Operations of the relay can be tested by means of a test, button which energies the output relays & LEDs after set time delay with the channels set to underover frequency operation. Access to the test push button requires removal of the front cover. This test facility should normally only be used with the relay trip circuits isolated, The relays are suitable for any application in industrial plants & to generators where definite time underover frequency protection is required.

A switch is provided to select either an independent made of operation of three or four channels or select the under/over frequency made of operation.

The test switch, tripping indications & reset button are provided on the front of Relay.

The relays are suitable for any application in industrial plants & to generators where definite time under/over frequency protection is required

Internal timers are provided for each operating circuits & separate aux. Relays ensure maximum flexibility of operation.

Internal event recording of last three event. The values of parameters at the moment of tripping are recorded on the display.

Two terminals are provided for the voltage input to the frequency sensing circuit the measurement of the frequency is digital for which only the zero crossing of the system voltage & not its amplitude are of consequence the relay is independent of the voltage fluctuations with a wide range. However the system voltage sink below a predetermined value in which the accurate measurement can no longer be expected the under voltage blocking circuit blocks all the outputs.

Operations of the relay can be tested by means of a test, button which energies the output relays & LEDs after set time delay with the channels set to under/over frequency operation. Access to the test push button requires removal of the front cover. This test facility should normally only be used with the relay trip circuits isolated

Features

• Low Burden
• Wide operating voltage range
• Wide frequency setting range 39. 00 to 70. 00 Hz
• Independently adjustable tripping stages.
• Consistent accuracy ( .03 Hz)
• Unaffected by voltage fluctuations
• Insensitive to harmonics & transient
• Built in timer(.1 to 99.9 Sec.)
• Built in event recorder for last three events.
• Under frequency & over frequency relay with 2 to 4 frequency stages.
• Adjustable under voltage blocking level.
• Field Adjustable relay rated frequency
• One operate time can give to each frequency stage.
• Protection stages can be separately blocked via internal blocking inputs.

We already have a wide network of Distributors & Dealers all over the country. They all have sufficient trained manpower with them which ensures best support to our customer. The process of appointing dealers distributors in unrepresented areas is on and continuous efforts are made to expand our base on this line.

Two terminals are provided for the voltage input to the frequency sensing circuit the measurement of the frequency is digital for which only the zero crossing of the system voltage & not its amplitude are of consequence the relay is independent of the voltage fluctuations with a wide range. However the system voltage sink below a predetermined value in which the accurate measurement can no longer be expected the under voltage blocking circuit blocks all the outputs.One operate time can give to each frequency stage.

Internal event recording of last three event. The values of parameters at the moment of tripping are recorded on the display.Internal timers are provided for each operating circuits & separate aux. Relays ensure maximum flexibility of operation.ARMO UFT relay is used to detect such condition & initiate load shedding to prevent complete system collapse.

Operations of the relay can be tested by means of a test, button which energies the output relays & LEDs after set time delay with the channels set to underover frequency operation. Access to the test push button requires removal of the front cover. This test facility should normally only be used with the relay trip circuits isolated, ARMO UFT frequency relays are used to monitor the frequency of an electrical system. Due to inadvertent splitting of inner connection in power system, isolated areas of the system may become deficient in the generation & frequency of the same may drop considerably giving rise to emergency conditions.

Operations of the relay can be tested by means of a test, button which energies the output relays & LEDs after set time delay with the channels set to underover frequency operation. Access to the test push button requires removal of the front cover. This test facility should normally only be used with the relay trip circuits isolated, The relays are suitable for any application in industrial plants & to generators where definite time underover frequency protection is required.

A switch is provided to select either an independent made of operation of three or four channels or select the under/over frequency made of operation.

The test switch, tripping indications & reset button are provided on the front of Relay.

The relays are suitable for any application in industrial plants & to generators where definite time under/over frequency protection is required

Internal timers are provided for each operating circuits & separate aux. Relays ensure maximum flexibility of operation.

Internal event recording of last three event. The values of parameters at the moment of tripping are recorded on the display.

Two terminals are provided for the voltage input to the frequency sensing circuit the measurement of the frequency is digital for which only the zero crossing of the system voltage & not its amplitude are of consequence the relay is independent of the voltage fluctuations with a wide range. However the system voltage sink below a predetermined value in which the accurate measurement can no longer be expected the under voltage blocking circuit blocks all the outputs.

Operations of the relay can be tested by means of a test, button which energies the output relays & LEDs after set time delay with the channels set to under/over frequency operation. Access to the test push button requires removal of the front cover. This test facility should normally only be used with the relay trip circuits isolated

Features

• Low Burden
• Wide operating voltage range
• Wide frequency setting range 39. 00 to 70. 00 Hz
• Independently adjustable tripping stages.
• Consistent accuracy ( .03 Hz)
• Unaffected by voltage fluctuations
• Insensitive to harmonics & transient
• Built in timer(.1 to 99.9 Sec.)
• Built in event recorder for last three events.
• Under frequency & over frequency relay with 2 to 4 frequency stages.
• Adjustable under voltage blocking level.
• Field Adjustable relay rated frequency
• One operate time can give to each frequency stage.
• Protection stages can be separately blocked via internal blocking inputs.

We already have a wide network of Distributors & Dealers all over the country. They all have sufficient trained manpower with them which ensures best support to our customer. The process of appointing dealers distributors in unrepresented areas is on and continuous efforts are made to expand our base on this line.

Two terminals are provided for the voltage input to the frequency sensing circuit the measurement of the frequency is digital for which only the zero crossing of the system voltage & not its amplitude are of consequence the relay is independent of the voltage fluctuations with a wide range. However the system voltage sink below a predetermined value in which the accurate measurement can no longer be expected the under voltage blocking circuit blocks all the outputs.One operate time can give to each frequency stage.

Internal event recording of last three event. The values of parameters at the moment of tripping are recorded on the display.Internal timers are provided for each operating circuits & separate aux. Relays ensure maximum flexibility of operation.ARMO UFT relay is used to detect such condition & initiate load shedding to prevent complete system collapse.

Operations of the relay can be tested by means of a test, button which energies the output relays & LEDs after set time delay with the channels set to underover frequency operation. Access to the test push button requires removal of the front cover. This test facility should normally only be used with the relay trip circuits isolated, ARMO UFT frequency relays are used to monitor the frequency of an electrical system. Due to inadvertent splitting of inner connection in power system, isolated areas of the system may become deficient in the generation & frequency of the same may drop considerably giving rise to emergency conditions.