Description. Here is a simple mains power failure alarm/detector circuit that produces an alarm whenever the mains supply fails. Lot of such circuits are available, but the peculiarity of this circuit is that it requires no back up power source like a battery to power the alarm when the main...
The warning and control device with a mains power supply is applicable to individual or confined to oil, water, fire, and/or intruder alarm systems etc. and has a battery powered mains failure detection and alarm section. The mains failure circuit is incorporated without use of an additional ...
Mains supply failure alarm circuit. Source:https://electronicsforu.com Relay RL1 energises to activate the piezo buzzer via its N/O contact for the time-out period of the monostable multivibrator (approximately 17 minutes). At the same time, the N/C contact removes the positive supply to res...
Or you can buy an extra AC power supply which will connectmainspower to micro USB. jabra.com jabra.com 或者另外购买一个交流电源,它可将主电源接到微型 USB。 jabra.cn jabra.cn [...] toilets, etc.) and fire safety requirements (in terms of theirautomatic/manual fire alarm system, sprinkler...
Real-time clock and time stamped alarm logging Phase sequence detection and reverse power protection Measurement of KW, KVA, KVAr, KWh and Power Factor Magnetic Pick-up input for RPM measurement Independent control of MCB and GCB from front panel Phase sequence and reverse power protection for the...
• Charge alternator failure alarm • Manual speed control (on compatible CAN engines) • Manual fuel pump control • Engine exerciser • “Protections disabled” feature • kW overload protection • Power monitoring (kW h, kV Ar, kV A h, kV Ar h) ...
Configurable power-up mode. Choose to power up the module in stop / manual / auto mode. MPU fail delay. If an MPU failure is detected the alarm can be delayed to allow for transient in the signal. Enhanced graphical user interface. ...
• Charge alternator failure alarm • Manual speed control (on compatible CAN engines) • Manual fuel pump control • Engine exerciser • "Protections disabled" feature • kW protection • Reverse power (kW) protection • LED and LCD alarm indication ...
Measurement of KW, KVA, KVAr, KWh and Power Factor Full digital calibration of all analog measuring inputs Automatic and Test operation modes Two LED displays for easy reading of measurements and paramters 20 different alarm indicators right on the front panel 3 phase Mains voltage and single ph...
User-Friendly Interface:Features a large back-lit LCD with clear icons for easy navigation and alarm indication. Compact Design:Boasting a compact size, the DSE4520 fits perfectly in a variety of genset setups without compromising functionality. ...