Submersible pump protector Kelan KL-QW2 water leakage overtemperature protector oil chamber leakage overheating relay

尺寸：

48*48*120（mm）

Submersible pump protector Kelan water leakage over-temperature protector oil chamber leakage overheating relay 1. Performance characteristics
Series of submersible pump protectors (hereinafter referred to as protectors), suitable for the protection of submersible pump protectors r and submersible thrusters r and control. It can be applied to all submersible pump protectors of Nanjing Beite, Shanghai Chuanyuan, Lanshen Group, Yangzijiang Pump Industry, Nanjing Brooklyn or other similar products.
2. Principle
According to the structure and characteristics of the type protector working underwater for many years, it is necessary to add oil chamber leakage protection and motor over-temperature protection to the protection device of the type protector:
Oil chamber leakage protection: A moisture detection electrode is placed in the oil chamber of the submersible pump protector. If there is moisture in the oil chamber that exceeds the limit, the electrode will have a signal jump. The submersible pump protector can detect the change in this signal and stop. The submersible pump protector operates and indicates a fault.
Motor over-temperature protection: Install a ℃ C thermistor on each phase of the three-phase motor winding of the submersible pump protector. When the temperature of any phase winding rises to ℃, the resistance value
will jump. The submersible pump protector can detect the change of this signal, stop the operation of the submersible pump protector and indicate a fault.
Motor overload protection: In the three-phase motor operating circuit of the submersible pump protector, a thermal relay corresponding to the applied current is connected in series to each phase line. Once the current is too large, the thermal relay will jump in state, and the submersible pump protector can detect When this signal changes, the submersible pump protector stops running and indicates a fault.
Low water level protection: In the pool where the submersible pump protector works, a liquid level detector is used to detect the water level. However, when the water level is lower than the water level where the submersible pump protector works, the liquid level detector will jump and the submersible pump The protector can detect changes in this signal and stop the operation of the submersible pump protector and indicate low water level.
3. Main performance
Sensor power supply:
Sensor C power supply.
Power supply transformer isolation.
Signal input:
Over-temperature signal: Motor over-temperature protection.
Leakage signal: oil chamber leakage protection.
Input hysteresis control:.
Signal input: C switch signal input or resistance or current signal input.
Signal response speed:.
Signal output
:
Relay output contact capacity: /C or /C.
Over-temperature fault output: relay normally open and normally closed output switch in one group.
Leakage fault output: relay normally open, normally closed output group switching.


Protection Controller
Input voltage, rated power consumption is less than.
Ambient temperature: ℃～℃.
Ambient humidity: below (no condensation).
Dimensions, weight:.
Installation method: Guide rail installation.
Installation method: *Instrument installation.