I. Overview
ZYDT31 low-voltage motor protector is suitable for AC380V and AC660V low-voltage systems. It adopts powerful 32-bit processor and advanced 24-bit A/D conversion technology. It integrates the functions of measurement, protection, control and network communication (telemetry, telecontrol and remote control), and can fully protect and control three-phase asynchronous motors.
Second, the technical indicators
Input voltage | Rated voltage: AC220V/380V Overload capacity: 1.2 times continuous operation |
CT module | The rated current of motor is ≤ 400A, and the suitable fixed current is ≤ 400A |
Measurement accuracy | Power level 1, other 0.5 levels |
Protection precision | Current not exceeding ± 5%, voltage not exceeding ± 2.5%, delay action not exceeding ± 40ms, event recording resolution: ≤ 10ms |
Input frequency | Input range: 45 ~ 65Hz Rated frequency: 50/60 Hz |
Relay contact capacity | 5A/250VAC 5A/30VDC |
Switch value input | Conventional AC220V external power supply (other requirements, please order instructions) photoelectric isolation |
4-20mA output | Programmable, DC24V internal power supply |
Auxiliary power supply | DC 110V ~ 340V or AC 85 ~ 264V power consumption < 3W |
Working environment | Working temperature:-25 ℃ ~ + 65 ℃, working relative humidity ≤ 90%, non-corrosive gas place |
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