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ADE7978/ADE7933/ADE7932/ADE7923

Data Sheet

Rev. D | Page 16 of 125

Insulation and Safety Related Specifications

Table 8. Critical Safety Related Dimensions and Material Properties

Parameter

Symbol

Value

Unit

Test Conditions/Comments

Rated Dielectric Insulation Voltage

5000

V rms

1-minute duration

Minimum External Air Gap (Clearance)

L(I01)

8.3

Measured from input terminals to output terminals,

shortest distance through air along the PCB

mounting plane, as an aid to PCB layout

Minimum External Tracking (Creepage)

L(I02)

8.3

Measured from input terminals to output terminals,

shortest distance path along body

Minimum Internal Gap (Internal Clearance)

0.017 min

Insulation distance through insulation

Tracking Resistance (Comparative Tracking Index)

CTI

400

IEC 60112

Isolation Group

Material Group DIN VDE 0110, 1/89, Table 1

DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Insulation Characteristics

The ADE7933/ADE7932 are suitable for reinforced electrical isolation only within the safety limit data. Maintenance of the safety data is

ensured by the protective circuits.

Table 9.

Description

Test Conditions/Comments

Symbol

Characteristic

Unit

Installation Classification per DIN VDE 0110

For Rated Mains Voltage ≤ 150 V rms

I to IV

For Rated Mains Voltage ≤ 300 V rms

I to IV

For Rated Mains Voltage ≤ 400 V rms

I to III

Climatic Classification

40/085/21

Pollution Degree per DIN VDE 0110, Table 1

Maximum Working Insulation Voltage

IORM

846

V peak

Input-to-Output Test Voltage, Method b1

IORM × 1.875 = Vpd(m), 100% production test,

ini = tm = 1 sec, partial discharge < 5 pC

pd(m)

1592

V peak

Input-to-Output Test Voltage, Method a

pd(m)

After Environmental Tests Subgroup 1

IORM × 1.5 = Vpd(m), tini = 60 sec, tm = 10 sec, partial

discharge < 5 pC

1273

V peak

After Input and/or Safety Tests Subgroup 2

and Subgroup 3

IORM × 1.2 = Vpd(m), tini = 60 sec, tm = 10 sec, partial

discharge < 5 pC

1018

V peak

Highest Allowable Overvoltage

IOTM

6000

V peak

Surge Isolation Voltage

PEAK = 10 kV, 1.2 µs rise time, 50 µs, 50% fall time

IOSM

6250

V peak

Safety Limiting Values

Maximum value allowed in the event of a failure

(see Figure 10)

Maximum Junction Temperature

150

°C

Total Power Dissipation at 25°C

2.78

Insulation Resistance at T

IO = 500 V

>109

Ω

AMBIENT TEMPERATURE (°C)

3.5

3.0

2.5

2.0

1.5

1.0

0.5

100

150

200

Figure 10. Thermal Derating Curve, Dependence of Safety Limiting Values on Case Temperature, per DIN EN 60747-5-2

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