Toshiba GRD150, Manual

GRD150

8

TECHNICAL DATA 

Ratings 

AC current In 

1A or 5A 

AC voltage Vn: 

100V to 120V 

Frequency: 

50Hz or 60Hz 

DC auxiliary supply: 

110/125Vdc (Operative range: 88 – 150Vdc), 
220/250Vdc (Operative range: 176 – 300Vdc), 
48/54/60Vdc, (Operative range: 38.4 – 72Vdc) 

Superimposed AC ripple on DC supply: 

≤

 12% 

DC supply interruption: 

≤

 50ms at 110V 

Binary input circuit DC voltage: 

110/125Vdc, 
220/250Vdc, 
48/54/60Vdc 

Overload Ratings 

AC current inputs: 

3 times rated current continuous 
100 times rated current for 1 second 

AC voltage inputs: 

2 times rated voltage continuous 

Burden 

AC phase current inputs: 

≤

 0.1VA (1A rating) 

≤

 0.3VA (5A rating) 

AC earth current inputs: 

≤

 0.3VA (1A rating) 

≤

 0.4VA (5A rating) 

AC sensitive earth inputs: 

≤

 0.3VA (1A rating) 

≤

 0.4VA (5A rating) 

AC voltage inputs: 

≤

 0.1VA (at rated voltage) 

DC power supply: 

≤

 15W (quiescent) 

≤

 20W (maximum) 

Binary input circuit: 

≤

 0.5W per input at 110Vdc 

Protection Functions 

Current Transformer Requirements 

Phase Inputs 

Typically 5P20 with rated burden according to load, (refer to 
manual for detailed instructions). 

Standard Earth Inputs: 

Core balance CT or residual connection of phase CTs. 

Sensitive Earth Inputs: 

Core balance CT. 

Non-directional Phase Overcurrent Protection

OC 1

st

 Overcurrent threshold: 

OFF, 0.04 – 5.00A in 0.01A steps (1A rating) 
OFF, 0.2 – 25.0A in 0.1A steps (5A rating) 

OC 2

nd

 Overcurrent threshold: 

OFF, 0.10 – 50.00A in 0.01A steps (1A rating) 
OFF, 0.5 – 250.0A in 0.1A steps (5A rating) 

Delay type: 

DTL, IEC NI, IEC VI, IEC EI, UK LTI, IEEE MI, 
IEEE VI, IEEE EI, US CO8 I, US CO2 STI, User SI 

IDMTL Time Multiplier Setting TMS: 

0.010 – 1.500 in 0.001 steps 

DTL delay: 

Inst, 0.01 – 300.00s in 0.01s steps 

Reset Type: 

Definite Time or Dependent Time. 

Reset Definite Delay: 

Instantaneous, 0.1 – 300.0s in 0.1s steps 

Reset Time Multiplier Setting RTMS: 

0.010 – 1.500 in 0.001 steps 

OC 3

rd

, 4

th

 Overcurrent thresholds: 

OFF, 0.10 – 50.00A in 0.01A steps (1A rating) 
OFF, 0.5 – 250.0A in 0.1A steps (5A rating) 

DTL delay: 

Inst, 0.01 – 300.00s in 0.01s steps