Phase-sequence Phase-loss Relay TVR-2000B


Industry Category: Electrical-Equipment-Supplies/Electronic-Instrument-Enclosures
Product Category:
Brand: chfnad
Spec: Tvr-2000b

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Product Details

3.1 Key Specifications/Special Features

Function Rated input voltage * Relay output Model
Phase sequence and 
phase loss monitoring
3-phase, 3-wire 220 to 440 VAC Relay:  1 NC,1 NO TVR-2000B
3-phase, 3-wire 380 to 660 VAC Relay:  1 NC,1 NO TVR-2000C

* The power supply voltage is the same as the rated input voltage.


Rated input voltage 3-phase, 200 to 440 VAC (3-wire)
Input load Approx. 2.6 VA
1 s±0.05 s
Phase loss 0.1 s max. 
(when the voltage changes rapidly from 100% to 0% of rated voltage)
Indicators  LED Normal: Green light; phase loss: Red light; Inverted: Yellow light
Output form Relay Output: SPDT contact 
Output relay ratings Rated load 
Resistive load 
5 A at 250 VAC 
5 A at 30 VDC 
Maximum switching capacity: 1,250 VA, 150 W 
Minimum load: 5 VDC, 10 mA (reference values) 
Mechanical life: 10 million operations min. 
Electrical life: 
5 A at 250 VAC or 30 VDC:50,000 operations 
3 A at 250 VAC/30 VDC:100,000 operations
Ambient operating 
-20 to 60°C (with no condensation or icing)
Storage temperature -25 to 65°C (with no condensation or icing)
Ambient operating 
25% to 85% RH (with no condensation)
Storage humidity 25% to 85% RH (with no condensation)
Altitude 2,000 m max.
Applicable wires Stranded wires, solid wires, or ferrules
Applicable wire size 0.25 to 1.5 mm2 (AWG24 to AWG16)
Wire insertion force 8 N max. for AWG20 wire
insertion force
15 N max.
Wire stripping length 8 mm
Ferrule length 8 mm
Current capacity 10 A (per pole)
Number of 
50 times
Weight Approx.55g
Mounting Mounts to DIN Track, or screw mounting
Dimensions 30 *60 *70 mm (W*D*H)


Input frequency 
50 to 60 Hz
Phase loss detection 
80%±10% of rated input Calculation Formula 
= 1 – ((Highest phase-to-phase voltage – Lowest phase-to-phase voltage)/ 
Average three-phase phase-to-phase voltage)
EN 60947-5-1 
Installation environment (pollution level 2, Overvoltage category III)
EMC EN 60947-5-1
Insulation resistance 20 MΩ min. 
Between external terminals and case 
Between input terminals and output terminals
Dielectric strength 2,000 VAC for one minute 
Between external terminals and case 
Between input terminals and output terminals
Impulse withstand 
6 kV (between live terminals and exposed, non-charged metal parts)
Vibration resistance Frequency: 10 to 55 Hz, 0.35-mm single amplitude 
10 sweeps of 5 min each in X,Y, and Z directions
Shock resistance 100 m/s2, 3 times each in 6 directions along 3 axes
Degree of protection Terminals: IP20

Industry Category Electrical-Equipment-Supplies/Electronic-Instrument-Enclosures
Product Category
Brand: chfnad
Spec: Tvr-2000b