VOLTAGE INDICATOR TYPE SPA-EL panel-mounted
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VOLTAGE INDICATOR TYPE SPA-EL panel-mounted General Description The voltage indicator type SPA can be used in medium voltage networks with a rated voltage of 5 kV to 36 kV. The function of the device is a permanent indication of the voltage status of the monitored conductors. The indication of the voltage is done by a permanent blinking of one LED per phase. The connection between the sensors and the display unit is done by potential-free fibre optic cables. The sensors must be mounted on unscreened conductors. For the operation of the display device, an auxiliary power supply is required. figure 1 - Housing of indication unit If the voltage is present, one LED per conductor is blinking. If the voltage of a conductor drops, the respective LED stops blinking. Additionally the device is equipped with relays to remotely indicate the voltage status via change-over contacts. It is possible to select the characteristics of the relay contacts (factory pre-set). If the device is equipped with three relays the voltage status of each phase can be remotely indicated. If one or two relays are equipped the remote indication of the voltage status is bundled. It can be selected whether the relays operate if there is a voltage drop on one phase or if there is a voltage drop on all phases. Features and Options Power supply options: Remote indication options: a) External power supply of 12V DC - 110V DC b) External power supply of 230V AC a) One relay for indication of no voltage on all phases b) One relay for indication of no voltage on one phase c) Three relays for indication of no voltage for each phase possible on round and flat conductors External connectors Optical terminal: Connector 7 - 9: Connector 10 - 12: Connector 13 - 15: Connector 16 - 17: voltage sensors L1, L2 and L3 1 Relais: not connected 3 Relais: SCADA change-over contact L1 1 Relais: SCADA change-over contact L1, L2 and L3 3 Relais: SCADA change-over contact L2 1 Relais: not connected 3 Relais: SCADA change-over contact L3 External power supply 12V DC - 110V DV Or External power supply 230V AC ELEKTRO-MECHANIK EM GMBH Document Rev. 4 Ringstr. 4 - D-42553 Velbert / Germany Page 1

DATA SHEET Subject voltage ranges The presence of voltage on each conductor is indicated by a permanent blinking of the respective LED flashing frequency indication unit suitable for panel installation dimensions: indication unit protection class: indication unit protection class: sensors power supply a) External power supply of 12V DC - 110V DC or b) External power supply of 230V AC (Power supply should be independent of the monitored network.) SCADA contact 1 Relais: 1x change-over contact 3 Relais: 3x change-over contacts max. 230 V AC / max. 2 A / max. 30 W operation temperature range...

DATA SHEET 1:1 Indication unit type SPA-EL Elektro-Mechnlk GmbH 42553 Velbert Germany Erselzt durch/replaced by: XX XXXX XX Zeichnungsnummer/ drawing number: 351573 01 ELEKTRO-MECHANIK EM GMBH Document Rev. 4 Ringstr. 4 - D-42553 Velbert / Germany Page 3

ELEKTRO-MECHANIK EM GMBH Document Rev. 4 Ringstr. 4 - D-42553 Velbert / Germany Page 4