Toshiba VF-nC1 instruction manual VFNC1S

E6581090

■Calorific values of the inverter and the required ventilation

1

The energy loss when the inverter converts power from AC to DC and then back to AC is about 5-10 percent. In order to suppress the rise in temperature inside the cabinet when this loss becomes heat loss, the interior of the cabinet must be ventilated and cooled.

				Calorific	Amount of	Heat
	Operating			Values (W)	forcible air	discharge
Voltage Class	motor	Inverter Type		Carrier	cooling	surface area
	capacity				ventilation	required for
				frequency
	(kW)				required	sealed storage
				12kHz
					(m3/min)	cabinet (m2)
Single-Phase	0.1		1001P	12	0.07	0.24
	0.2	VFNC1S-	1002P	21	0.12	0.42
100V Class	0.4		1004P	30	0.17	0.6
	0.75		1007P	55	0.31	1.1
	0.2		2002P(L)	21	0.12	0.42
Single-Phase	0.4		2004P(L)	30	0.17	0.6
	0.75	VFNC1S- 2007P(L)		55	0.31	1.1
200V Class
	1.5		2015P(L)	96	0.55	1.9
	2.2		2022P(L)	126	0.72	2.5
	0.1		2001P	12	0.07	0.24
	0.2		2002P	21	0.12	0.42
Three-Phase	0.4	VFNC1-	2004P	30	0.17	0.6
200V Class	0.75		2007P	55	0.31	1.1
	1.5		2015P	96	0.55	1.9
	2.2		2022P	126	0.72	2.5

Notes

1)The heat loss for the optional external devices (input reactor, DC reactor, radio noise reduction filters, etc.) is not included in the calorific values in the table.

2)Case of 100% Load Continuation operation.

■Panel designing taking into consideration the effects of noise.

The inverter generates high frequency noise. When designing the control panel setup, consideration must be given to that noise. Examples of measures are given below.

•Wire so that the main circuit wires and the control circuit wires are separated. Do not place them in the same conduit, do not run them parallel, and do not bundle them.

•Provide shielding and twisted wire for control circuit wiring.

•Separate the input (power) and output (motor) wires of the main circuit. Do not place them in the same conduit, do not run them parallel, and do not bundle them.

•Ground the inverter ground terminals ().

•Install surge suppressor on any magnetic contactor and relay coils used around the inverter.

•Install noise filters if necessary.

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