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قطع غيار أصلية للأتمتة | توصيل سريع عالمي | ضمان لمدة 12 شهرًا — [احصل على عرض سعر]
The Woodward MRI3I5E5DM, also cataloged as the MRI3 Digital Protection Relay, operates as a dedicated hardware component for current monitoring and overcurrent protection within electrical power distribution systems.
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The Woodward MRI3I5E5DM, also cataloged as the MRI3 Digital Protection Relay, operates as a dedicated hardware component for current monitoring and overcurrent protection within electrical power distribution systems.
| Parameter | Specification |
|---|---|
| Model | MRI3I5E5DM |
| Brand | Woodward |
| Origin | USA |
| Weight | 0.8 kg |
| Dimensions | 144 mm x 72 mm x 130 mm |
| Operating Temp | -20 to +70 deg C |
| Power Consumption | 24-270 VDC or 24-230 VAC auxiliary range |
| Storage Temperature | -40 to +85 deg C |
| Relative Humidity | Up to 95%, non-condensing |
| Rated Current | 1 A or 5 A (selectable) |
| Rated Frequency | 50/60 Hz |
| Overcurrent Setting Range | 0.5-20 x In |
| Time Delay Range | 0.1-20 s |
| Earth Fault Current Range | 0.01-2 x In |
| Output Contacts | 4 changeover contacts (250 VAC, 8 A rating) |
The Woodward MRI3I5E5DM utilizes high-speed digital signal processing to analyze selectable 1 A or 5 A current inputs and deliver deterministic actuator loop feedback response during fault conditions. By evaluating phase overcurrent levels across a 0.5-20 x In range and earth fault thresholds from 0.01-2 x In, the internal logic triggers its 4 changeover output contacts within user-defined time delays (0.1-20 s). This closed-loop monitoring ensures rapid trip signal generation to isolate upstream breakers and safeguard electrical distribution hardware.
Q: What auxiliary power supply options are compatible with the Woodward MRI3I5E5DM?
A: The relay accepts a wide-range auxiliary voltage supply operating from 24 to 270 VDC or 24 to 230 VAC.
Q: What are the output contact ratings and relay configurations on this module?
A: The module is equipped with 4 changeover contacts rated for maximum switching capacities of 250 VAC at 8 A.
Q: What are the current input sensing ranges for phase overcurrent and earth fault monitoring?
A: The unit features selectable rated inputs of 1 A or 5 A, supporting overcurrent pickup settings from 0.5 to 20 x In and earth fault settings from 0.01 to 2 x In.
