A product overview
DW16 air circuit breaker (hereinafter referred to as circuit breaker), mainly used in AC 50Hz, rated current 100A to 630A, rated working voltage distribution network 400V or 690V, used to distribute electric energy, protection circuit and power supply equipment overload, short circuit, under voltage. Also in the AC 50Hz, 380V network is used to protect the motor overload, undervoltage and short circuit. Under normal conditions can be taken as the line is not frequent changeovers and motor is not frequent starting purposes.
Circuit breaker rated current 160A to 630A can be used as the neutral point of transformer single-phase TN power distribution system directly grounded metal on earth fault protection.
This product complies with the GBI4048.2 "low voltage switchgear and control equipment of low voltage circuit breaker" IEC947-2 and JB8590.2 "DW16 series" standard.
Two: type definition and classification
The 1 type of circuit breaker and meaning
Classification of 2 circuit breaker
(1) by usage:
Distribution; motor protection; distribution and single phase earth protection.
(2) according to the drive device:
A direct drive lever drive; motor drive.
(3) press release type:
With the current release and shunt tripping device;
With the current release and under voltage release;
With the current release, shunt tripping device and under voltage release;
With over current tripping device, grounding release and under voltage release;
With over current tripping device, grounding release, shunt tripping device and under voltage release;
(4) according to the protection of species:
Short circuit instantaneous action;
Overload long delay and short circuit instantaneous action;
Overload long delay, instantaneous short circuit and single phase earthing instantaneous or delayed action.
(5) according to the grounding release type:
Electromagnetic (instantaneous); electronic (instantaneous or delayed action 0.4s)
Three: the main technical parameters
1 of the rated current (see Table 1)
Table 1
The 2 circuit breakers rated insulation voltage is 690V, rated voltage and rated short-circuit breaking capacity (see Table 2)
Table 2
Rated control supply voltage 3 attachment (Us) or rated working voltage (Ue)
Table 3
The 4 auxiliary contact vheating current is 6A, rated power is 300VA (AC) and 60W (DC). The auxiliary contact is usually three often three close (3a, 3b) or the open closed (5a, 5b) five to other combination, please specify when ordering. Auxiliary contact and RL6-25/6 fuse in series, can break the prospective short-circuit current 1000A.
Four: operation conditions
1 closed
Circuit breaker motor operated to ensure reliable closed between 85% ~ 110%Ue.
2 disconnect
(1) with shunt tripping device disconnect
Shunt release in 70% ~ 110%Us (grounding protection circuit breaker shunt tripping device Us for the exchange of 220V should be in the 70%x220V and 110%x220V) can ensure that the circuit breaker is disconnected.
(2) with the under voltage release disconnect
When the voltage dropped to 170%Ue to 35%Ue between the under voltage release should make the breaker. The power supply voltage is lower than 35%Ue, tripping device can prevent the circuit breaker is closed, when the supply voltage is equal to or larger than 85%Ue can ensure that the circuit breaker closure.
(3) overcurrent trip off in case of overload
Overload long delay release and the surrounding air temperature independent, the current setting value is in the range of 0.64In-1.0In, inverse time characteristic and action at all levels when power is shown in Table 4 and table 5 distribution with the return current is 0.9Ir, motor protection return current is 1.0Ir. (Table 4 for the power distribution circuit breaker for inverse time characteristic, table 5 for directly starting motor circuit breakers for inverse time characteristic)
Table 4
Table 5
(4) the DW16-630 universal instantaneous trip protection type circuit breaker short-circuit transient shedding, the current setting value shown in Table 6, the current setting value accuracy is 20%
Table 6
(5) the performance of grounding protection
A. circuit breaker rated current value of ground motion (I Δ n Δ n) I '0.3In (Electronic) or 0.5In (electromagneti
B. circuit breaker rated grounding not action current value (1An. ) I △ no △ n for 0.5I.
C. grounding protection breaking time
The circuit breaker in the Ian off time grounding transient protection is not greater than 0.1s, ground delay protection delay time is 0.4s, the delay accuracy of ± 20%.
D. three-phase unbalanced load does not lead to the current limit value false action (1Bm)
In the absence of any ground current situation, can flow only includes the main circuit breaker two poles (including a pole and through the detection of components of the N line) circuit that does not lead to maloperation of overcurrent limit value for 6In.
E. load balancing does not lead to the current limit value false action (1Bm) in the absence of any grounding current, circuit breaker three link load balance circuit, flow without causing circuit breaker misoperation current limits of charged magnetic grounding release is 3In; with electronic ground release for 6In.
Shanghai people intelligent electric appliance Limited company production of DW16 circuit breaker, quality first, price concessions.
Contact: Mr. Xu 15957738830 www.shrmhz.com
DW16 -200A – 4000A electromagnetic type manual
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