BBP - 3 Phase Supply Monitoring Relay

BBP - 3 Phase Supply Monitoring Relay

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Application: BBP range of supply monitoring relay offers all the features of its sister product, the BAP, plus even more features. 
Similarities include the monitoring an essential 3 phase supply for Under Voltage, Phase Imbalance and Phase Rotation and time delay.  
In addition the BBP range includes the accurate detection of over voltage with a factory setting of 112% of nominal supply voltage all within the same enclosure size as the BAP range.  

Description:  For the accurate detection of Symmetrical under-voltage and asymmetrical phae imbalance and phase rotation on a 3 phase AC supply coupled with the user friendly, calibrated, controls for the setting of both under-voltage and phase imbalance trip levels. 
Active Filters are included within the measuring circuits aimed at reducing the risk of errors or nuisance tripping caused by harmonics. true visible indication of the output status of the device is achieved by means of a dual colour LED.  

Alternative:  A. For a enclosed version see the BBE family.  


For the product to suit your application please see the selection chart below or contact sales:
Use Filter menus to browse products - 1 Filter(s) Set
ProdRefSupply VoltageU/V Trip LevelImbalance Trip LevelPhase RotationTrip Delay TimeopenTimer TypePower on Delay TimeRelay ContactsO/V Trip LevelEnclosure Typeenclosure type
BBP1203add to basket415Vac75%15%Yes0.5 secsFixed0.3 secs1 pole C/O112%1
BBP1403add to basket415Vac75%5-15%Yes0.5 secsFixed0.3 secs1 pole C/O112%1
BBP1503add to basket415Vac75-95%15%Yes0.5 secsFixed0.3 secs1 pole C/O112%1
BBP1603add to basket415Vac75%15%Yes0.5 secsFixed0.3 secs2 pole C/O112%1
BBP1703add to basket415Vac75%5-15%Yes0.5 secsFixed0.3 secs2 pole C/O112%1
BBP1803add to basket415Vac75-95%15%Yes0.5 secsFixed0.3 secs2 pole C/O112%1
BBP1903add to basket415Vac75-95%5-15%Yes0.5 secsFixed0.3 secs2 pole C/O112%1
BBP2703add to basket415Vac50-95%5-15%Yes0.5-30 secsTrue1.3 secs2 pole C/O112%2
BBP2903add to basket415Vac50-95%5-15%Yes0.5 secsFixed2-30 secs2 pole C/O112%2

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.