Courtesy of NationalSwitchgear.com
Страница 1: ...ish the continuous current rating of each circuit breaker 4 0 8 8 4 1 9 4 2 9 4 3 9 4 4 The Digitrip RMS 600 Trip Unit is completely self contained and when the circuit breaker is closed requires no e...
Страница 2: ...in U S A 3 N Lithium Battery Only Long Delay Setting Long Delay Time 4 JSec 1 At 6 ln Long Delay Time rrisec 1 At 6 ln Long Delay Setting rn n 2 2 0 0 0 0 Short Delay Pickup Breaker Trips In 6T Test A...
Страница 3: ...rotection LSI Nameplate Phases kA A g Values B g lc g IG g Phases kA lA g B g 1C g IG g u Westinghouse Digital Protection Digitrip RMS 600 Westinghouse Digital Protection Oigitrip RMS 600 Values Cell...
Страница 4: ...RAM or Read Write Memory This data which is used to calculate true RMS current values is repeatedly compared with the pre set protection function pick up settings and other operating data stored in th...
Страница 5: ...n Figs 3 and 5 is provided to perform this function In addition when the Digitrip RMS 600 Trip Unit is not equipped with an adjustable instantaneous setting i e types LS or LSG a high set non adjustab...
Страница 6: ...ill indicate the value of current in kA at the time of the trip initiation by the protection function involved Trip action initiated as result of fault exceeding trip setting Examine breaker to insure...
Страница 7: ...rip Reset push button see Fig 1 All coded messages and current values in the display window the cause of trip LED and the signal relay in the Power Relay module will turn Off 5 Notice In the case of v...
Страница 8: ...eclose the circuit breaker as required 6 3 The Short Circuit Relay in the Power Relay Module see Figs 3 and 4 will operate to close a contact for a remote Short Circuit Alarm 3 6 1 3 3 Other Cases Sim...
Страница 9: ...200 1200 750 875 1000 2500 625 As illustrated in Fig 6 4 two different curve configurations are possible i e flat or l2t response The configuration selected will be a factor of the type of selective c...
Страница 10: ...NDED Note Since time current settings are based on desired system coordination and protection schemes the protection settings selected and preset under Section 4 0 above should not be altered during o...
Страница 11: ...0 of the plug ampere rating Trip Time values will not be displayed in the Trip test positions Reset the trip unit by depressing and releasing the Trip Reset pushbutton All LEDs turned on resulting fro...
Страница 12: ...econds with Flat Response i i i 0 1 0 2 0 3 0 4 0 5 I l l r Seconds with Flat Response c i i i I o r 0 3 0 5 Seconds with l2 t Response 0 1 0 3 0 5 r 1 Seconds with l2 t Response 11 l2t Response Retur...
Страница 13: ...ties are observed Polarity markings are shown on the rating plug when the hinged cover is open as indicated in Figs 5 2 and 5 3 Note The battery can be replaced at any time with the circuit breaker in...
Страница 14: ...and 9 2 SPB Master Connection Diagram using Digitrip RMS Trip Assemblies I S 15545 9 0 References 9 3 Digitrip RMS Trip Assemblies 9 1 Type DS Low Voltage Ac Power Circuit Breakers I B 33 790 1F Instr...
