Smart Relays – Smarter Grids
SkyPower’s Relay Division offers a wide range of protective and monitoring relays designed for modern power systems. From DC under voltage relays to microcontroller-based supervision and flasher relays, each product ensures system safety, accurate fault indication, and operational efficiency. Our relays are equipped with advanced features like LED indicators, reset mechanisms, and customizable timing functions. Compact, reliable, and built to international standards, they are ideal for use in substations, control panels, and critical infrastructure. SkyPower’s relays help prevent damage, reduce downtime, and enhance network reliability.
DC Under Voltage Relay
This relay monitors the condition of DC voltage continuously and indicates a “drop in voltage” if the DC voltage level drops to 70% of the nominal value. It can be used to monitor the voltage level in systems that use batteries as backup source or in general, where ever the monitoring of DC voltage level is required. Under normal conditions the relays remain energized. This relay is equipped with 2 normally open and 2 normally close contacts and a flag indication in the form of LED.
DC Supervision Relay
This is a microcontroller-based relay which is used to continuously monitor auxiliary voltage/ DC supply by indicating hand reset mechanical flag & LED. If the DC voltage falls below 80% of nominal rated voltage, it is indicated as a fault. A Reset button is also provided to assure correction of fault before resetting this module. The function of reset button is further explained in flow diagram. The relay’s characteristics will not change by more than ±7.5 percent with change in ambient temperature of ±10˚C from the reference temperature, which is 25˚C.
Flasher Relay
Flasher Relay is a timer-based device to ON/OFF any load. It contains 1 normally open and 1 normally closed contact. When the supply is connected to Flasher Relay, it will start flashing and relay contacts will change continuously. The time period of flashing is user configurable which is around 200 ms to 8 sec approx. and even more as per requirements. International standard power supply is being used in this relay which is capable of withstanding voltage surges/spikes and dips.
Windows Annunciators
It’s a fully programmable annunciation module which allows end user to easily customize the module according to the requirement of the operation. This module offers multi-event annunciation in response to the input fault signals. Each event/fault has a dedicated display window with message written on it. To illuminate the display windows, super bright LEDs are used.
Earth Fault indicator Relay
SkyPower’s Earth Fault Indicator Relays are designed for accurate detection of ground faults in LV and MV distribution systems. With high sensitivity and optional remote signaling, these relays enable fast fault localization, improve safety, and reduce downtime. Compact and standards-compliant, they offer a reliable and cost-effective solution for fault monitoring in underground cables, overhead lines, and switchgear panels.
