LDRT-3-A BROYCE | Alldatasheet

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Broyce Control Ltd., Pool Street, Wolverhampton, West Midlands WV2 4HN. England Tel: +44 (0) 1902 773746 Fax: +44 (0) 1902 420639 Email: sales@broycecontrol.com Web: www.broycecontrol.com The Information provided in this literature is believed to be accurate (subject to change without prior notice); however, use of such information shall be entirely at the user’s own risk. LDRT-3-A 2507 HS Code: 85364900 Country of Origin: UK Dims: to DIN 43880 W. 17.5mm INSTALLATION AND SETTING

  • BEFORE INSTALLATION, ISOLATE THE SUPPLY.
  • Connect the unit as required. The Connection Diagram below shows a typical installation, whereby the supply to a load is being monitored by the unit. If a fault should occur (i.e. fuse blowing), the relay will de-energise and assuming control of the external Contactor, de-energise the Contactor as well. Applying power.
  • Apply power and the green LED ➊ will illuminate. The relay will remain de-energised.
  • Assuming the supply voltage is above the fixed trip level (plus hysteresis) the delay period (t) will commence and the red LED ➋ will flash during this period.
  • After the set delay has elapsed, the relay will energise and red LED ➋ remain on. Setting the unit
  • Set the “Delay (t)” ➌ adjustment as required. Troubleshooting. The table below shows the status of the unit during a particular condition. Supply status Green LED ➊ Red LED ➋ Relay No supply Off Off De-energised Under voltage condition On Off De-energised Following supply loss or voltage returning > 80% of Un On Flashing De-energised for delay period (t) TECHNICAL SPECIFICATION Supply/monitoring voltage Un^ (A1, A2): 115, 230V AC Frequency range: 48 – 63Hz Supply variation: 75 – 115% Un Overvoltage category: III (IEC 60664) Rated impulse withstand voltage: 2.5kV (115V), 4kV (1.2/50 µ S) IEC 60664 Power consumption (max.): 11VA @ 1.15 x Un Monitoring mode: Under voltage Trip levels: Under: 80% of Un (Fixed) Trip accuracy: ± 5% Hysteresis: ≈ 5% of fixed trip level (factory set) Time delay (t): 2 – 60s (± 5%) Setting accuracy: ± 5% Repeat accuracy: ± 0.5% at constant conditions Reset time (t r): ≈ 100ms LED indication: Green LED (Power supply) Red LED (Relay/timing status) Ambient temperature: -20 to +60 °C Relative humidity: +95% max. Output (15, 16, 18) : SPDT relay Output rating: AC1 250V 8A (2000VA) AC15 250V 5A (no), 3A (nc) DC1 25V 8A (200W) Electrical life: ≥ 150,000 ops at rated load Dielectric voltage: 2kV AC (rms) IEC 60947-1 Rated impulse withstand voltage: 4kV (1.2/50 µ S) IEC 60664 Housing: Grey flame retardant UL94 Weight: 61g Mounting option: On to 35mm symmetric DIN rail to BS EN 60715 or direct surface mounting via 2 x M3.5 or 4BA screws using the black clips provided on the rear of the unit. Terminal conductor size ≤ 2 x 2.5mm 2 solid or stranded Terminal screw: M3 (Designed for use with PZ1 “pozi-driver”) Tightening torque: 0.6Nm Max. Approvals: Conforms to IEC. CE, UKCA and RoHS Compliant. EMC: Immunity: EN 61000-6-2 Emissions: EN 61000-6-4 FUNCTION DIAGRAM Monitored Supply Under trip Hyst. A1- A2 LDRT -0121 t Output tr t t Terminal Protection to IP20 DIMENSIONS Withdraw clips fully when surface mounting 92 (+/- 1mm) 67.5 49.5 66.5 89 (exc. clips) Insert screwdriver to release clips all dimensions in mm.  Detects voltage dips and momentary loss/interruption of supply  “Delay on operate” functionality provides an adjustable delay period before the relay energises  Fixed Under voltage trip level (80% of Un)  Adjustable time delay (2 – 60s)  Fixed reset time (100ms)  SPDT relay output 8A  Green LED indication for supply status  Red LED indication for timing and relay status  Compact 17.5mm DIN rail housing  Ideal for water authorities where remote pumping stations and unmanned control systems are in use SETTING DETAILS 1. Supply status (Green) LED 2. Relay output/timing status (Red) LED 3. “Delay (t)” adjustment CONNECTION DIAGRAM 16 18 R Contactor Local Fuse Board N To Load Supply / Monitored Voltage 18 16 Type: LDRT Mains Restoration “Brown Out” Auto Restart Timer (Delay On Operate) ^ Please state supply voltage when ordering