SSA - Smart Current Sensor
Amplified Analog Output and Reinforced Isolation
Nominal Current Maximum Current Power Supply (3.0 to 5.5vdc) Differential Analog Output 2.62 volts maximum unclipped Offset (maximum) Initial Accuracy Linearity over Current Range Bandwidth (unfiltered) Reaction Time (typical) Thermal EMF (maximum) Long term stability Reinforced Isolation Operating Temperature Storage Temperature
Materials
Secondary Mating Connector Optional Accessories
• 100A to 1000A • 1500VDC Reinforced Isolation • Amplified Output • 0.1% Tolerance • Compared to Hall Effect Technology
» Superior Overall Current Measurement Accuracy » Unipolar Power Supply » Lower Temperature Drift » No Periodic Calibration » Higher operating temperature range • Typical Applications: » Battery Systems » UPS systems » Motor Drives » Frequency Inverters » Fuel Cells
SPECIFICATIONS
100A, 250A, 500A, 1000A - others on request
2 times nominal
3.0V, 20mA typical
high impedance load
5.5V, 40mA typical
high impedance load
100A =12mV/amp 250A = 5mV/amp
500A = 2.5mV/amp 1000A = 1.25mV/amp
≤ ± 0.3mV
± 0.1% (offset is zeroed prior to calibration)
± 0.1% of range
300kHz
1.6µS (input step function, 50% rise on input to 50% rise on output)
0.05mV/°C
< ±0.2% 1000 hours 45°C terminal temperature < ±0.5% 1000 hours 100°C terminal temperature
1500VDC 1000VAC RMS (maximum working voltage)
- 40°C to +85°C ambient - 40°C to +125°C primary conductor ( see derating curve on page 4 )
- 55°C to +125°C
Resistance Element: Manganin Terminal Block: Nickel Plated Copper
Suitable for Copper, Copper-Clad Aluminum or Aluminum conductors
Electronics Housing: 94-V0 Potting Material: 94-V0 rated
JST type J04R-JWPF-VSLE-S (housing), SWPR-001T-P025 (contact)
SSA-CABLE-length (pre-terminated mating cable, 1 meter standard) SSA-BASE (Insulated panel mounting fixture (94-V0))
Riedon Inc.
© Riedon, Inc.
300 Cypress Avenue Alhambra CA 91801
(626) 284-9901
www.riedon.com
[email protected]
(626) 284-1704
Revised: 202006_002
SSA - Smart Current Sensor
Amplified Analog Output and Reinforced Isolation
C I
D
B A
H
B A
Standard Configuration
3.9 G
F E 2
A (±0.5) B (±0.5) C (±0.3) D (±0.3) E (±0.3) F (MAX) G (±0.5) H (±0.5) I (±0.2) J (±0.3) K (±0.3)
Mass
SSA-100 63.5 83.8 19.1 4.9 17.8 29 41 29.8 8.7 80g
Dimensions (mm)
SSA-250 SSA-500
63.5
63.5
83.8
83.8
19.1
19.1
4.9
8
17.8
21.3
29
33
41
41
29.8
29.8
8.7
8.7
-
-
-
-
90g
121g
SSA-1000 63.5 83.8 38.1 8 21.3 33 50 29.8 8.7 19.05 9.5 215g
3.9
CJ K
G I
-Vo +Vo
+3.0 to +5.5VDC GND
Product Safety notice: The SSA current sensor must be used in a manner specified by this datasheet, otherwise the protection provided by the equipment may be impaired
Please note that the SSA series should not be treated as a structural part of the installation and must be properly supported on both ends.
Ordering Information
Riedon Inc.
© Riedon, Inc.
Example: SSA-250
100 250 500 1000
Size
300 Cypress Avenue Alhambra CA 91801
(626) 284-9901
www.riedon.com
[email protected]
(626) 284-1704
Revised: 202006_002
SSA - Smart Current Sensor
Amplified Analog Output and Reinforced Isolation
27.9±0.3
SSA-BASE Mounting Fixture (Optional)
91.4±0.5
20.3±0.2
• For SSA-100 thru SSA-500 • Robust design • 5/16-18 Stainless Steel Hardware • Torque Nuts:
11-13 ft-lb (15-17.6 N-m) • UL 94-V0 rated materials
2X 4.8±0.2 63.5
42 MAX 20±1
Ordering Info: SSA-BASE
SSA-CABLE Power/Output Connection (Optional)
Differential Output
White
Analog (-)
Yellow Analog (+)
Black
Ground
Red +3.0v to 5.5v
• For all SSA models • Color coded 22ga wire • Two twisted pairs • 1 meter standard length
Ordering Info: SSA-CABLE-length Example: SSA-CABLE-1M
SSA shown with optional accessories
Riedon Inc.
© Riedon, Inc.
300 Cypress Avenue Alhambra CA 91801
(626) 284-9901
www.riedon.com
[email protected]
(626) 284-1704
Revised: 202006_002
SSA - Smart Current Sensor
Amplified Analog Output and Reinforced Isolation
Frequently Asked Questions
Q: How does the Riedon SSA compare with hall effect technology? A: When compared to hall effect technology, the SSA smart current sensor will offer:
• Immunity to stray magnetic fields • Unlike closed loop hall sensors, the SSA has a unipolar power supply requirement • No hysteresis • Low-noise resolution and offset performance allows accurate low-current measurements • Superior offset, gain and linearity performance over entire temperature range • Low noise • Higher bandwidth (300KHz vs 50KHz) • Lighter weight • Superior stability • No sensitivity to conductor positioning • No periodic calibration
Here is a document published by Texas Instruments that discusses some of the technical aspects: http://www.ti.com/lit/sbaa293
Q: Is there a derating for temperature?
A:
Power Derating
120
% Rated Current
100
80
60
40
20
0 0
25
50
75
100
105
125
150
Primary Conduc.