JPH01131235U - - Google Patents

Info

Publication number

JPH01131235U

JPH01131235U JP2715788U JP2715788U JPH01131235U JP H01131235 U JPH01131235 U JP H01131235U JP 2715788 U JP2715788 U JP 2715788U JP 2715788 U JP2715788 U JP 2715788U JP H01131235 U JPH01131235 U JP H01131235U

Authority

JP

Japan

Prior art keywords

currents

transformer

output

relay device

ratio differential

Prior art date

1988-02-29

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 230000005856 abnormality Effects 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 2
• 238000012544 monitoring process Methods 0.000 description 1