DEIF PSM-1 Monitoring and protection module

Specific Parameters

Brand DEIF (Denmark)

Product Series PSM Series Power Monitoring and Protection Modules

Product Type Low-Voltage Distribution System Monitoring and Protection Module

Model PSM-1

Monitored Parameters Phase voltage, line voltage, phase current, total current, active power, reactive power, apparent power, power factor, frequency, harmonic THD

Voltage Measurement Range 100V-480V AC (line voltage); 57.7V-277V AC (phase voltage)

Current Measurement Range 0-5A AC (direct input); 0-800A AC (with current transformer)

Frequency Measurement Range 45Hz-65Hz

Measurement Accuracy Voltage/Current: ±0.2% FS; Power: ±0.5% FS; Frequency: ±0.01Hz

Protection Functions Overload protection, overvoltage protection, undervoltage protection, overfrequency protection, underfrequency protection, short-circuit fault alarm

Protection Setting Range Overvoltage: 105%-120% Un; Undervoltage: 80%-95% Un; Overfrequency: 51Hz-63Hz; Underfrequency: 47Hz-49Hz

Communication Interface 1 RS-485 interface (supports Modbus RTU protocol)

Output Signals 3 relay outputs (normally open/normally closed optional, for protection actions or alarms), 2 analog outputs (4-20mA, configurable corresponding monitored parameters)

Operating Voltage 85V-265V AC/DC, wide voltage input

Operating Temperature Range -25℃ – 70℃

Storage Temperature Range -40℃ – 85℃

Relative Humidity 5% – 95% Non-condensing

Protection Level IP40 (front panel); IP20 (body)

Installation Method 35mm DIN rail mounting

Dimensions 108mm×72mm×120mm (L×W×D)

Weight Approximately 420g

Certification IEC 61010-1, IEC 61326-1, CE, UL Certification

Fault Recording Supports up to 500 fault event records with timestamp

Product Performance

Adopts high-precision 16-bit A/D conversion chip and advanced signal processing algorithm, with high measurement accuracy of core electrical parameters, ensuring the authenticity and reliability of monitored data

Integrates multiple power system protection functions, protection thresholds can be flexibly configured, which can quickly respond to abnormal working conditions such as overload and overvoltage, timely cut off fault circuits or issue alarms, and reduce the risk of equipment damage

Supports RS-485 Modbus RTU industrial communication protocol, can be seamlessly integrated into upper computer monitoring systems to realize remote transmission and centralized management of monitored data

Equipped with multiple relay outputs and analog outputs, which can directly link external actuators and provide standard signals for other monitoring equipment, with strong system expandability

Has fault event recording function with timestamp information, facilitating operation and maintenance personnel to trace the cause of faults and improve fault diagnosis efficiency

Wide-voltage working power supply design, adapting to power supply environments in different regions and scenarios, with strong versatility

Excellent electromagnetic compatibility and anti-interference ability, can operate stably in industrial strong electromagnetic interference environments, ensuring the continuity of monitoring and protection functions

Wide operating temperature range of -25℃ – 70℃, adapting to harsh industrial environments of high and low temperatures, meeting on-site installation needs in different regions

Standard DIN rail mounting design, compact structure, convenient installation and disassembly, reducing on-site construction and maintenance costs