22F-A011N103

22F-A011N103

由于勵磁涌流幅值很大且僅流經變壓器電源側，將引起變壓器縱差動保護產生很大的差流，導致差動保護誤動作跳閘。因此，在勵磁涌流情況下采取有效措施閉鎖差動保護，防止誤動。

以常見的二次諧波制動為例，講解一下保護裝置是如何防止勵磁涌流引起的誤動的。二次諧波制動的方法：二次諧波制動是根據勵磁涌流中含有大量二次諧波分量的特點，當檢測到差電流中二次諧波含量大于整定值時就將差動繼電器閉鎖，以防止勵磁涌流引起的誤動。

22F-A011N103

ALLEN BRADLEY 1771-ES B 1771ES B SERVO EXPANDER MODULE

ALLEN BRADLEY SERVO MOTOR F-4030-Q-H04AA NIB

Allen-Bradley AC Servo Motor 3000rpm MPL-A4540F-MJ24?AA

Allen Bradley N-2304-1-F00AA | AC Servo Motor 

Allen Bradley 1394-SJT10-T-RL Servo Turbo 1394SJT10TRL

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Allen Bradley MPL-A320P-HH22A?A | AC Servo Motor *NNB*

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Allen Bradley AC Servo Motor N-3412-2-H00AA & Gearhead

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ALLEN BRADLEY AC SERVO MOTOR 1326AB-A1G-11, 122285

Reliance Allen-Bradley Servo Drive Ultra 3000 9101-1767

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ALLEN BRADLEY AC SERVO MOTOR 1326AB-B410G-21?-K4, 155291

ALLEN-BRADLEY ULTRA SERIES SERVO DRIVE 1398-DDM-009

ALLEN BRADLEY AC SERVO MOTOR 1326AB-B520E-21?-K5L

ALLEN BRADLEY AC SERVO MOTOR 1326AB-B520E-21?-K5L

ALLEN BRADLEY 1326AB-B720E-21?-L AC SERVO MOTOR

Allen Bradley AC Servo Motor, 1326AB-A2E-11-A?4 WARRANTY

Allen Bradley 1394 Servo Drive Axis Module 5 KW

Allen Bradley Servo Motor, # 1326DP-S4C-X006 WARRANTY

NEW Allen Bradley 1394-SJT05-A /A 1394SJT05A Servo Cntr

ALLEN BRADLEY SERVO MOTOR MPL-B660F-SJ22A?A

ALLEN BRADLEY SERVO DRIVE 2098-1PD-HV050

Allen Bradley MPL-A420P-MK22A?A | AC Servo Motor *NNB*

AB Allen Bradley 1326-CEU-100 Servo Cable 1326CEU100

1394 Allen Bradley Servo Module

Allen-Bradley Servo Feedback Cable 60FT ! NEW !

Allen Bradley AC Servo Motor 1326AB-B740E-21?-L WARRANTY

Allen Bradley Servo Module 1394-SJT10-T-RL Nice Used

Allen Bradley 1398-DDM-005 Servo Drive Controller

ALLEN BRADLEY AC SERVO MOTOR 1326AB-B430E-21?-L

ALLEN BRADLEY MPL-B4540F-SJ22?AA Servo motor NEW 

Allen Bradley Servo Control 1394-SJT22-C-RL

ALLEN BRADLEY 1771-ES Servo Expander Module

Allen-Bradley 1326AB-B3E-11 Servo Motor

ALLEN BRADLEY F-4030-Q-H04AA SERVO MOTOR BRUSHLESS NEW