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Pump Safety & Protection Recommendations

 

Δ Important Notice Δ

 

▪ All electrical appliances need protection system.

Failing to use protection system, not only can seriously harm the equipment, but can also invalidate every right to assistance under warranty.

▪ Protection Percentage of Protective systems

Built-in thermal protector is installed directly on single-phase pumps winding by the manufacturer and has only 50% protection depending on the power of the motor. For example an electric motor with a power of 0.37kw is protected up to 60% by using built-in thermal control protector.

Look at the following table.

Protection percentage of built-in thermal control protector for single-phase electric-motor 220 V
Power – KW 110V – 50/60 Hz 220V 50/60 Hz
0.25 60% 70%
0.37 50% 60%
0.75 30% 50%
1.1 25% 40%
1.5 15% 30%
2.2 5% 15%

 

Note

Some of the three-phase electric-pumps are equipped with thermal protection systems (Thermo guards) placed inside an external control panel on the circuit line. This protection system for all pumps with different powers can provide up to 75% complete protection.

All Pump Safety & Protection Recommendations

If the starting-up method is proportional to the power of the motor as well as the consumed current rate and regarding to the setting of the current rate of starter protector (Amax × 1.1 = As), all single / three phase pumps are protected up to 50% and 30% respectively.

It is the least protective device for a pump that can also be used as a power switch. All miniature switches operate like these starters The disadvantages of these starters are to fail to being protected against open phase, delay operation and unable to be connected to other external controllers.

Failing to use protection system, not only can seriously harm the equipment, but can also invalidate every right to assistance under warranty.

1- Thermal protection direct connection to power Electricity (Overload) outside and Inside assembly

Built-in thermal protector is installed directly on single-phase pumps winding by the manufacturer and has only 50% protection depending on the power of the motor. For example an electric motor with a power of 0.37kw is protected up to 60% by using built-in thermal control protector.

Advantages and disadvantages of overloads installed inside coils

User does not charge any additional fees at the time of purchase. All manufacturers use this system for maximum of 1.5 HP and some up to 2 HP. Protection of this system to prevent burning of the coil in normal working mode and according to the power of the electric motor can operate up to about 60%

This overload controls the system by measuring the temperature, so when your Pump find the problem, the temperature of the winding rises as the amperage consumption increases, and this overload cuts off the electricity by measuring the temperature, but after cooling and lowering the degree, automatically connects the electricity and pump will be turn on auto

Given that, the number of disconnection and connection times and the lifespan of each type of overload is determined by the manufacturer according to the Amper passing through it. And if your pump is stuck for any reason and can’t work, a lot of Ampers will pass through it. Especially in high power, for example, 1.5 HP or 2 HP at 110 V will be passing 30 to 40 Ampers, Too much amperage can cause severe sparks, and platinum may be welded together .If there is no other reliable protection system in the input power line, your pump will certainly burn out. For example, the life of a good overload in 6 A is about 10,000 times, but in 15 A it is 200 times and in 30 amps it is only 10 to 20 times.

Some of the three-phase electric-pumps are equipped with thermal protection systems (Thermo guards) placed inside an external control panel on the circuit line.

This protection system for all pumps with different powers can provide up to 75% complete protection.

The manufacture use two kind of thermal protector for three phases , 1- (on-off Contact ) 2- (resistance system ) 3- sencore


If the starting-up method is proportional to the power of the motor as well as the consumed current rate and regarding to the setting of the current rate of starter protector (Amax × 1.1 = As), all single / three phase pumps are protected up to 50% and 30% respectively. This starter using the mechanical bimetal , as a result of the overflow of the regulated current, its metal heats up and then cuts off the electricity :
Start and stop only manually When there is a problem and the power cut off and it will not turn on again Auto . If the power is cut off from the network, the pump will be turned on position and start by connecting to the network . :
Start and stop only manuly , can not add any sencore ,This system is not very protective in three phases, such as controlling the two-phase power grid And because it is delayed, the pump is usually ddaammaaggeedd aanndd tthheenn tthhee ppoowweerr iiss ccuutt ooffff This system for controlling three-phase pumps can only protect up to 30%

These control panels consist of power contactors, bimetal (thermal) protectors, phase controllers and start / stop current transducers.

In single phase model , it is turn On with Contactor and have Separate Bimetal overload controller , and have Start and Stop and Reset Bottom and it can be add terminal for Auto and Manual Start and Stop with Floater switch and Pressure switch ,and can be include with Run capacitor
In single phase it can be control with 70% protection

These panels can provide up to 50% complete protection due to the high quality of the electrical components and their ability of phase control with 70% protction

In Three phases model , it is turn On with Contactor and have Separate Bimetal overload controller , and have Start and Stop and Reset Bottom and it can be add terminal for Auto and Manual Start and Stop with Floater switch and Pressure switch,

In optional ESWE & ESWF Series Combination Starters Type E with ““


These starters operate based on the consumed current and depending on the setting of protective parameter cut off power immediately when the current is increased. It can provide up to 90% protection in single-phase motors, 80% in three-phase motors (if open phase control is used) and 50% ( if open phase control is not used ).These starters are unable to be connected to other external controllers.


Due to their quality and high accuracy in measuring electronics and the possibility of installing multiple external controllers, they can provide 80 to 100% protection. The benefits of these panels include initial accurate settings, easy to use, phase controlling, phase sequence controlling, electrical shock protection and the possibility of being connected to other external controllers such as mechanical floater, thermal systems, humid meter and more. These digital panels are manufactured in different models and types to meet consumer’s needs. Golpumpstechnology.com has provided a number of them that fully meet consumer needs.



These control panels are used for contactors and electrical appliances and feature a soft starter protection system. This protection system is almost as efficient as digital panels and is used to start up electromotor above 10HP. These types of controls can protect up to 80%.

Soft-starters are drives designed for the smooth acceleration and deceleration of three-phase induction motors by controlling the voltage applied to the motor.

Microprocessed and fully digital, the SSW06 line of soft-starters was developed with cutting-edge technology, ensuring the best performance in the start and stop of induction motors.

The line has an advanced operating interface that allows easy parameter setting, built-in Pump Control function, providing effective pump control, in addition to the torque control function, which allows accelerations and decelerations with linear speed ramps.

SSW06 can contel control Motor PTC thermistor input and can be add PT100 Controller Convertor in optional.

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