UMP-U Type

Download Add Inquiry

Model UMP Power factor, designed of a balance type with universal & flexible application feature, can be applied to measure single phase 2 wires, 3 phase 3 wires & 3 phase 4 wires only under the specified terminal connection. The unit accepts ac voltage & current inputs with detection of phase relation between the measured phase voltage & phase current of power factor COSφ for UMP.
The designed specifications compliant ANSI, DIN & VDE standards with full protection for unusual surge intrusion and input over assuring reliable operation.

Features

True power system design complaints ANSI-IEEE, IEC & VDE standards
High over capability to assure reliable operation
High accuracy 0.5%
Display with super rate LED

Accuracy (23±3℃) : 0.5%fs + 0.2° > 20% input current, 0.5%fs + 0.4° > 10% input current
Stability : Temperature coefficient < 50 ppm per degree c, long term draft < 0.2% per year
Display & resolution : 0.56” super rate LED, 0.0001-1.0000 for PF
Response time : Sample rate 1 of per sec. typically
Input over :
- Current input : 3 x rating - continuous, 10 x rating - 30 sec., 25 x rating - 3 sec.
- Voltage input : maximum continuous 750V or 1.5 rating which ever great
Frequency : 40-70 Hz
Dielectric strength : 2.5 kVrms / 1 minute input / power / case
Surge test : ANSI C37.90/1989, IEC 255-3 (1989)
Impulse test : Voltage 1.2 x 50us 4kV, oscillation wave 0.5us-100kHz 3kV or 1MHz-0.25 ms 2.5kV
Temperature condition :
- Operatingrange -10 to 55℃, 0-99% RH non-condensed,
- Storage -25 to 70℃
Auxiliary power AC/DC version < 3.5VA, DC option 24V ±20% < 5 watts