Water and wastewater industry
The demands from the water and wastewater industry are constantly increasing. Extensive monitoring of the lifting and conveyor systems is essential for process reliability. The KRIWAN protection relays for pumps support your plant system in the acquisition of operationally relevant data and their integration into the system controller.
The individual parameterization of the KRIWAN protection relays for pumps enables them to be used in various areas of application in the water and wastewater industry. The range of KRIWAN water relays can cover the various requirements for protection and monitoring technology for your pumps.
Take a look into the future of protection relays!
The need for accurate leakage monitoring in the water industry
Leaks in water systems can not only be costly, but can also have a serious environmental impact. At Kriwan, we understand the critical importance of effective water leakage monitoring in the water industry and offer customized solutions to detect and prevent potential damage at an early stage.
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Products, Water and wastewater industry
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Products, Water and wastewater industry
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Products, Water and wastewater industry
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Products, Water and wastewater industry
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Products, News, Water and wastewater industry
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Products, Water and wastewater industry
KRIWAN pump protection relays are crucial for the digitalization of pumps, enabling the unlocking of resulting opportunities and advantages. They are specifically designed for complex industrial applications. The operational data of the pump can be easily integrated.
Our solution: Smart protection relays for pumps
KRIWAN water relays provide a reliable and user-friendly solution for protecting and monitoring pumps, pump systems and submersible mixers in the water and wastewater industry. An internal memory records measured values and operating data of the pump. This data can be retrieved at any time on site via a digital interface using the INTspector app or worldwide by integrating them into the overall system controller.
Continuous monitoring
It is important for the operator that the pump runs smoothly. Damage and failures are avoided by providing information on the condition of the pump at an early stage and taking countermeasures.
Wastewater systems face particular challenges, as leaks can not only mean financial losses, but also have an environmental impact. This is precisely where our customized water leakage monitoring systems come in, enabling us to react to problems at an early stage and thus ensure the safety and efficiency of wastewater systems.
With KRIWAN's complete solution consisting of protection relays, Modbus gateway for networking and the INTspector app for parameterization, the condition of the pump is continuously monitored and automatically switched off before damage or failure occurs. This enables reliable and efficient system operation.
Why use a KRIWAN protection relay for pumps?
KRIWAN offers a complete solution from the protection relay, to the gateway for networking, to the INTspector app for parameterization: easy to implement, flexible and scalable, enabling you to perform condition monitoring for reliable and efficient system operation. This is the only way to increase the efficiency and service life of machines and systems.
Kriwan's pioneering technologies for precise leakage monitoring in the water and wastewater industry
Learn more about Kriwan's pioneering technologies for water leakage monitoring in the water and wastewater management. From smart sensors to real-time monitoring, we offer a wide range of innovative solutions that help minimize risk and maximize operational safety. Contact us for customized solutions to effectively protect your water system.
The right protection relay for every pump
To the product pages| Motor temperature The motor temperature is monitored with different sensors or a bimetal. | PTC, Pt100, Pt1000, bimetal, external relay contact | PTC, Pt100, Pt1000, bimetal, external relay contact | PTC, Pt100, Pt1000, bimetal, external relay contact | PTC, Pt100, Pt1000, bimetal | - |
| Temperature 1The temperature (e.g. bearing temperature) is monitored with different sensors. | PTC, Pt100, Pt1000 | PTC, Pt100, Pt1000 | PTC, Pt100, Pt1000 | PTC, Pt100, Pt1000, bimetal | PTC |
| Temperature 2The temperature (e.g. bearing temperature) is monitored with different sensors. | PTC, Pt100, Pt1000 | PTC, Pt100, Pt1000 | PTC, Pt100, Pt1000 | - | bimetal |
| Leakage 1 The leakage is monitored via the measured resistance. If the value falls below or exceeds a parameterized limit value, the pump is automatically switched off. | Conductance measurement | Conductance measurement | Conductance measurement | Conductance measurement | Conductance measurement |
| Switching input The switching input monitors a potential-free switching contact (NC contact, NO contact or reset). The main application is the monitoring of a float switch (normally closed contact). Alternatively, a reset button with a normally open contact can also be connected. | float switch, external reset | float switch, external reset | float switch, external reset | - | - |
| Analog input Any 4-20 mA signal from an external sensor can be read in via the analog input. If the value falls below or exceeds an adjustable switching point, the pump is automatically switched off. | 0/4 – 20 mA | 0/4 – 20 mA | - | - | - |
| Phase monitoring The phase monitoring includes the monitoring functions phase sequence, phase failure, phase asymmetry, overvoltage and undervoltage. | Phase failure, phase sequence, phase asymmetry, undervoltage and overvoltage, run detection | Phase failure, phase sequence, phase asymmetry, undervoltage and overvoltage, run detection | Phase failure, phase sequence, phase asymmetry, undervoltage and overvoltage, run detection | Run detection | Run detection |
| Measuring range Measuring range for phase monitoring or running detection. | Phase-phase: 3~ 20-100 Hz, 60-690 V | Phase-phase: 3~ 20-100 Hz, 60-690 V | Phase-phase: 3~ 20-100 Hz, 60-690 V | Phase-neutral conductor: 20-100 Hz~, 60-480 V | Phase-neutral conductor: 20-100 Hz~, 60-480 V |
| Current monitoring If a current transformer is connected, the current of phase L1 is monitored for overcurrent or undercurrent. When the set limits are reached, the relay 1 or relay 2 switches off. | Current transformer INT185 | - | - | - | - |
| Power measurement / -monitoringWith connected phase and current transformer, converted active, reactive and apparent power are displayed. The Cosφ monitoring can be set to exceed or falling below and the relay 1 or relay 2 switches off when the adjustable limits are reached. If a current transformer is connected, the active power is monitored for underload or overload and relay 1 or relay 2 switches off when the adjustable limits are reached. | Apparent, active and reactive power, Cosφ, Underload, Overload | - | - | - | - |
Relay 1 Relay 1 can be set to all recognizable faults or warnings. The monitoring of motor temperature, phase sequence, phase failure, phase asymmetry, undervoltage and overvoltage are always active for relay 1 and cannot be deselected for relay 1. | Alarm, Warning | Alarm, Warning | Alarm, Warning | Temperature | Temperature |
| Relay 2 Relay 2 can be set to all recognizable faults or warnings. | Alarm, Warning | Alarm, Warning | - | Leakage | Leakage |
| Interfaces The diagnostic port (DP) and Modbus RTU (RS485) are availiable as interfaces. The diagnostic port is used to output the diagnostic data and to parameterize the protection relay. The protection relay is integrated into the system control via the Modbus RTU interface. | Diagnostic port (DP) Modbus RTU (RS485) | Diagnostic port (DP) | Diagnostic port (DP) | Diagnostic port (DP) | Diagnostic port (DP) |
| Housing width | 45mm | 45mm | 45mm | 22.5mm | 22.5mm |
| Reset function The reset function is used to reset the interlocked shutdown or the restart delay. A reset can be carried out by means of mains reset, the reset button on the housing of the protection relay, an external reset or via a Modbus reset. | Mains reset / external reset / Modbus reset | Mains reset / external reset | Mains reset / external reset | Reset button/ external reset/ mains reset | Reset button/ external reset/ mains reset |
KRIWAN protection relays offer a reliable, user-friendly and digital solution for the protection and monitoring of pumps, pump systems and submersible motor agitators. An internal memory records measured values and operating data of the connected sensors. These can be called up via digital interface at any time on site with the KRIWAN INTspector app or worldwide through integration into the higher-level system control. The large number of inputs and outputs can be parameterized individually for each application. For example, the temperature inputs can be selected between PTC, Pt100, Pt1000 and bimetal. If an input is not used, it is deactivated by parameterization.
For the water and wastewater industry, KRIWAN offers the Premium, Extended, Standard, Basic and Basic Ex protection relays, each with 2 different power supplies (AC/DC 24V and AC 100-240V). The variants differ in terms of functionality (see product overview).
All KRIWAN pump protection relays are supplied with a factory setting. These can be found on the respective product page in the download area as a parameter list. The parameterization can be individually adapted to your application during installation and inspection with the help of the KRIWAN INTspector app.
You need a laptop, mobile phone or tablet (Windows 10, Android or iOS) with an installed KRIWAN INTspector app and a KRIWAN USB or Bluetooth gateway to establish the connection between the protection relay and the end device.
In the packaging is the respective protection relay and the brief instructions. With the products INT69 PYF Diagnose and INT69 EXF2 Diagnose, terminating resistors are also included in the scope of delivery.
For quick and easy status indication and troubleshooting, a flashing code is signalled via an LED on the front of the housing of the protective relays. This consists of a cyclic flashing sequence which can be taken from the data sheet. The KRWIAN INTspector app is available for a more detailed view. The diagnosis data provides an overview of the operating behaviour of your pump. Events, operating times, switching cycles and current measured values are displayed and help with detailed analysis on site.
The KRIWAN protection relays can be integrated into your control system via the ModBus RTU protocol. No additional hardware is required for the INT69® PYF PREMIUM, all other devices are connected via an INT600 DM gateway.
Sensors are usually already installed by the manufacturers of motors, pumps, systems, etc. The existing sensors can be connected to the KRIWAN pump protection relay.
We are happy to help you with questions. To do this, simply use the contact form on our homepage and send us a request. Our customer support will get in touch with you.
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