英威腾电子说明书平台

D.4.1 Power cables

Dimension the input power and motor cables according to local regulations.

1. The input power and the motor cables must be able to carry the corresponding load currents.

2. The cable must be rated for at least 70°C maximum permissible temperature of the conductor in continuous use.

3. The conductivity of the PE conductor must be equal to that of the phase conductor (same cross-sectional area).

4. For details about the EMC requirements, see Appendix B "Technical data".

To meet the EMC requirements stipulated in the CE standards, you must use symmetrical shielded cables as motor cables (as shown in the following figure).

Four-core cables can be used as input cables, but symmetrical shielded cables are recommended. Compared with four-core cables, symmetrical shielded cables can reduce electromagnetic radiation as well as the current and loss of the motor cables.

Note: If the conductivity of the shield layer of the motor cables cannot meet the requirements, separate PE conductors must be used.

To protect the conductors, the cross-sectional area of the shielded cables must be the same as that of the phase conductors if the cable and conductor are made of materials of the same type. This reduces grounding resistance, and thus improves impedance continuity.

To effectively restrict the emission and conduction of radio frequency (RF) interference, the conductivity of the shielded cable must at least be 1/10 of the conductivity of the phase conductor. This requirement can be well met by a copper or aluminum shield layer. The following figure shows the minimum requirement on motor cables of a VFD. The cable must consist of a layer of spiral-shaped copper strips. The denser the shield layer is, the more effectively the electromagnetic interference is restricted.

Figure D‑1 Cross-section of the cable

D.4.2 Control cables

All analog control cables and cables used for frequency input must be shielded cables. Analog signal cables need to be double-shielded twisted-pair cables (as shown in figure a). Use one separate shielded twisted pair for each signal. Do not use the same ground wire for different analog signals.

Figure D‑2 Configuration of the power cable

For low-voltage digital signals, double-shielded cables are recommended, but shielded or unshielded twisted pairs (as shown in figure b) also can be used. For frequency signals, however, only shielded cables can be used.

Relay cables need to be those with metal braided shield layers.

Keypads need to be connected by using network cables. In complicated electromagnetic environments, shielded network cables are recommended.

Note: Analog signals and digital signals cannot use the same cables, and their cables must be arranged separately.

Do not perform any voltage endurance or insulation resistance tests, such as high-voltage insulation tests or using a megameter to measure the insulation resistance, on the VFD or its components. Insulation and voltage endurance tests have been performed between the main circuit and chassis of each VFD before delivery. In addition, voltage limiting circuits that can automatically cut off the test voltage are configured inside the VFDs.

Note: Check the insulation conditions of the input power cable of a VFD according to the local regulations before connecting it.

D.4.2.1 The VFDs of AC 3PH 380 V (-15%)–440 V (+10%)

Model	Recommended cable size (mm²)		Connecting cable size (mm²)				Terminal screw	Tightening torque (Nm)
Model	RST UVW	PE	RST UVW	P1, (+)	PB (+), (-)	PE	Terminal screw	Tightening torque (Nm)
GD35-1R5G-4-C1/D1/H1	2.5	2.5	2.5–6	2.5–6	2.5–6	2.5–6	M4	1.2–1.5
GD35-2R2G-4-C1/D1/H1	2.5	2.5	2.5–6	2.5–6	2.5–6	2.5–6	M4	1.2–1.5
GD35-004G-4-C1/D1/H1/H2	2.5	2.5	2.5–6	2.5–6	2.5–6	2.5–6	M4	1.2–1.5
GD35-5R5G-4-C1/D1/H1/H2	2.5	2.5	2.5–6	4–6	4–6	2.5–6	M4	1.2–1.5
GD35-7R5G-4-C1/D1/H1/H2	4	4	4–16	4–16	4–16	4–16	M5	2–2.5
GD35-011G-4-C1/D1/H1/H2	6	6	6–16	6–16	6–16	6–16	M5	2–2.5
GD35-015G-4-C1/D1/H1/H2	10	10	10–25	10–25	10–25	6–25	M5	2–2.5
GD35-018G-4-C1/D1/H1/H2	16	16	16–25	16–25	16–25	10–25	M5	2–2.5
GD35-022G-4-C1/D1/H1/H2	16	16	16–25	16–25	16–25	10–25	M6	4–6
GD35-030G-4-C1/D1/H1/H2	25	16	16–25	16–25	16–25	16–25	M6	4–6
GD35-037G-4-C1/D1/H1	25	16	25–50	25–50	25–50	16–50	M8	9–11
GD35-045G-4-C1/D1/H1	35	16	25–50	25–50	25–50	16–50	M8	9–11
GD35-055G-4-C1/D1/H1	50	25	50–95	50–95	50–95	25–50	M8	9–11
GD35-075G-4-C1/D1/H1	70	35	70–95	70–95	70–95	35–50	M10	18–23
GD35-090G-4-C1/D1/H1	95	50	95–150	95–150	95–150	50–150	M10	18–23
GD35-110G-4-C1/D1/H1	120	70	95–300	95–300	95–300	70–240	M10	18–23
GD35-132G-4-C1/D1/H1	185	95	95–300	95–300	95–300	95–240	It is recommended to use wrench or sleeve because screw is used as terminal.
GD35-160G-4-C1/D1/H1	240	120	95–300	95–300	95–300	120–240
GD35-185G-4-C1/D1/H1	95*2P	95	95–150	70–150	70–150	35–95
GD35-200G-4-C1/D1/H1	95*2P	120	952P – 1502P	952P – 1502P	952P – 1502P	120–240
GD35-220G-4-C1/D1/H1	150*2P	150	952P –1502P	952P –1502P	952P –1502P	150–240
GD35-250G-4-C1/D1/H1	95*4P	95*2P	954P – 1504P	954P – 1504P	954P – 1504P	952P – 1502P
GD35-280G-4-C1/D1/H1	95*4P	95*2P	954P – 1504P	954P – 1504P	954P – 1504P	952P – 1502P
GD35-315G-4-C1/D1/H1	95*4P	95*4P	954P – 1504P	954P – 1504P	954P – 1504P	952P – 1502P

Note:

1. Cables of the sizes recommended for the main circuit can be used in scenarios where the ambient temperature is lower than 40°C, the wiring distance is shorter than 100 m, and the current is the rated current.

2. The terminals P1, (+), and (-) are used to connect to DC reactors and brake accessories.

D.4.2.2 The VFDs of AC 3PH 520 V (-15%)–690 V (+10%)

Model	Recommended cable size (mm²)			Connecting cable size (mm²)				Terminal screw	Tightening torque (Nm)
Model	RST UVW	PE	RST UVW		P1, (+)	PB (+), (-)	PE	Terminal screw	Tightening torque (Nm)
GD35-022G-6-C1/D1/H1	10	10	10–16		6–16	6–10	10–16	M8	9–11
GD35-030G-6-C1/D1/H1	10	10	10–16		6–16	6–10	10–16	M8	9–11
GD35-037G-6-C1/D1/H1	16	16	16–25		16–25	6–10	16–25	M8	9–11
GD35-045G-6-C1/D1/H1	16	16	16–25		16–35	16–25	16–25	M8	9–11
GD35-055G-6-C1/D1/H1	25	16	16–25		16–35	16–25	16–25	M10	18–23
GD35-075G-6-C1/D1/H1	35	16	35–50		25–50	25–50	16–50	M10	18–23
GD35-090G-6-C1/D1/H1	35	16	35–50		25–50	25–50	16–50	M10	18–23
GD35-110G-6-C1/D1/H1	50	25	50–95		50–95	25–95	25–95	M10	18–23
GD35-132G-6-C1/D1/H1	70	35	70–95		70–95	25–95	35–95	M10	18–23
GD35-160G-6-C1/D1/H1	95	50	95–150		95–150	25–150	50–150	It is recommended to use wrench or sleeve because screw is used as terminal.
GD35-185G-6-C1/D1/H1	95	50	95–150		95–150	25–150	50–150
GD35-200G-6-C1/D1/H1	120	70	120–300		120–300	35–300	70–240
GD35-220G-6-C1/D1/H1	185	95	120–300		120–300	35–300	95–240
GD35-250G-6-C1/D1/H1	185	95	185–300		185–300	35–300	95–240
GD35-280G-6-C1/D1/H1	240	120	240–300		240–300	70–300	120–240
GD35-315G-6-C1/D1/H1	95*2P	120	952P –1502P		952P –1502P	952P –1502P	120–300
GD35-350G-6-C1/D1/H1	95*2P	150	952P –1502P		952P –1502P	952P –1502P	150–300
GD35-400G-6-C1/D1/H1	150*2P	150	1502P –3002P		952P –1502P	952P –1502P	150–300
GD35-500G-6-C1/D1/H1	95*4P	95*2P	954P –1504P		954P –1504P	954P –1504P	952P –1502P
GD35-560G-6-C1/D1/H1	95*4P	95*4P	954P –1504P		954P –1504P	954P –1504P	954P –1504P
GD35-630G-6-C1/D1/H1	150*4P	150*2P	1504P –3004P		1504P –3004P	1504P –3004P	1504P –2404P

Note:

2. The terminals P1, (+), and (-) are used to connect to DC reactors and brake accessories.

D.4.3 Routing the cables

Motor cables must be arranged away from other cables. The motor cables of several VFDs can be arranged in parallel. It is recommended that you arrange the motor cables, input power cables, and control cables separately in different trays. The output dU/dt of the VFDs may increase electromagnetic interference on other cables. Do not arrange other cables and the motor cables in parallel.

If a control cable and power cable must cross each other, ensure that the angle between them is 90 degrees.

The cable trays must be connected properly and well grounded. Aluminum trays can implement local equipotential.

The following figure shows the cable arrangement distance requirements.

Figure D‑3 Wiring layout distances

D.4.4 Insulation checking

Check the motor and the insulation conditions of the motor cable before running the motor.

1. Ensure that the motor cable is connected to the motor, and then remove the motor cable from the U, V, and W output terminals of the VFD.

2. Use a megameter of 500 V DC to measure the insulation resistance between each phase conductor and the protection grounding conductor. For details about the insulation resistance of the motor, see the description provided by the manufacturer.

Note: The insulation resistance is reduced if it is damp inside the motor. If it may be damp, you need to dry the motor and then measure the insulation resistance again.