Voltage relay SPW11M

for under-voltage or over-voltage detection and signaling of DC voltage levels in electric vehicles, smart grids, trams, battery systems, etc. It can also be used for dynamic load control according to set voltage levels. With an optional rectifier module, SPW11M can be used also in industrial applications to detect AC under-voltage or phase loss to protect motors or other equipment.

Applications

1. DC under-voltage detection and signalization
2. DC over-voltage detection and signalization
3. AC under-voltage detection and signalization*
4. AC over-voltage detection and signalization*
5. Phase loss detection*
* with an optional rectifier.

Phase loss detection*

Advantages

1. No auxiliary supply required with pre-resistor
2. Low-cost
3. High reliability
4. 35 mm DIN rail or panel mounted
5. Easy to set with 2 potentiometers
6. Protected from unauthorized manipulation
7. Accurate
8. Fire resistant materials
9. Almost maintenance free

Rated values

Rated voltage	up to 690 VAC or 750 V DC
Release voltage	setting range ca 350 – 855 V
Turn-on voltage	setting range ca 370 – 835 V
Hysteresis	20 – 37 V (settable)
Pre-resistor	required without auxiliary supply
Relay output	DPDT, DC-13, 24 V DC, 2 A (EN 60974-5-1)
Isolation	5 kV rms, 10 mm
Switching voltage uncertainty	± 2% as standard
Ambient temperature	-40°C to 40°C (standard range for operation)

Maintenance

The under-voltage relay does not need maintenance, the dust is to be removed annually.

Guarantee time

The product warranty covers manufacturing defects of the device for up to 2 years from the delivery date.

Types

Table 1: Standard types

Properties	SPW11M DC750-P	SPW11M DC600-P	SPW11M DC 115-P	SPW11M DC 24-P
35 mm DIN rail montage			*	*
Montage plate	*	*
External resistor	*	*
Without auxiliary supply	*	*	*	*

Fig. 3: External dimensions of SPW11M DC750-P

Parameter	Value	Unit	AC/DC
Rated voltage		V
Release voltage		V
Turn-on voltage		V
Auxiliary voltage		V
Relay outputs		#
* voltage		V
* current		A
Base plate

Notes: