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MEG-1000

Page nº 9

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ALARM relay

While the insulating resistance is lower than the adjusted trip value the

ALARM relay keeps de-activated. If the resistance being measured is higher

than the adjusted trip value the relay is activated after a set time.

Delay only takes place in relay activation; thus, when the resistance lowers

under the relay trip value the relay is instantaneously de-activated.

ALARM (4) red led lit on means that the insulating resistance is lower than the

ALARM trip value.

In a chart:

Содержание M15051

Страница 1: ...INSULATION GUARD MEG 1000 Code M15051 INSTRUCTION MANUAL M98122001 20 19A c CIRCUTOR S A...

Страница 2: ...one instruction manual 1 2 Connection procedures For the safe use of MEG 1000 is basic that people who install or handle it follow the normal safety considerations and the diverse advises related in...

Страница 3: ...ectronic device that measures the insulating resistance between the ground and one phase of an insulated neutral network IT The insulating resistance value shows on a double scale galvanometer which t...

Страница 4: ...nstrument read the INSTALLATION and ADJUST chapters and choose the properly operation mode 3 INSTALLATION AND START UP The manual you hold in your hands contains information and warnings that the user...

Страница 5: ...ound voltage 600 Va c c Maximum permanent voltage between the measuring connection terminals E R 1000 Va c Connection terminals E R This value allows the instrument to be protected from a phase fall o...

Страница 6: ...uld be provided with an automatic switch or any equivalent element to disconnect the instrument from the power supply network The supply and measuring voltage circuits will be both connected through a...

Страница 7: ...MEG 1000 Page n 6 3 2 2 Wiring diagram...

Страница 8: ...shows the value of the insulating resistance 1 5 front plate leds M 2 and k 3 leds indicate the measuring scale ALARM 4 and NORMAL 5 leds indicate if the resistance is lower or higher than the adjust...

Страница 9: ...ue is referred to the M scale or to the k scale 4 1 OUTPUT RELAYS OPERATION AND INDICATORS Two output relays are available ALARM relay and NORMAL relay The trip value and the delay time can be adjuste...

Страница 10: ...ance being measured is higher than the adjusted trip value the relay is activated after a set time Delay only takes place in relay activation thus when the resistance lowers under the relay trip value...

Страница 11: ...alue through the indication needle on the scale In the adjustment mode the equipment has a safety temporisation After 10 seconds without pressing one of the push buttons the equipment automatically go...

Страница 12: ...g scale is the k scale The adjusting range is within 0 1 and 3 s NORMAL relay temporisation If the active measuring scale is the k scale each 100 k means a trip delay of 1 second If the active measuri...

Страница 13: ...nd Press MODE ADJUST OF THE ALARM RELAY DELAY TIME ALARM and TIME leds blink Adjust the value by means of and Press MODE ADJUST OF THE NORMAL RELAY TRIP VALUE NORMAL led blinks Adjust the value by mea...

Страница 14: ...nk simultaneously When the leds are off the equipment returns to working mode NOTICE When pressing the three push buttons do not press MODE button first otherwise the equipment will go to adjustment m...

Страница 15: ...the case 2 5 kV 50 Hz for 1 min Insulating resistance between the inputs the outputs and the power supply 1 G Insulating resistance between any connection terminal and the case 1 G Working conditions...

Страница 16: ...described at the previous chapters named INSTALLATION AND STARTUP and SPECIFICATIONS Note that with the instrument powered on the terminals could be dangerous to touching and cover opening actions or...

Страница 17: ...rument must be disconnected from any power supply source When any protection failure is suspected to exist the instrument must be immediately put out of service The instrument s design allow a quick r...