Sepam series 20 Sepam series 40 - POWERLAB

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Connection diagrams Sepam series 40 voltage inputs DE51050 The phase and residual voltage transformer secondary circuits are connected directly to the connector marked E . The 3 impedance matching and isolation transformers are integrated in the Sepam series 40 base unit. Variant 1: measurement of 3 phase-to-neutral voltages (standard connection) Phase voltage sensor parameter setting Residual voltage sensor parameter setting Voltages measured Values calculated 3V 3V sum V1, V2, V3 U21, U32, U13, V0, Vd, Vi, f Measurements unavailable Protection functions unavailable (according to type of Sepam) None None DE51006 Variant 2: measurement of 2 phase-to-phase voltages and residual voltage Phase voltage sensor parameter setting Residual voltage sensor parameter setting Voltages measured Values calculated Measurements unavailable Protection functions unavailable (according to type of Sepam) U21, U32 External VT U21, U32, V0 U13, V1, V2, V3, Vd, Vi, f None None MT10994 Variant 3: measurement of 2 phase-to-phase voltages Phase voltage sensor parameter setting Residual voltage sensor parameter setting Voltages measured Values calculated Measurements unavailable Protection functions unavailable (according to type of Sepam) U21, U32 None U21, U32 U13, Vd, Vi, f V1, V2, V3, V0 67N/67NC, 59N MT11011 Variant 4: measurement of 1 phase-to-phase voltage and residual voltage Phase voltage sensor parameter setting Residual voltage sensor parameter setting Voltages measured Values calculated Measurements unavailable Protection functions unavailable (according to type of Sepam) U21 External VT U21, V0 f U32, U13, V1, V2, V3, Vd, Vi 67, 47, 27D, 32P, 32Q/40, 27S MT11016 Variant 5: measurement of 1 phase-to-phase voltage Phase voltage sensor parameter setting Residual voltage sensor parameter setting Voltages measured Values calculated Measurements unavailable Protection functions unavailable (according to type of Sepam) U21 None U21 f U32, U13, V1, V2, V3, V0, Vd, Vi 67, 47, 27D, 32P, 32Q/40, 67N/67NC, 59N, 27S 23
Control and monitoring Description Sepam performs the basic control and monitoring functions necessary for the operation of the electrical network, thereby reducing the need for auxiliary relays. The control and monitoring functions may be parameterized using the SFT2841 software tool, however each type of Sepam has parameter setting by default which allows easier commissioning in the most frequent applications. ANSI 94/69 - Circuit breaker/contactor control Sepam is used to control breaking devices equipped with different types of closing and tripping coils: b circuit breakers with shunt trip or undervoltage trip units b latching contactors with shunt trip units. The breaking device control function processes all the circuit breaker closing and tripping conditions based on: b breaking device status information b remote control orders b protection functions b program logic specific to each application (e.g. recloser). This function also inhibits breaking device closing according to the operating conditions. With Sepam series 20, it is necessary to use an MES114 module in order to have all the required logic inputs. Switching of groups of settings Used to switch from one group of phase overcurrent and earth fault protection settings to another group of settings. Switching may be performed by a logic input or via the communication link. Inhibition of thermal protection Thermal protection tripping may be inhibited via a logic input. Re-acceleration Allows a logic input to take into account the restarting of an unstopped motor. ANSI 68 - Logic discrimination (SSL) This function allows quick, selective tripping of the definite time or IDMT phase overcurrent and earth fault protection relays, without requiring the use of time intervals between upstream and downstream protection devices. The downstream relay transmits a blocking input signal if the protection device set points are exceeded. The upstream relay receives the blocking input signal on the logic input used for the inhibition function. A saving mechanism ensures the operation of the protection in the event of an inhibition link failure. ANSI 86 - Latching / acknowledgment Output relay latching may be parameterized. Latched tripping orders are stored and must be acknowledged in order for the device to be put back into service. The user acknowledges via the keypad or remotely via a logic input or the communication link. Latching is stored in the event of a power outage. Trip circuit supervision Detects trip circuit faults (shunt trip units). Detects open/closed position discrepancy faults (undervoltage trip units). Watchdog Indicates Sepam unavailability via output O4. Output relay test This function is used to activate each output relay. 24
Page 1 and 2: Electrical network protection Sepam
Page 3 and 4: Presentation More solutions MT11017
Page 5 and 6: Presentation More solutions More mo
Page 7 and 8: Presentation User-machine interface
Page 9 and 10: Selection table Sepam series 20 Fun
Page 11 and 12: Metering Description Metering funct
Page 13 and 14: Protection Description Current prot
Page 15 and 16: Protection Description Voltage prot
Page 17 and 18: Protection Setting ranges Functions
Page 19 and 20: Connection diagrams Sepam series 20
Page 21 and 22: Connection diagrams Phase current i
Page 23: Connection diagrams Sepam series 20
Page 27 and 28: Control and monitoring Logic input
Page 29 and 30: Control and monitoring Annunciation
Page 31 and 32: Communication Description and chara
Page 33 and 34: Optional remote modules Description
Page 35 and 36: Sensors LPCT type current sensors M
Page 37 and 38: Characteristics Size and weight Bas
Page 39 and 40: Characteristics Electrical characte
Page 42 and 43: Order form Breakdown of base units
Page 44 and 45: Order form Order form Sepam series
Page 46: Schneider Electric Industries SAS P

Sepam series 20 Sepam series 40 - POWERLAB

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