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SE-E1 Compressor protector

Country/Region china
Company Shanghai Goldair Electric System Ltd
Categories Temperature Protector
Telephone 0086-21-67697100
ICP License Issued by the Chinese Ministry
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    SE-E1 Compressor protector

    SE-E1 Compressor protector

    BITZER Part-NOSupplyOrder No.

    34701701 AC 208-240V15%15G08 SEE 11

    34701710AC 115-230V -15…+10%15G08 SEE 12

    34701702AC 24V15%15G08 SEE 13

    Main data

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

    * Measuring ciucuit(Type: PTC):

    -Rtrip 11.40 K±20% /

    -Rreset 2.95 K±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

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    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(2.95K), 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.

    Wiring diagram

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