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ISOLGUARD HIG93, HIG93/L, HIG94 

 

  V5.8/23 

HAKEL spol. s r.o. Hradec Králové                     

www.hakel.com

                                                               

Page 4 / 15 

2.  ISOLGUARD HIG93, HIG93/L, HIG94 technical characteristics  

Type 

 

HIG93 

HIG93/L 

HIG94 

Monitored IT power supply system type 

 

AC 

Maximum IT power supply system operating voltage 
(without external inductor) 

U

n

 

275 V

 

Nominal supply voltage 

U

s

 

230 V

 

Supply voltage range 

 

90 to 265 V

 (47 ÷ 63 Hz) or 90 to 370 V

 

Power consumption 

max. 5 VA 

Measuring circuit 

 

 

Measuring voltage 

U

M

 

12 V DC 

Measuring current 

I

M

 

< 0,6 mA 

Alternating internal resistance of the measuring input 

R

i

 

> 2 MΩ 

Displayed value's range 

R

isol

 

5 kΩ to 900 kΩ 

0,1 kΩ to 90 kΩ 

200 kΩ to 5 MΩ 

Measurement accuracy    5 kΩ      ...  10 kΩ  
                                       10 kΩ   ... 900 kΩ 

 

2 kΩ 

± 10 % 

 

 

Measurement accuracy   0,1 kΩ   ...  10 kΩ  
                                         10 kΩ    ... 90 kΩ 

 

 

0,2 kΩ 

± 10 % 

 

Measurement accuracy   200kΩ     …     1MΩ 
                                           1MΩ     …     5MΩ 

 

 

 

± 10 % 
± 15 % 

Critical insulation resistance 

Rcrit1, 

Rcrit2 

adjustable 

 5 kΩ to 300 kΩ 

adjustable 

0,1 kΩ to 90 kΩ 

adjustable 

 200 kΩ to 900 kΩ 

Monitored insulation resistance hysteresis 

R

hyst

 

adjustable 0 to +100 % R

crit

 

Delay in response of signalling 

t

ON

 

adjustable 0 to 60 sec 

Outputs 

 

 

Two signalling relays with switching contact  
electric strength to the internal circuits 
electric strength to the supply circuits 

 

250 V AC / 1 A 

3750 Vrms 
3750 Vrms 

Communication line: RS485 type MASTER-SLAVE, 
9600 Bd, even count parity  
Insulating strength to the internal circuits and to the 
network circuits 

 

 

Yes 

2500 Vrms 

 

Yes 

2500 Vrms  

 

Yes 

2500 Vrns 

General data 

 

 

Degree of protection according to IEC 60529 

 

front panel IP40 

covers except front panel IP20 

Weight 

160 g 

Housing material 

 

PA – UL 94 V0 

Method of assembly 

 

on 35 DIN rail 

Recommended section of the connected conductors 

1 mm

2

 

Article number 

 

70 915 

70 915/L 

70 917 

Table 2: HIG93, HIG93L, HIG94 technical characteristics, part 1 

Operating conditions

 

 

Operating temperature 
Storage temperature 
Shipping temperature 

-10 °C ~ +60 °C 
-25 °C ~ +70 °C 
-25 °C ~ +70 °C 

Altitude 

Up to 2000 m a.s.l. 

Protection class 

II according to IEC 61140:2016 

Electromagnetic compatibility 

IEC 61326-2-4:2012 

Overvoltage category 

III, according to IEC 60664-1:2007 

Pollution degree 

2, according to IEC 60664-1:2007 

Working position 

any 

Operation type 

permanent 

Table 3: HIG93, HIG93L, HIG94 technical characteristics, part 2 

Measuring principle  

DC voltage 12 V. Plus pole connected to a CENTRE terminal. 

Summary of Contents for ISOLGUARD HIG93

Page 1: ...LGUARD HIG93 HIG93 L HIG94 V5 8 23 HAKEL spol s r o Hradec Kr lov www hakel com Page 1 15 Insulation monitoring device ISOLGUARD HIG93 HIG93 L HIG94 Operating instructions Document s name DOK 70915 V5...

Page 2: ...ion 5 Picture 2 Connection of HIG93 94 device 7 Picture 3 Connection of HIG93 94 device 7 Picture 4 Displayed information 8 Picture 5 Insulation resistance fault evaluation 11 Picture 6 Insulation sta...

Page 3: ...1 1 Variants of devices ISOLGUARD HIG93 HIG93 L HIG94 Type Display Menu Signalling relay 1 Signalling relay 2 Range of displayed value Critical insulation resistance Communication bus bar MDS D connec...

Page 4: ...c Outputs Two signalling relays with switching contact electric strength to the internal circuits electric strength to the supply circuits 250 V AC 1 A 3750 Vrms 3750 Vrms Communication line RS485 typ...

Page 5: ...u is shown on the display When the insulation resistance Risol is viewed it activates the parameter setting menu Within the parameters setting menu the prolonged pressing of this push button terminate...

Page 6: ...connections of the insulation monitoring Device Terminals A B SH These terminals are intended for connection of galvanic isolated communication line ISOLGUARD RS485 Individual insulation monitoring de...

Page 7: ...FAULT2 FAULT1 S1 S2 S3 SH B A FAULT2 FAULT1 MENU 1 2 3 4 5 6 PE L1 L1 L2 PE L2 L3 N L3 TL400 L1 L2 L3 CENTRE Rtl ext TEST ALARM 2 ALARM 1 RS485 ISOLGUARD PE 4 Recommended connection of HIG93 HIG93 L...

Page 8: ...C SET Relay Logic ESC SET N C FAULT ESC SET Picture 4 Displayed information 5 Information on the display Operating principles The meaning of the push buttons in each menu is shown on the display Press...

Page 9: ...ation line is performed immediately after receiving the order and takes 5 seconds If the FAULT memory is set Mem FAULT menu the signal relay remains in a status of alarm indication even after the test...

Page 10: ...label as Rin Typical values for three phase HAKEL inductors are as follows TL400 4 5 k TL500 4 5 k TL600 4 5 k TL1600 12 5 k TL6003 19 6 k Exact values may be obtained by measuring the inductor s wind...

Page 11: ...LT2 is only terminated when the insulation resistance increases above the value Rcrit1 Rhyst or Rcrit2 Rhyst Signalling relay is released and FAULT1 FAULT2 signalling is terminated The following left...

Page 12: ...assigned by the MASTER station In practice the communication proceeds in such a way that the MASTER station sends requests subsequently to all connected units and the SLAVE stations response The acces...

Page 13: ...nt data determining the status of this measurement e g fault occurrence Parameter data are extended of priority character determining the importance of the set parameter This character divides paramet...

Page 14: ...20 20 20 Delay in response of signalling the fault Set tON tON 0 sec 0 sec 0 sec External inductor resistance Set TLext Rtl ext 0 k 0 k 0 k Delay in device test start by remote test button Set tTEST t...

Page 15: ...and service It is necessary to follow specified conditions for reliable operation do not expose the device to rough handling keep it clean and ensure maximum admissible temperature of the environment...

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