GRV8 21~26 3 Phase Voltage Monitoring Relay-5

GRV8 21~26 3 Phase Voltage Monitoring Relay-1

GRV8 21~26 3 Phase Voltage Monitoring Relay-2

GRV8 21~26 3 Phase Voltage Monitoring Relay-3

GRV8 21~26 3 Phase Voltage Monitoring Relay-4

GRV8 21~26 3 Phase Voltage Monitoring Relay-6

GRV8 21~26 3 Phase Voltage Monitoring Relay

Engineered for precision, the GRV8-21-26 utilizes true RMS measurement to ensure accurate voltage readings across a frequency range of 45Hz to 65Hz, with an impressive measurement accuracy of less than 1%. Its compact and lightweight design (90 x 18 x 64mm, 68g-71g) allows for easy installation on a DIN rail.With adjustable voltage settings, LED status indicators, and compliance with EN/IEC 60947-5-1 standards, this 3 phase voltage monitoring relay ensures reliability and safety.making it ideal for applications such as moving equipment, agricultural machinery, and refrigerated trucks.

Operating Temperature: -20°C to +55°C
Storage Temperature: -35°C to +75°C
Protection Degree: IP40 (front panel), IP20 (terminals)
Dimensions: 90 x 18 x 64mm
Weight: 68g – 71g
Max. Cable Size: 1×2.5mm² or 2×1.5mm² (solid wire)
Tightening Torque: 0.4Nm

→ Download GRV8 21~26 3 Phase Voltage Monitoring Relay Catalog PDF

Category Monitoring Relay

Description

Product Highlight:

True RMS voltage measurement
Adjustable 8-level rated operating voltage via knob
Wide frequency range: 45Hz – 65Hz
High accuracy: <1%
LED status indicators
Compact and lightweight design
DIN rail mounting
CE marked and EN/IEC 60947-5-1 compliant

Model Table:

Function code	Over voltage	Under voltage	Asymmetry	OFF delay time	Phase sequence	Phase failure
GYPV-21					adjustable	available
GYPV-22	5%…25%,OFF	OFF,-25%…-5%		0.1s…30s	available	available
GYPV-23	5%…25%,OFF	OFF,-25%…-5%	8%	0.1s…30s	available	available
GYPV-24	5%…25%,OFF	OFF,-25%…-5%	5%…20%,OFF	2s	available	available
GYPV-25			5%…20%	0.1s…30s	available	available
GYPV-26	15%	-15%	8%	2s	available	available

Panel Diagram：

Function Diagram：

Wiring Diagram：

Dimension（mm）：

Model	3P3W	3P4W
Function	Monitoring 3-phase voltage
Monitoring terminials	L1-L2-L3	L1-L2-L3-N
Supply terminals	L1-L2
Voltage range	380-400-415-440-480 (P-P)	220-230-240-254-277 (P-N)
Rated supply frequency	45Hz-65Hz
Measuring range	260V-600V	150V-350V
Threshold adjustment voltage	5%-25%of Un selected or OFF
Asymmetry threshold	5%-20% or OFF
Hysteresis	2%
Phase failure value	70% of Un selected
OFF delay time	Adjustable 0.1s-30s,10%
Measurement error	≤1%
Delay at power up	0.5s
Knob setting accuracy	10% of scale value
Output indication	green LED
Fault indication	red LED
Reset time	1s
Output	2×SPDT
Current rating	8A/AC1
Switching voltage	250VAC/24VDC
Min.breaking capacity DC	500mW
Temperature coefficient	0.05%/℃,at=20℃(0.05%℉，at=68℉)
Mechanical life	1*10⁷
Electrical life(AC1)	1*10⁵