Thermal Overload Relay Setting

Some manufacturers have the 125 setting built in which means you must set the overload protection at the motor s nameplate current.

Thermal overload relay setting.

Thermal overload relay phase. We need to setting the value of overload relay properly depend on our application and motor full load ampere if we setting low from fla it can cause motor trip c0ntinues and process not running smoothly. Thermal overload relay setting 100 x6 6 amp. Selection of thermal overload.

Size and type of. Thermal overload relay setting 120 x4 4 amp. The overload relay itself will have markings to indicate which class it belongs to. 1 15 the set current for the overload relay can be raised by 15 compared to full load current or to the service factor amps sfa which is normally indicated on the nameplate.

Thermal overload relay setting 120 x full load current phase max. Thermal overload relay setting 70 x4 3 amp. The required overload protection setting for motors is 125 of their full load current according to the nec but make sure you read the overload relay instructions as well. These include class 10 20 and 30.

Hence overload must be chosen closer to the range of 8 6 14 7. Thermal overload relay setting 100 x full load current line. Thermal overload relay setting 70 x12 28 8 6a max. Overload relays and their heaters belong to one of three classes depending on the time it takes for them to respond to an overload in the motor.

Rentang trip current dalam persen tersebut saya ambil dari data overload mitsubishi jadi tidak ngarang ngarang. Ada yang membahas trip current 125 namun saya cari dipuil 2000 tidak ketemu sehingga saya ketemu dari mitsubishi. Thermal overload relay bekerja saat suhu pada dalam tor tersebut terpenuhi jadi tor ini terdapat sebuah settingan berapa maksimum amper untuk melakukan trip jika ampere tersebut sudah terpenuhi didalam tor tersebut ada sebuah bimetal element yang menjadi panas saat ampere beban sudah melebihi ampere settingan tor. Thermal overload relay setting 70 x full load current phase min.

If the motor is connected in star 440 v 60 hz the overload relay then has to be set to 3 1 a. Thermal overload relay setting 120 x full load current phase max. The current can be set between the upper and lower limits provided. However if motors are designed with a service factor which is then shown on the nameplate eg.

Overload relay is the one of important device for motor control it can prevent our motor from overheat or winding burning due overload of ampere. The class number indicates the response time in seconds. 2 thermal overload set incorrectly. Cara setting thermal overload relay identik dengan rumus diatas setting trip overload.