Phase loss Electronic Overload Relay Motor protection relays WDB-1FMT
Features
■ Separate structure, LED part panel mounted and CT part screw fixing
■ Built-in LED and keypad afford a precise,digital setting
■ Three-phase monitoring of short-circuit, locked-rotor,overcurrent, undervurrent, phase loss, phase unbalance,overvoltage,undervoltage
■ Powered by the measuring circuit
■ Earth fault (should couple with ZCT)
■ Fault recording
■ RS-485 communication port (optional)
■ 4-20 mA analog output (optional)
■ 2 C/O output contacts, one for trip,one for alert
Applications
■ Pumps
■ Fans
■ Refrigeration Units
■ Blowers
■ Motors
■ Compressors
■ Lifts,Elevators
■ Cranes
■ Mining excavators and conveyors
Technical data
| Power supply voltage | 220VAC,380VAC |
| Operating voltage range | 220VAC:85-264V,380VAC:200-500V |
| Operating voltage frequency | 50/60Hz |
| Operating current range | 1-10A,5-50A,10-100A,20-200A
80-400A,400-600A,600-800A |
| Protective functions | short-circuit, locked-rotor, overcurrent,
undervurrent, phase loss,
phase unbalance,
overvoltage,undervoltage, earth fault |
| Optional functions | RS-485 communication port
4-20 mA analog output |
| RS-485 protocol | Modbus |
| Indicators | LED display,2LEDs indicating trip, alert |
| Output type | 1 C/O for trip,1 C/O for alert |
| Contact capacity | 3A 380VAC/30VDC (resistive load) |
| Fault records | last 10 times |
| Degree of protection | IP 20 |
| Working conditions | -25 ~65 , 85%RH,non-condensing |
| Mechanical durability | 1000000 cycles |
| Dielectric strength | >2kVAC 1min |
| Weight | 680g |
| Dimensions (H x W x D) | WDB-1F/1F2: 101X54X77mm(LED part) |
| Mounting | WDB-1F: panel mounted and screw fixing |
OUR SERVICE
1. Factory sale
2. Quick response
3. 24 hours phone call is available, feel free to contact us.
4. All goods produced by ourselves, we provide one-stop services from designing, printing to processing. Customers can provide the design according to your request and samples making, also we can advise how to make the products according to customers' target prices.
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