Monitoring relay for monitoring 3-phase voltages of 350...650 V AC, u - PHOENIX CONTACT - EMD-FL-3V-500 - 2867979 View larger
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Monitoring relay for monitoring 3-phase voltages of 350...650 V AC, u - PHOENIX CONTACT - EMD-FL-3V-500 - 2867979





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Monitoring relay for monitoring 3-phase voltages of 350...650 V AC, undervoltage, window, phase sequence, phase failure, asymmetry, supply voltage can be selected using power module, 2 PDTs

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Price: $263.63
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Product description

Increasingly higher demands are being placed on safety and system availability – across all sectors. Processes are becoming more and more complex, not only in mechanical engineering and the chemical industry, but also in plant and automation technology. Demands on power engineering are also increasing constantly.

Error-free and therefore cost-effective operation can only be achieved through continuous monitoring of important network and system parameters. Electronic monitoring relays in the EMD series are available for a wide range of monitoring tasks to avoid the consequences of errors or to keep them within limits.

The operating states are indicated using colored LEDs, errors that may occur can be sent to a control system via a floating contact or can shut down a part of the system. Some device versions are equipped with startup and response delays in order to briefly tolerate measured values outside the set monitoring range.


Width45 mm
Height90 mm
Depth113 mm

Ambient conditions

Ambient temperature (operation)-25 °C ... 55 °C
-25 °C ... 40 °C (corresponds to UL 508)
Ambient temperature (storage/transport)-25 °C ... 70 °C

Input data

Nominal input voltage UN3 ~ 500 V
Maximum temperature coefficient< 0.1 %/K
FunctionUndervoltage, window, asymmetry, phase sequence, phase failure
Min. setting range-30 % ... 20 % (From UN)
Max. setting range-20 % ... 30 % (From UN)
Min setting range of the voltage threshold value350 V AC ... 600 V AC
Max. setting range of the voltage threshold value400 V AC ... 650 V AC
Setting range for response delay0.1 s ... 10 s
Basic accuracy± 5 % (of scale end value)
Setting accuracy≤ 5 % (of scale end value)
Repeat accuracy≤ 2 %
Asymmetry5 % ... 25% / OFF
Recovery time500 ms

Contact side

Contact type2 floating PDT contacts
Maximum switching voltage250 V AC (in acc. with IEC 60664-1)
Interrupting rating (ohmic load) max.750 VA (3 A/250 V AC, module aligned, ≤ 5 mm spacing)
1250 VA (5 A/250 V AC, module not aligned, ≥ 5 mm spacing)
Output fuse5 A (fast-blow)

Power supply

Supply voltage range110 V AC ... 500 V AC (see Power modules)


Mechanical service lifeApprox. 2 x 107 cycles
Operating mode100% operating factor
Mounting positionany
Assembly instructionson standard DIN rail NS 35 in accordance with EN 60715
Electromagnetic compatibilityConformance with EMC Directive 2004/108/EC
Overvoltage categoryIII, basic insulation (as per EN 50178)
Housing insulation materialPolyamide PA, self-extinguishing
Rated insulation voltage600 V (According to EN 50178)
UL, USA / CanadaUL/C-UL listed UL 508

Connection data

Conductor cross section flexible min.0.25 mm²
Conductor cross section flexible max.2.5 mm²
Conductor cross section solid min.0.5 mm²
Conductor cross section solid max.2.5 mm²
Conductor cross section AWG min.20
Conductor cross section AWG max.14
Stripping length8 mm
Connection methodScrew connection

PDF of Monitoring relay for monitoring 3-phase voltages of 350...650 V AC, u - PHOENIX CONTACT - EMD-FL-3V-500 - 2867979

PHOENIX CONTACT-2867979-EMD-FL-3V-500English66 KbytesPHOENIX CONTACT-2867979-EMD-FL-3V-500

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