5

Isolation

Table 6. Isolation and safety-related specifications

Parameter

Symbol

Value

Unit

Conditions

Clearance

(Minimum External Air Gap)

CLR

4

mm

Measured from input terminals to output terminals, shortest

distance through air

Creepage (*)

(Minimum External Tracking)

CPG

4

mm

Measured from input terminals to output terminals, shortest

distance path along body

Comparative Tracking Index (Tracking

Resistance)

CTI

≥ 400

V

DIN IEC 112/VDE 0303 Part 1

Isolation Group

-

II

-

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

Table 7. Isolation characteristics

Parameter

Symbol

Test Conditions

Characteristic

Unit

Input to Output test voltage

In accordance with VDE 0884-17

VPR

Method a, Type test

2720

VPEAK

VPR = 2720 V, tm = 10 s

Partial discharge < 5 pC

Method b1, 100 % Production test

3200

VPEAK

VPR = 3200 V, tm = 1 s

Partial discharge < 5 pC

Transient Overvoltage

(Highest Allowable Overvoltage)

VIOTM

tini = 60 s, Type test

4800

VPEAK

Maximum Surge Test Voltage

VIOSM

Type test

4800

VPEAK

Isolation Resistance

RIO

VIO = 500 V; Type test

>109

Ω

Table 8. Isolation voltage

Parameter

Symbol

Characteristic

Unit

Isolation Withstand Voltage, 1min (Type test)

VISO

2828/4000

VRMS/VPEAK

Isolation Test Voltage, 1sec (100% production)

VISOtest

3394/4800

VRMS/VPEAK

STGAP2GSN

Isolation

DS14151 - Rev 1

page 7/20