Maximum Ac Volts: 510VAC
• Maximum Dc Volts: 675VDC
• Energy: 1800J
• Package / Case: Chassis Mount
• Voltage Rating Dc: 675 V
• Voltage Rating Ac: 510 V
• Clamping Voltage: 1.3 KV
• Peak Surge Current: 70 KA
• Surge Energy Rating: 1800 J
• Capacitance: 5000 pF
• Operating Temperature Range: - 55 C to + 85 C
• Mounting: SMD/SMT
• Dimensions: 60 mm Dia. x 100 mm L
• Termination Style: Screw
• Brand/series: BA Series
• Current, Peak: 70000 A
• Energy Rating: 1800 Joules
• Mounting Style: Bolt-Down
• Package: Screw
• Resistance, Insulation: 1000 Megohms
• Technology: Metal Oxide
• Temperature, Operating, Maximum: 85 °C
• Temperature, Operating, Minimum: -55 °C
• Terminal Type: Screw
• Voltage, Ac: 510 VAC
• Voltage, Clamping: 1300 V
• Voltage, Dc: 675 VDC
• Voltage, Operating: 575⁄730 VAC/VDC
• Voltage, Varistor: 910
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

BA/BB Varistor Series
Varistor Products
High Energy Industrial
Power Dissipation Ratings
Should transients occur in rapid succession, the average power dissipation
required is simply the energy (watt-seconds) per pulse times the number
of pulses per second. The power so developed must be within the
specifications shown on the Device Ratings and Characteristics table for
the specific device. Furthermore, the operating values need to be derated
at high temperatures as shown in Figure 1. Because varistors can only
dissipate a relatively small amount of average power they are, therefore,
not suitable for repetitive applications that involve substantial amounts of
average power dissipation.
Typical Performance Curves
FIGURE 3. STANDBY POWER DISSIPATION vs APPLIED
0.08
0.06
0.04
1.0
0.8
0.6
0.4
0.2
0.1
TYPICAL TEMPERATURE COEFFICIENT
OF POWER DISSIPATION = 2.2%/
MAX A T T
MAX A T T
TYP AT T
V
80
RMS
PERCENTAGE OF MAXIMUM RA TED V
AT VARIED TEMPERATURES
A
A
A
= 25
= 85
= 25
O
100
90
50
10
1
o
o
o
C
C
C
90
T
T
1
o
C
T
2
100
RMS
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
(%)
w w w . l i t t e l f u s e . c o m
TIME
110
Example: For an 8/20µs Current Waveform:
20µs = T
8µs = T
O
T
T
T = Time From 10% to 90% of Peak
1
1
2
FIGURE 4. TYPICAL STABILITY OF STANDBY POWER
100
= Virtual Origin of Wave
= Virtual Front Time = 1.25 • t
= Virtual Time to Half Value (Impulse Duration)
90
80
70
60
50
40
30
20
10
-55
0
0.5
0.4
0.3
0.2
0.1
2
1
0
= Virtual Time to Half Value
= Virtual Front Time
0
50
1,000 HOURS, T
DISSIPATION AT RATED V
60
70
AMBIENT TEMPERATURE (
TIME AT RATED V
80
A
10
= 85
90
o
C
100
RMS
RMS
110
(HOURS)
100
vs TIME
o
120
C)
130
140 150
1,000
83
2