BMP - 3 Phase Supply Monitoring Relay

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Application. The BMP range of Supply Monitoring relay provides accurate detection of both under- voltage and over- voltage supply faults on a 3 phase supply.

Description. If you are looking for a wide scope of adjustment, to suit your particular application, this device should more than suffice.

Under voltage adjustment band covering a wide 25% in total for the under voltage trip levels.
Over voltage has separate relay contacts to monitor for over voltage, fully adjustable trip levels between 105% and 120% of the nominal supply voltage.
Trip delay time. Note: selected models have True Delay time.
Separate relay contacts to signal under and over-voltage faults on selected models.

Selection:

For the product to suit your application please see the selection chart below or contact sales:

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ProdRef	Supply Voltage	U/V Trip Level	Phase Rotation	Trip Delay Time	Timer Type	Relay Contacts	Separate UV	Enclosure Type	O/V Trip Level

BMP1903	415Vac	70-95%	Yes	0.5-30 secs	True	2 x 2 pole C/O		2	105-120%
BMP2003	415Vac	70-95%	No	0.5-30 secs	True	2 x 2 pole C/O		2	105-120%
BMP2103	415Vac	70-95%	No	0.5 secs	Fixed	2 pole C/O		2	105-120%
BMP2203	415Vac	70-95%	Yes	0.5 secs	Fixed	2 pole C/O		2	105-120%
BMP2303	415Vac	70-95%	Yes	0.5-30 secs	True	2 pole C/O		2	105-120%
BMP2403	415Vac	70-95%	No	0.5-30 secs	True	2 pole C/O		2	105-120%
BMP2503	415Vac	70-95%	Yes	0.5 secs	Fixed	2 x 2 pole C/O		2	105-120%
BMP2603	415Vac	70-95%	No	0.5 secs	Fixed	2 x 2 pole C/O		2	105-120%

Trip Delay Timer
Where fitted the ‘Trip Delay Timer’ will inhibit the output contacts from releasing immediately a fault is detected.
The trip delay time is adjustable up to either 10 or 30 seconds depending on the model and will be either a ‘Standard’ delay or a ‘True’ delay type.
The 'Standard' delay type will require around 50% nominal supply voltage to be maintained for its operation, in the case of a total loss of power the unit
will trip with a minimal delay of approximately 0.5 seconds. This type of timer will allow the unit to ride through a short term voltage dip but not a total
power loss.
The 'True' delay timer is not dependent on the supply voltage for its operation. The timing function will be available in the case of either a partial or total
supply failure. This type of timer will allow the unit to ride through either a short term voltage dip or a total loss of power lasting up to 30 seconds.

Power On Delay Timer
Where fitted, the ‘Power On Delay Timer’ will delay the output contacts from energising immediately the supply voltage is applied to the unit for a period
of up to 30 seconds.
The supply voltage will have to satisfy the conditions set by the supply monitoring relay for a healthy supply continuously for the ‘Power On Delay’ timing
period before the output contacts will energise.
If the unit detects a fault and releases the output contacts the supply voltage will once again have to satisfy the requirements of a healthy supply continuously
for the ‘Power On Delay’ timing period before the output contacts will re-energise.