A range of Din rail mounted and surface mounted enclosures, voltage supply monitoring relays for particularly harsh industrial applications and electrically noisy environments.
Construction of most three phase units are based around an internally fitted transformer, not only does this transformer coupled with active filters facilitate a high degree of protection from harmonics and supply irregularities but also enables units to monitor Phase Imbalance and Asymmetry Control as all phases are referenced to the Star point.
These monitoring devices offer protection both from monitoring accuracy and product survival against the following supply phenomenon:-
Harmonic voltage distortion by large non-linear loads such as; soft starts under starting, large variable speed drives and a large number of computers. These effects are exaggerated under weak supply conditions. All product types except for products with prefix BDE are particularly suited for such conditions.
Notching (momentary supply loss / negative transient), caused by large thyristor controlled three phase rectifiers found in DC drives, current source inverters, again the effects are exaggerated under weak supply conditions. Product types with prefix BCE, BMP, BQE, BQP, BAE, BAP, BBP, BWP and BBE are particularly suited for such conditions.
Spikes, caused by switching transients and electrical storms disturbances, supplies in remote locations are particularly prone. Product types with prefix BCE, BMP, BQE and BQP are particularly suited for such conditions.
Single Phase units:
Nominal voltage: 240VAC L-N***
Voltage range: 170-265VAC
Adjustable U/V setpoint: 170-250VAC
Fixed units U/V setpoint: 170VAC
Repeat accuracy: < 1%
Three Phase units:
Nominal voltage: 415VAC L-L***
Voltage range: 300-460VAC
Adjustable U/V setpoint: 300-440VAC
Fixed units setpoint: 300VAC
Repeat accuracy: < 1%
Adj. 15% of nominal phase amplitude**
Fixed 15%, 25%, 35%, 40% of nominal phase amplitude**
Rating: See table
Isolation: 2KV for 1 min
Power consumption: < 12VA
Trip delay time: Adjustable 0.5 to 30 secs
Operating temp: -40°C to +65°C
CE marked: Yes
*Most units, please request individual data sheets for specific details, please call for assistance.
**Depending on exact model type, see ordering information and selection table.
***Other system voltages are available, please call for assistance
*True Delay Off
Special voltages and frequencies in many of the above products are available on request, please call for assistance.
Individual data sheets specifically on each of the above detailed variations are available, please call for assistance.
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