AIR CIRCUIT BREAKERS - Electrical and Electronics Division

TECHNICAL DATA
Type of Moving iron Moving coil Moving coil Moving Moving Moving Bimetal Bimetal
instrument for current for current with rectifier coil with built-in coil with built-in coil with built-in Ammeter Ammeter
and Voltage and voltage for current transducer transducer transducer with moving
measurement measurement and voltage for power for cos ∅ for frequency iron movement
measurement measurement measurement measurement
(EQ) (PQ) (VQ) (WQ) (CQ) (ZQ) (BiQ) (BiEQ)
�ormat 48 x 48 mm 48 x 48 mm 48 x 48 mm - - -
72 x 72 mm 72 x 72 mm 72 x 72 mm - - 72 x 72 mm
96 x 96 mm 96 x 96 mm 96 x 96 mm 96 x 96 mm -96 x 96 mm 96 x 96 mm 96 x 96 mm 96 x 96 mm
144 x 144 mm 144 x 144 mm 144 x 144 mm 144 x 144 mm 144 x 144 mm 144 x 144 mm
Quantity of Alternating Direct current Alternating Power for Power factor �requency Mean rms Mean rms
measurement current Direct voltage current all types for all types for all types value and value, max.
Alternating Alternating of network of single-phase of networks max value value &
voltage voltage and loading and 3-phase of current instantaneous
(3 wire) network rms value
(balanced load) of current
Depth behind 53 mm 53 mm 53 mm 105 mm 105 mm 53 mm 53 mm 53 mm
bezel 131 mm for
3 phase 4 wire
unbalanced
loads
Smallest 6V 15mV 6V Related Related Related 1A 1A
measuring 100mA 15µA 100µA to rated to rated to rated 8 minutes 8 minutes
range (25µA for Voltage Voltage Voltage or or
PQ 48) 57.7V & 57.7V & 57.7V 15 minutes 15 minutes
rated rated (minimum
current 1A current 1A value 45Hz)
Largest 750V, 100A 600V 600V Related Related Related 6A 6A
measuring (600V for 100A 100mA to rated to rated to rated 8 minutes 8 minutes
range EQ 48, (25A for Voltage Voltage Voltage or or
25A for PQ 48) 500V & 500V & 500V 15 minutes 15 minutes
EQ 48) rated rated (maximum
current 5A current 5A value 440Hz)
Proof 3kV a.c. 3kV a.c. 3kV a.c. 2kV a.c. 2kV a.c. 2kV a.c. 3kV a.c. 3kV a.c.
Voltage (2kV a.c. (2kV a.c. 2kV a.c.
for EQ 48) for PQ 48) for VQ 48
Case Dimensions and panel cutouts conform to IS:2419 (IEC 473, DIN 43700)
Case made of glass filled poly-carbonate, self-extinguishing and non-drip in accordance with UL 94 V-O.
Bezel size Slim-line bezel, Standard colour black, Optional colors other than black possible on request.
Bezel window Standard: sheet glass.
Optional : anti-glare sheet glass.
Installation Installation in switchboard panels, mosaic arrangement on equipment or machines of wall thickness
upto 40mm for in-line horizontal or vertical arrangement.
�ixing on Panel Swivel captive fastners which can be fixed at either of the two locations at 90° to each other.
Terminals Clamp strap with M 4 screw (permanently linked) in all meters except
M 6 bolt for EQ 40 A, 60 A and PQ 6 A to 60 A, M 8 bolt for EQ/PQ 100 A
Mounting position Normally scale vertical, other positions possible.
Enclosure code Case IP 52 except for Bimetal meters, for which the code is IP 40. Terminals IP 00 as per IEC 529-(DIN
40050). Better protection is possible with the use of different types of insulating covers.
Insulation group Insulation resistance more than 5 M at 500V as per IS: 9249 (part 1).
Environment Environment category II as per IS:1248
Operating temperature range -10°C to +55°C
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