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Innopower invests to build its electrical and mechanical laboratories to test the electrical and physical performance of superconductor wire and cable samples.
We began to purchase and fabricate experiment instruments and equipment in May, 2002. Now we have the ability to test critical superconducting transition temperature, critical current density, superconductor performance under magnetic field, the influence of thermal-cycling on superconductors, multi-layer cable's AC loss, the influence of mechanical distortion on superconductors, cable current distribution and cable current AC loss. Now we will emphasize on improving testing means and advancing test atomization level.

The currently ongoing experiments:
1. HTS cable current distribution.
2. HTS cable AC loss.
3. The influence of mechanical stress on Ic of superconductor wire.
4. Long tape superconductor's physical characteristic under constant electromagnetic field.

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Instruments and equipments list

Name
Model
Manufacturer
Lock-in Amplifier SR850 Stanford Research Systems, Inc.
6.5 Multimeter 2000 Keithley Instruments, Inc.
X-Y Recording nstrument 3086-22 Sichuan Instruments Factory
Temperature Controller 331S Lake Shove Cryostronics, Inc.
Thermostat   Homemade
Positive-negative Circuit Scan Power   Homemade
Clamp Pole (measure Ic)   Homemade
Computer with GPIB Port    
Nano Volt Meter 34420A Agilent Technologies, Inc.
3000GS Electromagnet   Homemade
Gauss Meter CT3 ShangHai Fourth Electric Instrument Works

 



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figure 1 Engineers discussing and testing their design.
figure 2 Testing superconductor cable sample.
figure 3 The Nano Volt meter and Lock-in Amplifier used for measuring Ic and Jc.
figure 4 Dewar used for testing cable samples.
figure 5 Homemade Rogowski coils.
figure 6 3000GS Electromagnet attached a thermostat.

 

 

Test range and precision

Voltage:
DC 0-750V 8nV
AC 0-750V 2nV (frequency< 1000Hz)

Current:
DC 0-10A 10nA
AC 0-4000A 200mA (frequency 45-65Hz)


Temperature:
30-300K

Current source:
DC 100A
AC 4000A

Refrigeration temperature:
63K