ADLER electric winches are equipped as standard with protection class IP 54 as per DIN 40050. They can be supplied, upon request, with the enhanced protection class IP 55, IP 56 or IP 65.

The motor protection switch represents the simplest and cheapest method of protecting the motor and should, without fail, be located upstream to the winch. We recommend a motor protection switch fitted to a rigid insulation housing protection class IP 55 with lockable, bi-metal and magnetic rapid tripping mechanism. The switch is approved as a main switch when used in this design. 

The following items can be included in the motor protection switch housing: E-Stop, signal lamps, current tripping devices or additional auxiliary switches.

A winch with the motor protection switch fitted to it is recommended when used on frequently changing locations. 

ADLER electric winches are equipped as standard with motors of insulation material class F. The brake motor caters for 100% humidity (tropicalised) and ambient temperatures of up to + 60° C. 

The thermal motor windings protection consists of thermal sensors wired “in series” and incorporated in the winding head of the stator. The thermal sensors open an electric circuit upon reaching a pre-set temperature. The sensors we use comply with international regulations, e.g. VDE 0631 for temperature limiters.  The switching temperature for motors with insulation material class F is 132° C. The permissible switching current at 250 V. 50 Hz is 2.5 A. The thermal motor windings protection feature protects the motors, for example, against overshooting the ED number or in the event of permanent overloading. The models WE 1 to WE 20 are equipped as standard with thermal motor windings protection. Enhanced protection is provided by the thermal temperature sensor. 

Thermistor based motor protection represents state-of-the-art technology and the most effective and reliable means of protection. The facility comprises the thermal temperature sensors and the control unit, which is absolutely necessary. The brake motors can be supplied, upon request, with triple thermistors. The thermal sensors used (PTC thermistors) have a nominal response temperature (NAT) of 130° C and a maximum resistance of 750 ohm at room temperature. We use a thermistor relay with automatic reset, self-monitoring and LED fault display. 

An electronic overload protection facility prevents overloading of the hoisting mechanism by immediately shutting off the winch. The motor power is permanently measured in the operating condition. In the event that overloading is incurred subsequent to a preset start bridgeover (approx. 0.8 seconds), the unit immediately shuts the winch off. Further hoisting of the load is only possible when the release is activated.  

If the winch is to be used outdoors and the climatic conditions cause condensation inside the winch, a brake motor with stationary heating facility is required. When manufacturing the stator, a heater band with a rating of 12.5 to 50 Watts – depending on the size of the windings – is incorporated in the windings head. The facility serves to protect both the stator and the brake against corrosion. 

The ADLER brake motors for the winches models WE 1 to WE 10 and WE 20, designs 50/4 and 6, are designed, in connection with their braking system, such that they automatically adapt to the new voltage when the operating voltage changes. A wide range of operating voltages in 3-phase current between 200 and 690 Volts 50/60 Hz is available. The operating and control voltages that can be supplied can be taken from the separate pricelist. The brake motor incorporated in the WE 20, designs 10/4 to 20/8, winch is equipped as standard with a disc brake for an input supply voltage of 400 Volts with SI half-cycle rectifier. The brake coil is rated for 168 V DC. If these motors are required for other operating voltages, then the brake must be equipped with an appropriate transformer rectifier. The coil for brakes with transformer rectifier is then designed for 24 Volt D/C operation. 

The standard version electric winches are fitted with reversing and main contactor. Reversing contactors are electro-magnetic switching units with the aid of which switch-on and switch-off or the changing of motor directions by means of command units is regulated. The all-pole switch-off main contactor is required to comply with the safety regulations. The control voltage for operating this reversing contactor is normally 230 V 50 Hz AC. In special cases, a safety low voltage of, for example, 115 V or 224 V can be supplied as a control voltage. This voltage is then produced by an additional control transformer. A control transformer is also necessary when on the normal operating voltage of 400 V AC only one mains or central point conductor is available. In the case, for example, of 500 V operating voltage, a control transformer of 500/230 V is also required. The winches can also be supplied without control upon request. All internal connections are then wired to the terminal board.