Broyce E-HLD/PM Level Monitor Relay
 







Combined Liquid Level and 3-Phase Monitoring Relay

Type E-HLD/PM
Preliminary Information

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Preliminary Information
Liquid Level and 3-Phase Monitoring Relay
Type E-HLD/PM

 

Type E-HLD/PM Key Features
Designed to control the level of conductive liquids and monitor a 3-phase, 3-wire supply.
415V Auxiliary supply.
Liquid level detection- Suitable for 1 or 2 level operation with fixed sensitivity.
3-Phase monitoring - Detects under voltage, phase loss and incorrect sequence.
Relay operates when 3-phase supply is healthy and both probes are covered.
SPDT relay output
LED indication of output relay status, 3-phase supply condition and Aux. supply.
Optional separate unit provides two output relays. One relay is controlled by the liquid level detection and the other relay by the 3-phase monitoring. (Order code: E-HLD/PM-2)
Terminal Protection to IP20. Width 70mm

 

Function Diagram
 
Connection Diagram
 
Mounting Details
 

 

Specifications E-HLD/PM Combined Liquid Level & 3-Phase Monitoring Relay

Supply Voltage Un: 415V AC 48-63Hz
Supply Variation: 85 to 110% of Un
Isolation: Over voltage CAT III (IEC 60664)
Rated impulse withstand Voltage: 4kV (1.2/50μS)
Power Consumption: ≈6kV @ 1.1 x Un supply
   
Supply/Monitored Voltage U: 300 to 500V AC 48 to 63Hz
   
3-Phase Monitoring:
Under voltage trip level:

Hysteresis:
Time Delay (t):

300 to 500V (user adjustable)
≥2%
≈IS (from phase loss), worst case 2 x t
Liquid Level Detection:
Operate Resistance:
Release Resistance:
Electrode Voltage:
Distance between probes and relay
:

≤28KΩ (Aux. supply @ Un)
≥55KΩ (Aux. supply @ Un)
≈24V AC (Aux. supply @ Un)
100 metres (max)
Ambient Temperature: -20°C to + 60°C
Relative Humidity: +95%
   
Output: SPDT Relay
Output Rating: AC1          250V AC 8A (2000VA)
  AC15        250V AC 5A (no), 3A (nc)
  DC1          25V DC 8A (200W)
Electrical Life: ≥150,000 ops at rated load
   
LED Indication:
Auxiliary Supply:
3-Phase Monitoring:
Output Relay:

Green LED
Red LED (illuminated in healthy state)
Red LED
Housing: Grey flame retardant Lexan UL94 VO
Weight: ≈290g
   
Mounting Option:
 
On to 35mm symmetric DIN rail to BS5584:1978
(EN50 002, DIN 46277-3)
Terminal Conductor Size: ≤2.5mm² stranded
≤4mm² solid
Approvals: Conforms to IEC 60664. CE Compliant.
   
Accessories: Single probe & holder
  Stainless Steel Probe
  Probe Extension Connector
  Probe separator
  Triple probe holder

 

 

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