Under Voltage Relay
SP-0 Mod D
The input consists of a star-connected three-phase transformer, followed by a rectifier bridge. R4 and V9 limit the voltage to approx. 27 V = to the other electronics. The relay K1 is controlled by the
comparator V17 which receives a reference from the voltage divider R12, R8.
The measuring voltage is taken from the voltage divider R5, R6. This is selected so that the comparator does not switch on the relay until the switch-on voltage is sufficiently high.
The relay drops off when the voltage after R4 has dropped to 5-6 Volts. R1, R2 and R3 are varistors, which come into operation at approx. 330/600 V~, for the 110/220 Volt version respectively.
Normal connection and voltage at all phases:
- Tightening approx. 40/75 V ~
- Dropout approx. 25/40 V ~
- for the 110/220 V ~ variants, measured at the input
Typical applications
Interlocking of switch controls in power and transformer stations. Voltage indication on lines / busbars.
Electrical specifications
- Input voltage 110 V or 220 V - 50/60 Hz
- Insulation tested 2.3 kV ~ between output and input
- Ambient temperature -20 ° to +60°C
Order information
| Art.nr. | Type | Assembly |
|---|---|---|
|
19-000-14 |
SP0 MOD.D 110V 50 / 60Hz |
DIN 35 |
|
19-000-89 |
P0 MOD.D 220V 50 / 60Hz |
DIN 35 |
DIN 35
For orders or additional inquiries, please email eldesign@online.no or call us at +47 913 32 599.