Shiva Amvaj 3PH Ampere control relay
۳ PHASE CONTROL AMPERE RELAY
۳ Phase Control Ampere Relay is a convenient device to protect three-phase motors against increase, decrease and asymmetry of currents and current display.
- Capable of displaying and measuring current and protection to minimum, maximum and asymmetry of currents
- Equipped with
- ۳ adjustment bound for minimum, alarm and maximum current
- Delay time at the first start of heavy motors
- Inner alarm for warning when confronting error
- ۲ separate relays for ALARM and TRIP
- ۱۰ indicators to announce
- AC: grid’s electricity
- Alarm Relay: status of Alarm relay
- Trip Relay: status of Trip relay
- Delay Start: delay of first start(3-300sec)
- CT: display and adjustment of CT(5-1000A)
- Delay Off: delay of disconnection(2-60sec)
- Unbalance: currents asymmetry(10-100% CT)
- Max: maximum current(0.1A-120% CT)
- Alarm: current of Alarm(0-120% CT)
- Min: minimum current(0-120% CT)
(Indicators are blinking when parameters are being adjusted)
- Wire installation Instruction is available on device terminals
*The first start time is the time when current increase will not be considered after starting.
- Supply voltage/output RESET:180-250VAC/PH-N/50-60Hz
- Current measurement accuracy:0.5% ± ۱digit
- CT adjustment time and other parameters: 5 minutes from the time connecting power
- Efficiency at
- Temperature : -20ºC .. +65ºC
- Humidity: 70%
- Output: two 16A relays
By connecting input power to device, Alarm relay is positioned in disconnection mode and Trip relay in disconnection or connection mode according to adjustment status (table4) and normal operation starts based on table 1
Device adjustments are based on tables 2, 3, 4 and error messages on table 5.
Warning: each time after adjusting CT, currents value of Min, Max and Alarm must be adjusted again.
Table 1 Normal Operation
|No Current||Rotational movement ??||AC|
|current crossing of CTs at start time||Inverse counting of Delay Start accompanied with a bleep||AC
|current crossing of CTs||current||AC|
Warning: device adjustments (CT, status of Trip relay, device parameters) are possible just at the first 5 minutes of connecting power. After finishing this time you are provided to adjust device again by disconnecting and connecting input power of device.
Table 2 Display and Adjustment of CT
|key||Blinking indicator||indicator||Variation Range using ?? and ?? keys|
|??||Save CT adjusted accompanied with a bleep|
Table 3 Display and Adjustment of device parameters
|Adjustment key||Blinking indicator||Description/display||Variation range using ? and ? keys accompanied with a bleep|
|?||Delay Start||First Start Time||۳-۳۰۰ sec|
|?||Delay Off, Alarm||Delay-Off for Alarm relay||۲-۶۰ sec|
|?||Delay Off, Unbalance
|Delay-Off for Trip relay||۲-۶۰ sec|
|?||Save all information with displaying ?? and a bleep|
*minimum current bound depends on CT adjustment
Note1 : it is necessary to adjust CT first because after adjusting CT each time, maximum, alarm and minimum current values will be reset.
Note2 : note that when adjusting currents, maximum current value must be more than alarm current and alarm current more than minimum current. Otherwise in this step, adjustments will not be saved and ?? will be displayed and previous adjustments will be saved.
Note3 : if any values of alarm or minimum currents set to zero they will be disabled.
Note4 : if adjustment steps are done slowly with an interruption more than 10 seconds, device will exit adjustment mode.
Table 4 display and adjustment of Trip relay status
(changeable by ? and ? keys)
|?||?||Trip relay is disconnected Normally and will be connected when error occurs|
|?||Trip relay is connected Normally and will be disconnected when error occurs|
|?||Save status of selected relay|
Device Function when Error Occurs
Performance details are based on table 5 in this situation. When Alarm Relay indicator is turned on and off it expresses that Alarm relay gets connected and disconnected respectively and when Trip Relay indicator is turned on and off it shows that situation of Trip relay alters from connected to disconnected or from disconnected to connected position. (situation of Trip relay is adjustable based on table 4 normally)
Table 5 Error Messages
|Indicator ON||Error description||Before relay situation change||After relay situation change|
|Displaying accompanied with a bleep||Alarm relay indicator||Trip relay indicator||Display accompanied with an uninterrupted sound|
|Unbalance||Current asymmetry of phases||Countdown??
|–||ON||difference of phase currents at disconnection time-blinking|
|Min||Current is lower than Min value||Countdown??
|–||ON||Current at disconnection time-blinking|
|Alarm||Current is higher than Alarm value||Countdown??
|ON(if Alarm is activated)||–||Current of CTs
|Max||Current is higher than Max value||Countdown??
|ON(if Alarm is activated)||ON||Current at disconnection time-blinking|
|Max||Current is higher than 120%CT||Countdown??
|ON(if Alarm is activated)||ON||??|
Note5 : if current keeps its previous condition 5 minutes after Alarm relay connection, Alarm relay gets disconnected and Alarm Relay indicator will be turned off but Alarm indicator remains turned ON.
Note6 : after error correction by pressing RESET key on device(inner RESET) or connecting of phase voltage (PH) to RESET terminal (outer RESET) for minimum 1 second, device returns to its normal function and device indicator displays crossing current of CTs.
Installation Instruction For Three-Phase Motors
Installation Instruction For Single-Phase Motors