Mitsubishi Electronics FR-F700 instruction manual Standard Breaker, EMC Filter, On mA

Selection of rated sensitivity current of earth (ground) leakage breaker

When using the earth leakage circuit breaker with the inverter circuit, select its rated sensitivity current as follows, independently of the PWM carrier frequency:

⋅Breaker designed for harmonic and surge suppression

Rated sensitivity currentI ∆n ≥ 10 × (Ig1 + Ign + Igi + Ig2 + Igm)

⋅Standard breaker

Rated sensitivity currentI ∆n ≥ 10 × {Ig1 + Ign + Igi + 3 × (Ig2 + Igm)}

Ig1, Ig2	: Leakage currents in wire path during commercial power supply
	operation
Ign	: Leakage current of inverter input side noise filter
Igm	: Leakage current of motor during commercial power supply operation
Igi	: Inverter unit leakage current

(Note)1. Install the earth leakage breaker (ELB) on the input side of the inverter.

2.In the connection earthed-neutral system, the sensitivity current is purified against an earth (ground) fault in the inverter output side. Earthing (Grounding) must conform to the requirements of national and local safety regulations and electrical codes. (JIS, NEC section 250, IEC 536 class 1 and other applicable standards)

￿Selection example (in the case of the left figure)

	Breaker Designed for			Standard Breaker
	Harmonic and Surge
	Suppression
Leakage current	1		5m
Ig1 (mA)		× 66 ×			= 0.11
	3		1000m

	Features
Peripheral Devices	Why energy		savings?
Standard		Specifications

Example of leakage current per 1km during the commercial power supply operation when the CV cable is routed in metal conduit

(Three-phase three-wire delta connection 400V60Hz)

(mA)	100
currents	120
	8 0
	6 0
leakage	4 0
	2 0
		2 3.5	8	142238	80150
	0
	5.5		3060100

Power supply size (mm2)

Leakage current example of Three-phase induction motor during the commercial power supply operation

(Totally-enclosed fan-cooled type motor 400V60Hz)

(mA)	2. 0
	1. 0
currents
	0. 3
	0. 7
leakage	0. 5
	0. 2
		1.	5	3.		7	7.	5	15223755
	0. 1
	2. 2				5.5 1118. 53045

Motor capacity (kW)

Leakage current				0 (without noise filter)
Ign (mA)
Leakage current Igi				1 (Without EMC filter)
	Refer to the following table for the leakage current of the
(mA)
					inverter
Leakage current		1		× 66 ×		60m	= 1.32
Ig2(mA)	3					1000m
Motor leakage					0.36
current Igm (mA)
Total leakage			2.79				6.15
current (mA)
Rated sensitivity
current (mA)(≥ Ig ×			30				100
10)

Outline		Dimension		Drawings
Terminal Connection	Diagram		Terminal Specification		Explanation
	Operation		Panel

For " " connection, the amount of leakage current is 1/3

example

5.5mm2 ⋅ 5m		5.5mm2 ⋅ 60m
ELB	Noise
	filter		3φ
	Inverter	IM
			400V
			2.2kW
Ig1	Ign	Ig2	Igm
	Igi

￿Inverter leakage current (with and without EMC filter)

Input power conditions

(200V class : 220V/60Hz, 400V class : 440V/60Hz, power supply unbalance within 3%)

	Voltage	EMC Filter
	(V)	ON (mA)	OFF (mA)
Phase	200	22(1) *	1
grounding
	400	30	1
Earthed-neutral
system
	400	1	1

*For the 200V class 0.75K and 1.5K, the EMC filter is always valid. The leakage current is 1mA.

Parameter	List
Explanations of Parameters
Protective	Functions
Options
Instructions
Motor
Compatibility
Warranty
Inquiry

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