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Paralleling Relays
WILMAR Protective Relays 1800 Series Function: 25
ANSI/IEEE C37.90-1978
UL file No. E58048
CSA file No. LR61158
#6 - 32 STUDS
6 PLACES
Application:
These relays are designed for automatic paralleling
(synchronizing) of generators. The relays sense the
phase angle displacement and the amplitude differ-
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 the moment
of paralleling. The basic series is designed to parallel
3
two or more energized AC generators. The Dead
Bus type provides paralleling of AC generators to
the main bus. They permit electrical connection of an
energized generator to an un-energized line (Dead
Bus). If the bus is energized, connection of the
generator to the bus is permitted only when both are
synchronized.
11
/64" DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
A. 3 Phase, 4 Wire System
PRODUCT SPECIFICATIONS
Connect phase of LINE 1 to terminal 1
Part Number 1800 Series
Connect phase of LINE 2 to terminal 3
Sensing Voltage ............................. 120 V, 230 V, 277 V, 380 V, 460 V, 575 V, & 415 V
Connect the neutrals to terminals 2 & 4
Line Frequency ............................... 50-500 Hz
B. 3 Phase, 3 Wire or 1 Phase, 2 Wire System
Pick-Up Adjustment ....................... External adjustment for field sensing of 10-30% of
Connect phase of LINE 1 to terminal 1
nominal input voltage. (Vertical voltage differential of 6
Connect phase of LINE 1 to terminal 2
to 18 electrical degrees).
Connect phase of LINE 2 to terminal 3
Connect phase of LINE 2 to terminal 4
Time Delay ..................................... Fixed @ 60 milliseconds is provided to assure that the
frequencies of both input lines are sufficiently close to
Consult factory for additional models and options.
permit paralleling within the preset window.
Output Contacts ............................. One set N.O., one set N.C.
5 amp resistive at 120 VAC or 28 VDC
36 Tyco Electronics / www.tycoelectronics.com / Factory Direct Technical Support: 800-253-4560, ext. 2023 (U.S., Canada, Mexico) or 805-220-2020, ext. 2023 (International)
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Function:
Selection Guide
(Typical Applications)
S0ensing Voltage Series 180 Series 1800DB Series 1800DDB
GrGGGGreeeeennnnneeeeerrrrraaaaatttttooooorrrrr tttttooooo GGGGGeeeeennnnneeeeerrrrraaaaatttttooooorrr GsGGGGseeeeennnnneeeeerrrrraaaaatttttooooorrrrr tttttooooo BBBBBuuuuusss BsBBBBsuuuuusssss tttttooooo BBBBBuuuuusss
Permits paralleling of two generators Normally used to permit Permits paralleling of two power
only when they areon-lin and paralleling of a generator to a lines (buses) when: (a) both line
their voltages are equal and in phase bus when: (a) both line voltages are equal and in phase, or:
(synchronized) voltages are equal and in phase, (b) when either bus isho and the
or: (b) when the generator is other bus isdeaon-lin and the bus isdea
1X20 Volts 1X810 1X810DB 1810DDB
2X30 Volts 1X820 1X820DB 1820DDB
3X80 Volts 1X830 1X830DB 1830DDB
4X60 Volts 1X840 1X840DB 1840DDB
5X75 Volts 1X850 1X850DB 1850DDB
4X15 Volts 1X860 1X860DB 1860DDB
2X77 Volts 1X870 1X870DB 1870DDB
C0ondition Series 180 Series 1800DB Series 1800DDB
CsCCCCsooooonnnnntttttaaaaaccccctttttsss CsCCCCsooooonnnnntttttaaaaaccccctttttsss CsCCCCsooooonnnnntttttaaaaaccccctttttsss
Not
Energized S.ynch.N..C N..O N..C N..O N..C N.O
EdEEEdnnnneeeerrrrggggiiiizzzzeeeedd
Energized
LXine 1
1 OepenCnlos Oepe Cnlos Oepe Clos
LXine 2 Yes
LXine 1 No
2 CnloseOepe Cnlos Oepe Cnlos Ope
LXine 2 No
LXine 1
3 CnloseOnpe Oepe Cnlos Oepe Clos
LXine 2
LXine 1
4 CnloseOepe Cnlos Oepe Cnlos Ope
LXine 2
LXine 1
5 CnloseOepe Cnlos Onpe Oepe Clos
LXine 2
Output Contact Options: 1. Two Form A. (Add -A to Model Number)
2. Two Form B. (Add -B to Model Number)
Tyco Electronics / www.tycoelectronics.com / Factory Direct Technical Support: 800-253-4560, ext. 2023 (U.S., Canada, Mexico) or 805-220-2020, ext. 2023 (International) 37