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HOME ⊙ Woodward ⊙ Woodward ESDR 4/4T current differential protection relay
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Woodward ESDR 4/4T current differential protection relay

来源: | 作者:FAN | 发布时间 :2025-09-05 | 157 次浏览: | Share:

Product Version Installation Method Current Specification Product Number (P/N)

ESDR 4 Front Panel Installation.../1 A LR20459 (ESDR401B)

Front panel installation.../5 A 8441-1010 (ESDR405B)

DIN rail installation.../1 A 8441-1105 (ESDR401M)

DIN rail installation.../5 A LR20590 (ESDR405M)

ESDR 4T Front Panel Installation.../1 A LR20021 (ESDR4T01B)

Front panel installation.../5 A 5448-897 (ESDR4T05B)

DIN rail installation.../1 A LR20616 (ESDR4T01M)

DIN rail installation.../5 A 8441-1047 (ESDR4T05M)

Optional accessories: Front panel version converted to DIN rail mounting rail clamp, P/N LR05188.

2. Installation and wiring

Installation requirements: Must comply with DIN 43700 standard hole size to ensure protection level (front IP42 should avoid direct liquid spray); DIN rail installation requires the use of specialized rail clamps to ensure stable fixation.

Wiring precautions: The current input should be distinguished on both sides of the protection area (such as the high and low voltage sides of the transformer), and the discrete input and relay output should be connected according to the Wiring Diagram to avoid polarity errors that may cause protection misoperation.

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