Kriwan Protection Module SE-E1 115-230V 50/60HZ, 347017-10 for Bitzer compressor

SE-E1 Compressor protector

    Part-NO               Supply                    

    34701701       AC 208-240V  ±15%          

    34701710       AC 115-230V  -15…+10%

    34701702       AC 24V  ±15%

Main data:

* Ambient temperature range：-30...+70℃

* Measuring ciucuit(Type: PTC):   

  -Rtrip  11.40 KΩ±20% /

  -Rreset  2.95 KΩ±20%

* Output relay: 1SPDT

* Phase monitoring: active about 1s after motor start for about 10 seconds

* Motor voltage: 3 AC 50-60Hz 200-632V ±10%

* Dimensions: 68.4*33*80(L*W*H,in mm)

* weight: approx. 200g

Compact, lightweight, and easy to install.

The compressor protection module is specifically designed to ensure the safe of the compressor.

It can prevent damage to the equipment caused by issues such as overcurrent, overvoltage, undervoltage, and phase loss, thereby extending the service life of the compressor.

Application:

Monitoring of motor temperature, phase sequence and phase failure of motors in refrigerant compressors.

Functional description

After the supply voltage has been connected, a three-second initialisation period follows. Provided the PTC chain resistance is below the reset threshold(2.95KΩ), the relay trips after these 3 seconds have expired.

The SE-E1 can monitor up to nine PTC thermistors even with differing rated shut-off temperatures. If one or more PTC thermistors become highly resistive, the motor protector switches off. After cooling down below the reset threshold, a 5-minute delay period begins. When this period has expired, the relay trips again, provided all PTCs are below the reset threshold. If a second PTC error is detected within 24 hours of the first, the delay period is 60 minutes. If a third PTC error occurs within the 24-hour period, the relay switches off and locks.

The monitoring of the three-phase motor voltage becomes active 1 second after the motor has started, for a time window of 10 seconds. In case of a wrong phase sequence or a phase failure, the relay switches off and locks.

After the motor is shut off, the phase monitoring is inactive for 20 seconds to avoid an unintended shut off by a motor that possibly may be rotating in reverse.

The lock-out and delay can be removed by a mains reset(>5s).

The sensor and supply circuits are galvanically isolated from each other.

The relay output is designed as a potential-free change-over contact in closed-circuit principle.

The SE-E1 is not suitable for use with frequency converters.