3020-01100-0 Murata Power Solutions Inc, 3020-01100-0 Datasheet - Page 2

• Manufacturer Part Number: 3020-01100-0
• Description: Digital Panel Meters 150A/50mV DC Shunt
• Manufacturer: Murata Power Solutions Inc
• Type: Base Mounted DC Shuntsr

Specifications of 3020-01100-0

• Equipment Type: Base Mounted DC Shunts
• Input: 100 mV
• Dimensions: 50.8 mm L x 31.7 mm W x 14.2 mm H
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3. Lead Extensions:
4. Continuous-Operation Derating:
5. Temperature Derating:
6. Intermittent (Pulsed) Operation:
P
Where
I
P
R
P
T
T
P
P
R
Lastly, use the formula
continuous-current at
I
e = Maximum permissible continuous current at elevated
e = 0.667
e =
e = Maximum power dissipation at the elevated temperature Te
a = 0.667 x shunt’s rated power at 25°C ambient
a = 0.667(150A x 0.050V) = 5.0 Watts
e = 5.0W[1-(100-25/100] = 5.0W x (1-0.75) = 1.25W
e = Elevated temperature
e = +100°C
= Shunt’s resistance (see selection guide for values)
= 0.00033 Ohms
temperature
0.00033Ω
1.25W
P
a x [1-(
T
= 61.5A
T
e
T
e-25°C)/100°C], and
I
e = +100°C:
e =
P
R
e
to fi nd the maximum derated
I
e =
www.murata-ps.com
P
R
e
current (
Where
I
P
P
D
K
R
Example: An 800 Amp 50mV shunt will be operated for 15 seconds
each minute. What is the maximum current this shunt can carry
during the 15-second ON time?
D
P
P
I
I
puls = Maximum pulsed current
pulsed =
puls =
puls = Maximum pulsed power
a = 0.667 x shunt’s rated power at 25°C ambient
a = 0.667 (800A x 0.050V) = 26.7 Watts
puls =
1 = Pulsed-operation rating factor (the square root of D)
= Shunt’s resistance (see selection guide for values)
= Ratio of ON TIME to ON TIME + OFF TIME
= 15/60 = 0.25 and
(period not to exceed 5 minutes)
I
P
puls) for a given shunt:
a/
Figure 2. Typical Low-Side Shunt Connections
P
Figure 3. Typical High-Side Shunt Connections
K
puls/
0.0000625Ω
1= 26.7W/0.5 = 53.4 Watts
53.4W
Technical enquiries
R
, and
K
P
1 = 0.25
puls =
= 924A
DMS Accessories
P
a/
= 0.5
K
calculate the maximum pulsed-
1, and
K
1 =
D