Model 777-KW/HP - SymCom

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<strong>Model</strong> 50R-400-ALTThe <strong>Model</strong> 50R-400-ALTalternating relays are used to alternate between two loads, most commonly in duplexpumping and compressor applications to balance the runtime of both loads.When used in single float applications, the alternating relay changes state after thefloat switch opens*, forcing the other pump to run the next time the float closes.When used in dual float applications, the alternating relay will allow both pumps torun simultaneously when the lead and lag floats are both closed.Part No. 50R-400-ALTAn adjustment knob provides the option to force one pump to run every time thefloat switch is closed.This is helpful when one pump has been removed for repair orfor test purposes.A built-in debounce feature prevents the alternating relay from changing state if thefloat contact bounces momentarily.See Appendix A, Figure 42 for a typical wiring diagram.* The alternating relay will not switch states while current is flowing. Switching will only occur after current hasbeen sensed, followed by loss of current for the duration of the debounce time delay.Features• Alternates between two loads• Solid-state reliability• Debounce time delay• Compatible with single or dual float applicationsSpecificationsSupply Voltage • • • • • • • • • • • • • • • • 380-480VACSupply Current • • • • • • • • • • • • • • • 40mAControl Input Impedance (min) • • • 1MΩContact Rating • • • • • • • • • • • • • • • 470VA @ 600VACGeneral Purpose Relay Rating • • • • 10ADebounce Time Delay • • • • • • • • • • 1 secondPower Consumption • • • • • • • • • • • 5 Watts (max.)38 www.symcom.com • tel: 605-348-5580 800-843-8848 • fax: 605-348-5685
Intrinsically-Safe RelaysAn Intrinsically-Safe Switch is an isolated UL913 listed device used to interface between hazardous and non-hazardous areas.The inputcircuitry is designed to never supply excessive energy thus greatly reducing the likelihood of a spark. Provides intrinsically-safe circuits inthe following locations: Division I and II, Class I, Groups A, B, C, D; Class II, Groups E, F, G and Class III hazardous locations.Features• Compact design• Finger-safe terminals• DIN rail or surface mountable• LED contact state indicator(s)• Isolated output relayProduct Selection MatrixMODELISS-100ISS-101ISS-102AA-DCSISS-105-ISOISS-105-ISO-FMODELISS-102C-M-LCISS-102CCI-M-MCUL 9131 Channel2 Channel5 ChannelReverse Logic5 Amp General Purpose7 Amp General Purpose8 Amp General PurposeDin Rail MountableSurface MountableOctal BaseOutput Status Lights2 Inputs2 OutputsLatching LogicInverted Logic5 Amp General PurposeDIN Rail MountableSurface Mountable100K Ohm Fixed4.7-100K Ohm AdjustableIsolated RelayMSHA EvaluatedProbe Resistance 10k OhmsProbe Resistance 100k Ohmswww.symcom.com • tel: 605-348-5580 800-843-8848 • fax: 605-348-568539
Page 3 and 4: Table of ContentsMotor ProtectionMo
Page 5 and 6: 777 Product LineProduct Selection M
Page 7 and 8: 777 Product LineSpecificationsElect
Page 9 and 10: Communication ModulesThe RS485MS-2W
Page 11 and 12: Remote Monitoring DevicesAvailable
Page 13 and 14: Solutions SoftwareSolutions is a so
Page 15 and 16: 3-Phase Voltage MonitorsProduct Sel
Page 17 and 18: Model 102AThe Model 102Ais an auto-
Page 19: Model 201A-AUThe Model 201A-AUis an
Page 24 and 25: Model 455The Model 4553-phase volta
Page 28 and 29: Model 601The Model 601is a fully-pr
Page 30 and 31: Model 50RThe Model 50Rsingle-phase
Page 32 and 33: Model 202-200-SPThe Model 202-200-S
Page 34 and 35: Three-Phase Current MonitorsCurrent
Page 36: Model 520CPThe Model 520CPis a full
Page 39: Alternating RelaysProduct Selection
Page 43 and 44: Model ISS-102The ISS-102SymCom’s
Page 45 and 46: Pump ControllersPump Controllers ar
Page 47 and 48: Model PC-105The PC-105is a five-cha
Page 49 and 50: Model 460-15-100-SLDThe Model 460-1
Page 51 and 52: Three-Phase PumpSaversMore than jus
Page 53 and 54: Model 777-KW/HPSpecificationsElectr
Page 55 and 56: Model 777-AccuPowerThe Model 777-Ac
Page 57 and 58: 77C-KW/HPThe Model 77C-KW/HPhas imp
Page 59 and 60: 111 & 231-INSIDER-PModels 111-Insid
Page 61 and 62: Models 233-P & 111The Model 233-P a
Page 63 and 64: Load SensorsSymCom’s load sensors
Page 65 and 66: Model LSR-24The Model LSR-XXXload s
Page 67 and 68: Model LSRXThe Model LSRXis an AC cu
Page 69 and 70: Current TransformersCurrent Transfo
Page 71 and 72: Auxiliary ProductsInformer IR Kit (
Page 73 and 74: Enclosure Dimensions777, 77C, 6010.
Page 75 and 76: Enclosure DimensionsALT, 201, ISS-1
Page 77 and 78: Enclosure DimensionsLSRX.7218.22.50
Page 79 and 80: LOVLOVLOVIND. CONT. EQ.LISTEDIND. C
Page 81 and 82: Appendix ATYPICAL WIRING DIAGRAM FO
Page 83: Appendix AINPUT POWERL1L2L3MMMOLOLO
Page 86 and 87: Appendix ATYPICAL WIRING DIAGRAM FO
Page 88: www.SymCom.com... your electronic c

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