Catalog 1308242 KILOVAC Issued 3-03 (PDF Rev. 6/07) WD series DIN Rail or Screw Mounted Protective Relays WD25 Paralleling (Synch Check) Relays WD2759 Over/undervoltage Relays WD32 Reverse Power Relays WD47 Phase Sequence Relays WD5051 Single- or Three-Phase Overcurrent Relays WD81OU Over/Underfrequency Relays File E58048 DIN EN50022-35 Users should thoroughly review the technical data before selecting a product part number. It is recommended that user also seek out the pertinent approvals les of the agencies/laboratories and review them to ensure the product meets the requirements for a given application. Overview Outline Dimensions The WD series offers several different models of protective relays in a common package that is suitable for either DIN rail or screw mounting. 16 X M3.5 These exible, multifunction devices offer user selectable voltages, sense currents and frequencies. Adjustable time delays are standard. This allows a single part number to be suitable for multiple applications, thereby reduc- ing inventory costs. 1.38 2.87 (35.0) (73.0) Specications common to all models Power Consumption: 2.5VA, maximum. Contact Ratings: 5 amps, resistive, at 120VAC. 5 amps, resistive, at 30VDC. Isolation from Control to Sense Inputs: 2,500VAC. Mechanical Life: 10 million operations. Shock: 10g. Vibration: 0.062 (1.57) double amplitude at 10-55 Hz. Terminals: M3.5 screws. 2 4.41 Maximum Wire Size: 2 x 24 AWG (2.5mm ) solid to DIN 46288 or 2 x 16 (112.0) 2 AWG (1.5mm ) stranded w/end sleeves. Operating Temperature Range: -40C to +60C. Storage Temperature Range: -55C to +85C. Operating Humidity (Max.): 90%, non-condensing. Enclosure: Plastic case (not sealed). 0.35 Mounting Options: Snap mounts on standard DIN rail (DIN-EN 50022-35) (9.0) or panel mounts with M4, M5, 8 or 10 screws. Weight: 14.4 oz. (400g) approximately. 2.95 (75.0) Installation and Maintenance Information M5 Installation: To mount the WD series protective relay on a DIN rail, hook 2.36 M4 (60.0) the top edge of the cutout on the base of the case over one edge of the DIN rail, then press the opposite side of the cutout containing the release clip over the opposite side of the DIN rail. To remove or reposition the re- lay, lever the release clip and move the relay as required. WD series relays 2.36 should be installed in a dry location where the ambient temperature will be (60.0) within the operating temperature range. 1.97 Maintenance: WD series protective relays are solid state devices that (50.0) require no maintenance. They are not designed to be serviced by the user. Consult KILOVAC customer service at 805-220-2023 if repairs should be necessary. Dimensions are shown for refer- Dimensions are in inches over Specications and availability www.tycoelectronics.com ence purposes only. (millimeters) unless otherwise subject to change. Technical support: 1308 specied. Refer to inside back cover.Catalog 1308242 KILOVAC Issued 3-03 (PDF Rev. 6/07) WD25 Paralleling Relays Function 25 ANSI/IEEE C37.90-1978 WD25 Calibration WD25 Operation The calibration marks on the faceplate are provided only as guides. Proper WD25 paralleling relays are used to ensure that two circuits are synchro- calibration requires using an accurate voltmeter. Use the following proce- nized. When voltage, phase relationship and frequency are within the dure to calibrate the WD25: selected synchronizing limits, the output relay will energize. The WD25 1. Remove the cover. paralleling relay allows for a generator to be brought online without dam- 2. Adjust the SYNC VOLTAGE control fully counterclockwise (CCW). Apply age or system disturbance. WD25 series with adead bu feature will nominal voltage to the LINE B (bus) sensing terminals. energize for a synchronized condition or anon lin generator,dead bu 3. Apply the maximum desired synchronization voltage to the LINE A (gen- condition. Thisdead bu feature allows the generator to energize a dead erator) terminals. This voltage should be in phase with LINE B (bus) volt- bus. Thedouble dead bu feature permits paralleling of two buses when: age and have the same frequency. (a) both the line voltages are equal and in phase, or (b) when either bus is 4. Slowly adjust the SYNC VOLTAGE control clockwise (CW) until the relay ho and the other bus isdead energizes. WD25 Specications Nominal Operating Range: 120, 208, 277 or 480 VAC, selectable. Maximum Sensing Range: 575VAC. Nominal Frequency Range: 40-400. Contact Form: 2 form C (DPDT). WD25 Controls Sense Voltage: Voltage (nominal) 120 208 277 480 Synch Voltage (% of nom.) 6 - 30% ( 4- 20 electrical degree) Dead Bus Voltage (% of nom.) 10 - 70% (Dead Bus) Control Voltage: Model WD25 -0X1 -0X2 -0X3 Input Voltage (VDC) 18 to 54 13.5 to 32 100 to 200 Input Voltage (VAC) 100 to 140 Ordering Information T ypical Part Number B WD 25 -00 2 1. Basic Series: WD = DIN mount Protective Relay. 2. Type: 25 = Paralleling Relay. WD25 Connections 3. Dead Bus: 00 = Double Dead Bus 01 = Single Dead Bus 02 = Generator to Generator 4. Control Voltage: 1 = 18 to 54VDC 2 = 13.5 to 32 VDC 3 = 100-200VDC or 100-140VAC. Our authorized distributor is more likely to stock these items. WD25-001 WD25-013 WD25 Typical Hookup NOTE: For single dead bus option, connect the gen- erator to 1 & 2 and the bus to 4 & 5. Dimensions are shown for refer- Dimensions are in inches over Specications and availability www.tycoelectronics.com ence purposes only. (millimeters) unless otherwise subject to change. Technical support: 1309 specied. Refer to inside back cover.