Type: LPRA/2 Phase Asymmetry, Failure, Sequence, Under Voltage plus Time Delay Terminal Compact 17.5mm DIN rail housing Protection Microprocessor based to IP20 True R.M.S. monitoring measuring phase to phase (3-wire) or phase to neutral (4-wire) voltages Selectable nominal voltages to suit most popular 3-wire or 4-wire supply voltages Monitors own supply and detects phase asymmetry/unbalance 1 Detects incorrect phase sequence, phase loss and neutral loss Adjustment for Asymmetry trip level Adjustment for Time delay DPDT relay output 5A Green LED indication for supply status Dims: to DIN Red LED indication for relay status 43880 1 Only when 4-wire monitoring selected W. 17.5mm FUNCTION DIAGRAM TECHNICAL SPECIFICATION Supply/monitoring voltage Un Asymm. % Monitored 3-wire monitoring 4-wire monitoring (L1, L2, L3, (N)): 3~ Supply Hyst. Phases reversed 380, 400, 415V AC 220, 230, 240V AC L1-L2 L1 Frequency range: 48 63Hz L2-L3 L2 Supply variation: 243- 540V AC (L>L) L3-L1 L3 Overvoltage category: III (IEC 60664) N Rated impulse withstand voltage: 4kV (1.2/50S) IEC 60664 Hyst. Power consumption (max.): 2.5VA Fixed Under trip Monitoring mode: Asymmetry Output Trip levels: LPRA 20816 18 Under 2 : Fixed 2% see below 15 Asymmetry: 2 22% 16 Measuring ranges: Nominal (Un) Under 2 28 3-wire (L>L) 380V 243V 25 26 400V 256V 415V 265V Td t t t t Td r r r 4-wire (L>N) 220V 140V 230V 147V 240V 153V INSTALLATION AND SETTING Hysteresis: 2% of trip level (factory set) Setting accuracy: 3% BEFORE INSTALLATION, ISOLATE THE SUPPLY. Repeat accuracy: 0.5% at constant conditions Connect the unit as required. The Connection Diagram below shows a typical installation, whereby the supply to Immunity from micro power cuts: <50ms a load is being monitored by the Phase monitoring relay. If a fault should occur (i.e. fuse blowing), the relay will Response time (t ): 50ms r de-energise and assuming control of the external Contactor, de-energise the Contactor as well. Time delay (t): 0.2 10s ( 5%) Note: actual delay (t) = adjustable delay + response time Only connect the Neutral if available and 4-wire monitoring is required. Power on delay (Td): 1s (worst case = Td x 2) Applying power. Reset time: 50 100ms Set the Nominal (Un) voltage selector to match that of the voltage being monitored. Power on indication: Green LED Set the Asymmetry % adjustment to maximum. Set the Delay (t) to minimum. Relay status indication: Red LED Apply power and the green Power supply LED will illuminate. The red LED will illuminate and relay Ambient temperature: -20 to +60C energise after the short Power on delay (Td). Relative humidity: +95% max. Refer to the troubleshooting table if the unit fails to operate correctly. Output (15, 16, 18 / 25, 26, 28): DPDT relay Output rating: AC1 250V 5A (1250VA) Setting the unit (with power applied). AC15 250V 2A Assuming all phases are perfectly balanced it should be possible to set the Asymmetry (%) adjustment to DC1 25V 5A (125W) minimum which will ensure that it will detect the smallest of changes in the phase voltages. However, if large Electrical life: 150,000 ops at rated load changes in phase voltages are likely, then the Asymmetry (%) setting should be increased. Dielectric voltage: 2kV AC (rms) IEC 60947-1 Rated impulse withstand voltage: 4kV (1.2/50S) IEC 60664 The formula used for calculating Asymmetry is as follows: Maximum deviation from Vave Housing: Orange flame retardant UL94 Asymmetry = x100% Weight: 90g Vave Mounting option: On to 35mm symmetric DIN rail to BS EN 60715 or direct ANSI/NEMA MG 1-2001 where V is the average of the three phases ave surface mounting via 2 x M3.5 or 4BA screws using the black Note that Phase asymmetry can also referred to as Phase unbalance clips provided on the rear of the unit. Set the Delay (t) as required. (Note that the delay is only effective should any phases exceed the set trip point. 2 Terminal conductor size 2 x 2.5mm solid or stranded nd However, if the supply drops below the 2 under voltage trip level, any set time delay is automatically cancelled Approvals: and the relays de-energise immediately). Conforms to IEC. CE, and RoHS Compliant. EMC: Troubleshooting. Immunity: EN 61000-6-2 Emissions: EN 61000-6-4 The table below shows the status of the unit during a particular fault condition. Note: L>L has the same meaning as phase to phase and L>N, the same as phase to neutral Supply fault Green LED Red LED Relay Phase or neutral missing LEDs flash alternately De-energised Phases reversed (no delay) Flashing Off De-energised Phase asymmetry trip point exceeded (during timing) On Flashing Energised for delay (t) Phase asymmetry trip point exceeded (after timing) On Off De-energised Phases < fixed under trip level 2 On Off De-energised CONNECTION DIAGRAM SETTING DETAILS DIMENSIONS 1. Power supply status (Green) 89 (exc. clips) LED 67.5 2. Relay output / Timing status 45 (Red) LED 3. Nominal (Un) voltage selector 4. Delay (t) adjustment 5. Asymmetry % trip adjustment Insert screwdriver to release clips Withdraw clips fully when surface mounting 92 (+/- 1mm) all dimensions in mm. Broyce Control Ltd., Pool Street, Wolverhampton, West Midlands WV2 4HN. England LPRA 2-1-A.DOCX XXXXX 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 users own risk. 29 49.5 66.5X-ON Electronics Largest Supplier of Electrical and Electronic Components Click to view similar products for Broyce Control manufacturer: Other Similar products are found below : LART 12-230V AC/DC LXCVR 230V LBVR/A 12-24VDC LMCCR-10A LESW 12-230V AC/DC