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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) APPLICATION No: 850/CHE/2006A
(22) Date of filing of Application:15/05/2006 (43) Publication Date: 09/06/2006
(54) Title of the invention:
DEVICE AND METHOD FOR
PROTECTION OF AGRICULTURE
FIELD WATER PUMP-MOTOR SETS.
(51)International classification:F 04 B 39/00
(31) Priority Document No.
(32) Priority Date:
(33) Name of priority country:
(87) WIPO No. :
(61) Patent of addition to
Application No. :
Filed on:
(62) Divisional to
Applcation No.:
Filed on:
(71) Name of Applicant
BONTHU VENKATESWARA RAO,
Address of Applicant:
4-29/2,FEROZUDA,,
HYDERABAD,500 011,,
ANDHRA PRADESH,,
INDIA.
(72) Name of the Inventor(s):
BONTHU VENKATESWARA RAO,
(57)Abstract
The device and method protects 3 phase agriculture field water pump sets simultaneously from primary and secondary
phase failures and no delivery water / dry run condition .Direct detectors are used to sense the three failure states.
Instant functional test simulation switches and indicators are provided to the controller. The controller can be directly
coupled to the motor starter and the starter solenoid is provided with a line voltage booster to avoid chattering under
low line voltage operation. Delay restart, automatic operational Repetition, a selector for hold / continue repetition
and bypasses for dry run and total control operations are provided on controller. The operations are processed through
a digital program.
The Patent Office Journal 09/06/2006 10756