Protective Relays 4 1 4 /2 7 4 /8 Protective Relays 1800 Series Product Specifications Product Facts #6 - 32 STUDS Sensing Voltage — 120 V, 230 V, 6 PLACES n Function 25 277 V, 380 V, 460 V, 575 V, & 415 V n ANSI/IEEE C37.90-1978 Line Frequency — 50-500 Hz Pick-Up Adjustment — n UL File No. E58048 R External adjustment for field sensing n CSA File No. LR61158 of 10-30% of nominal input voltage. R (Vertical voltage differential of 6 to 18 electrical degrees). 3 Application Time Delay — Fixed @ 60 millisec- These relays are designed onds is provided to assure that the fre- quencies of both input lines are for automatic paralleling sufficiently close to permit paralleling (synchronizing) of genera- within the preset window. tors. The relays sense the Output Contacts — phase angle displacement One set N.O., one set N.C. and the amplitude differ- 5 amp resistive at 120 VAC or 28 VDC ence between two voltages and permit paralleling only when both voltages are equal and in phase. A short time delay is provided to assure that the frequencies are essentially the same at 11 /64" DIA. the moment of paralleling. 4 MTG. HOLES The basic series is designed 11 Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm. to parallel two or more energized AC generators. The “Dead Bus” type A. 3 Phase, 4 Wire System provides paralleling of AC Connect phase "A" of LINE 1 to terminal 1 generators to the main bus. Connect phase "A" of LINE 2 to terminal 3 They permit electrical con- Connect the neutrals to terminals 2 & 4 nection of an energized gen- B. 3 Phase, 3 Wire or 1 Phase, 2 Wire System erator to an un-energized Connect phase "A" of LINE 1 to terminal 1 Connect phase "B" of LINE 1 to terminal 2 line (Dead Bus). If the bus Connect phase "A" of LINE 2 to terminal 3 is energized, connection of Connect phase "B" of LINE 2 to terminal 4 the generator to the bus is permitted only when both are synchronized. Selection Guide (Typical Applications) Sensing Series 1800* Series 1800DB** Series 1800DDB*** Notes Voltage Generator to Generator Generator to Bus Bus to Bus *Permits paralleling of two genera- tors only when they are “on-line” 120 Volts 1810X 1810DBX 1810DDBX and their voltages are equal and 230 Volts 1820X 1820DBX 1820DDBX in phase (synchronized) 380 Volts 1830X 1830DBX 1830DDBX **Normally used to permit parallel- 460 Volts 1840X 1840DBX 1840DDBX ing of a generator to a bus when: (a) both line voltages are equal 575 Volts 1850X 1850DBX 1850DDBX and in phase, or: (b) when the 415 Volts 1860X 1860DBX 1860DDBX generator is “on-line” and the bus 277 Volts 1870X 1870DBX 1870DDBX is “dead” ***Permits paralleling of two power lines (buses) when: (a) both line voltages are equal and in phase, Series 1800 Series 1800DB Series 1800DDB Condition or: (b) when either bus is “hot” Contacts Contacts Contacts and the other bus is “dead” Not Energized Synch. N.C. N.O. N.C. N.O. N.C. N.O. Energized Line 1 X 1 Open Close Open Close Open Close Line 2 X Yes Line 1 X No Output Contact Options — 2 Close Open Close Open Close Open Line 2 X No 1. Two Form A. (Add -A to Model Line 1 X Number) 3 Close Open Open Close Open Close Line 2 X 2. Two Form B. (Add -B to Model Line 1 X Number) 4 Close Open Close Open Close Open Line 2 X Consult factory for additional Line 1 X 5 Close Open Close Open Open Close models. Line 2 X 11–27 Catalog 5-1773450-5 Dimensions are shown for Dimensions are in millimeters USA: +1 800 522 6752 For additional support numbers Revised 3-13 reference purposes only. unless otherwise specified. Asia Pacific: +86 0 400 820 6015 please visit www.te.com Specifications subject UK: +44 800 267 666 www.te.com to change. 7 3 /8 5 4 /8